This page contains references that need to be verified and added to timeline table. Remember to check for duplicates and format references appropriately. Also check and remove all overlinks.
Do not add references based on gameplay year math (i.e. adding/subtracting number of years mentioned from game chronological start date. The timeline is for specific dates mentioned only.
- August 16: Doctor Morrison Rand was abducted by aliens on-board Mothership Zeta when he was leaving the campus of Banfield College in Humboldt.
- April 2: The City of Watoga, West Virginia, is founded.
- June 25: Robert House founds RobCo Industries.
- America begins suffering from an energy crisis, prompting companies like REPCONN Aerospace to begin development of new fuel sources.
- July: The Linden Street slayings by the Pint-Sized Slasher take place.
- July 26: The United Nations disbands.
- Wan Yang is arrested as a suspect in the Niagara Sabotage.
- May: Construction of Vault 92 begins.
- May, 3rd: A U.F.O. codenamed "Paladine" crashes just north of Hagerstown, Maryland, but could not be recovered.
- May: Construction of Vault 87 begins.
- June 24: Negotiations between the U.S. and other world powers come to a dramatic end, with the president walking out of oil talks with the other world powers. After a heated debate, the president stormed out of the meeting and declared that the last known supply of petroleum will be used exclusively by the U.S. and the U.S. will not sell or trade any oil to outside parties.
- Fusion cell is invented.
- May: Construction of Vault 92 ends.
- Summer: Penelope Hornwright undertakes an intership in the Operations Department of Hornwright Industrial.
- November: Construction of Vault 112 begins.
- February 11: Federal Bureau of Investigation orders all Patriot's Cookbook magazines banned and incinerated.
- Summer: Penelope Hornwright undertakes an internship in the Automation Department of Atomic Mining Services.
- October: Construction of Vault 76 ends.
- December: Construction of Vault 106 and Vault 108 ends. Vault 108 was in construction for 8 years due to work stoppage.
- Penelope Hornwright graduates summa cum laude from Vault-Tec University, with a double major in Business Administration and Geological Science.
- The United States Space Administration launches the Deep Sleep mission, meant to test hibernation pods in outer space with a five-year (and possible extension to ten-years) hibernation of the mission's crew. The crew consists of Commander Sofia Daguerre, Doctor Carol Bernard, Doctor Lee, Engineer Nowak, and assaultron PANDORA.
- West Tek Research Facility is put under military command.
- December: Construction of Vault 87 ends.
- Teddy Fear line of teddy bear recalled, due to being too terrifying for children.
- Legislative Act 21-0 is passed by the United States Congress.
- Camp McClintock is founded in West Virginia by the United States Army.
- June: The United States Army confirms the development of a "Super Weapon" to liberate Anchorage, Alaska.
- June: Ezra Parker prevents the assassination of Viscount Sergey Urbonas by diving between him and the shooter, ultimately being saved by a silver locket kept in his breast pocket.
- July: A group of soldiers stationed at Vault 79 desert after stealing at least 20 million dollars, fleeing south to Las Vegas to gamble with the money.
- July 11: The government catches up with the deserters at the Ultra-Luxe casino, killing them all in a dramatic shootout.
- July 12: The sole survivor of the deserters, Sergeant Kathryn Montgomery, is found hiding at the Lucky 38 with the money stolen by the group. She escapes the city heading east, and officials report she is a Chinese spy called "Shanghai Sally."
- July 15: Montgomery is identified by a Red Rocket attendant in Galveston and attempts to flee out into the Gulf of Mexico aboard a stolen speedboat, but is killed when the boat is fired upon by the USS Wade.
- Cambridge Polymer Labs, LLC is established by Jon Elwood, Ericka Elwood-Woolum, and Wilfred Bergman.
- June: Construction of Vault 112 ends.
- RobCo Industries brings up plans to purchase REPCONN Aerospace, threatening a hostile takeover otherwise.
- Ezra Parker is selected by Modern Industrialist to be in the "Top Ten Up and Coming Venture Capital Managers."
- January 14: A Bureau of Alcohol, Drugs, Tobacco, Firearms and Lasers operation under the leadership of Agent Curtis Wilson bust a firearms smuggling ring that had been supplying illegal arms across the United States.
- February 15: After an argument through email with General C. Braxton, CEO of Dyer Chemical Stanley Dyer acquiesces control of his company's production line to the United States Army for Project Clean & Clear.
- February 14: The Anaheim Jets win Super Bowl CXII; 95-90.
- March: Huntersville receives a rural development grant.
- May 27: The Whitespring Resort announces The Whitespring 2080 Initiative, a major five-year renovation to the resort.
- June: General Brock becomes the commanding officer of Fort Strong.
- August: The United States Space Administration awards contracts to ArcJet Systems to develop the XMB booster engine and deep range transmitter for their Mars Shot Project, a manned mission to Mars.
- August 20: West Tek Research Center constructed north of Huntersville to experiment with the use of FEV-modified crops in agriculture.
- December 20: West Tek ramps up agricultural mutation research at Huntersville.
- REPCONN Aerospace is bought out by RobCo Industries.
- The Concord, Massachusetts, Red Rocket truck stop wins the 2076 Trashbusters Award.
- January 24: James Oberlin arrives at ATLAS Observatory to replace the previous military liaison in weather control experiments.
- February: The M42 "Fat Man" Launcher begins development at Fort Strong.
- February 16: After shuttering their agricultural research, West Tek starts human FEV mutation experiments at Huntersville.
- March 12: ATLAS tests in Appalachia yield first results.
- June: T-51 power armor development completes and overseas units are successful.
- July 4: Vault 76 is completed for the United States' tricentennial.
- August 20: ATLAS manages to create a wide variety of weather, warranting further investment of public funds.
- August 25: Evelyn Hornwright's funeral takes place in Charleston, after she loses her long battle with cancer.
- September 8: First super mutants emerge at Huntersville.
- October 20: Nuka-Cola Quantum is created.
- November 26: A hearing to the Senate by the Committee of Nuclear Energy is held on Thanksgiving to discuss the prospect of mining the largest uranium deposit in the United States recently discovered on the East Coast. Senator Clark argues for the mining of the uranium, but Senator Sam Blackwell is quick to point out Senator Clark's conflict of interest as he had purchased a large stake in Atomic Mining Services.
- December 10: Shelby O'Rourke meets with Ray Gary and Scott Conroy at a Truth Seekers meeting, as part of her cryptid research.
- The United States Army commissions General Atomics International to manufacture the Mister Gutsy line of combat robots. The Mister Gutsy line is completed just before the Great War and are released for use.
- May–August: Camp McClintock begins its automation process beginning in May and is completed in August.
- January 11: Alaska is reclaimed, and the Anchorage Front Line is again held by the Americans.
- January 28: At 4:32 PM, an All Clear is sounded at Anchorage and DEFCON is lowered to 3.
- February 16: The testing of the Archimedes I weapons system is successful. However, despite precautions being taken, several minor systems are overloaded.
- February 22: The Army takes control of the HELIOS One installation in Nevada from Poseidon holdings. Full use of the laser artillery enters the American arsenal.
- April: A United States Navy destroyer is sunk. One of the few survivors, a Marine named Thomas Davis, eventually makes his way home to Bar Harbor, Maine, where his fellow members of Beaver Creek Lanes gather to welcome him home.
- April 2: John-Caleb Bradberton undergoes the LEAP-X Program procedure, preserving his head in a jar beneath his office at Nuka-World.
- April 28: A major Class 1 nuclear incident occurs at Nuka-World's power plant, causing a large amount of radioactive coolant to discharge into the local river.
- May 2: Quinton Geesey publishes an opinion editorial praising the full automation of Grafton Dam and urges Grafton citizens to cease protesting the widespread automation of their jobs.
- June 14: The Berkeley Springs Police Department defused a bomb that was planted by "The Appalachian Assassin."
- June 25: The Mistress of Mystery Season 8 Episode 16 is recorded in Los Angeles.
- June 26: The after-party for the eighth season of the Mistress of Mystery is held in Los Angeles, attended by the staff and actors.
- June 26: The installation of Cryptos and the Hall of Trials into Riverside Manor is completed. Frederick Rivers and Zack Hayes run tests on the system's functionality. Recording of Mistress of Mystery Season 8 wraps up in Los Angeles.
- June 29: Frederick Rivers unveils the Order of Mysteries's Lair to his wife, Shannon Rivers, along with three months of training for her upcoming television performance on The Silver Shroud.
- July 4: After contact with the contaminated lake water causes a medical crisis at a General Atomics-sponsored bass fishing tournament, Lake Quannapowitt is closed to the public.
- August 17: The ATLAS Program receives full funding as its clandestine weather modification technology proves successful (a full whiteout snowstorm in mid-fall).
- August 27: Miners strike outside Garrahan Estate, protesting their working conditions. Bill Garrahan exacerbates the situation by firing a shotgun into the air, scaring off the protesters.
- September: The M42 "Fat Man" Launcher is perfected and shipped out out Fort Strong to "the supply yard in Mississippi."
- September: Free States leaders Raleigh Clay and Sam Blackwell retreat to their bunkers in the Mire after seceding from the United States of America.
- September 27: The Bysshe Company build a secret lab in the basement of Van Lowe Taxidermy overnight for Calvin van Lowe to conduct his "Sheepsquatch" research out of. The construction noise is reported to the Lewisburg Police Department, who sent van Lowe an official letter of warning.
- September 28: An attempted robbery of New Appalachia Bank at the New Appalachian Central Trainyard goes horribly wrong, resulting in an explosion which collapses the bank building and kills many bank employees and bystanders, as well as two of the three robbers themselves.
- September 29: Martin Reid begins uncovering that not all is right with his employers, spotting several odd shipments to the Vaults under their regional purview; the first of these are fifteen cases of Psycho and Jet sent to Vault 95.
- October: An explosion in Kerwood Mine kills 17 miners and traps 32 more.
- October: Nuka-Cola Quantum is released to the public.
- October: The Whitespring cancels the Springhill golf tournament.
- October: The Nuka-Cola Corporation becomes the first "business class" sponsor of the Whitespring.
- October 2: A non-depleted Ultracite vein in Atomic Mining Services' Mine Shaft No. 9 bursts into Welch. Word spreads about the discovery. Penelope Hornwright and Gregory reach Welch after AMS, who have already claimed the town and are evicting its residents.
- October 3: Automation riots begin. Faced with forced relocation, the residents of Welch rebel against AMS. The rioting spreads to anything related to the local mining companies after years of maltreatment. News of the town's rebellion spread across Appalachia, and disenfranchised mine workers across the region begin to occupy company properties across the region. With the rebellion and property damage rising, Governor Evans calls in the National Guard and the local mining companies call in "independent contractors" to restore order.
- October 3: Hornwright Industrial closes their headquarters amidst the violent rioting, to be reopened on October 5. They also make a statement declaring that they would not be responsible should an employee be injured crossing the picket lines.
- October 3: Bryce Garrahan proactively calls Governor Evans for assistance with the violent riots outside his home, hoping to keep his sociopath brother from exercising his own brand of justice with the weapon he has purchased and been brandishing for that purpose.
- October 4: Hornwright Industrial manages to secure all its property from the rioters except the Rockhound, the rioters retreating. The executives of the company are forced to meet that day to make sure AMS is held liable for the "tens of millions" in damages.
- October 5: The rioters who destroyed the Mega Mansion in Bramwell are arrested, and Bryce Garrahan officially requests permission to negotiate with a small contingent of more peaceful miners.
- October 5: Yvette Wiesman, a coworker of Penelope Hornwright, leaves a message at the reception desk of Hornwright Industrial Headquarters, asking how she and her father are doing, and about the riots at the Rockhound and Welch.
- October 7: Walter Scott opens a shipment marked "Vault 111 - DO NOT OPEN." To his and Martin Reid's perplexment, it contains hundreds of gallons of liquid nitrogen, something that the Vault would not normally need, and more evidence that Mr. Reid's theory was correct.
- October 12: The National Guard arrive at Mount Blair to clear the remaining rioters from the Rockhound with minimal damage to the machine.
- October 15: Walter Scott warns Martin Reid about Frank Davidson's violent temper.
- October 15: The Whitespring officially terminates all non-"Ironclad Service" contracted employees; essentially all non-management personnel are fired to finish the transition period for automating the facility. An "Employee Farewell dinner" takes place at 7:30 PM.
- October 16: The United States Army sends a letter to SLCT. James Oberlin to inform him of the closure of the ATLAS Program. Not understanding why they would do so, the senior lieutenant colonel decides to wait and discuss the situation with chief research scientist Dr. Isaac Hammond.
- October 18: Hornwright Industrial wins in the "Man vs. Machine" competition against the Garrahan Mining Company due to cheating.
- October 19: Scott Conroy falls into a sinkhole and breaks his leg while investigating a sunken church in the Mire for ghosts.
- October 21: At 9:30 am EST Vault-Tec staff at Vault 94 receive the decryption keys to unseal their new orders for the Vault. With the exception of maintenance engineer Tyrone Hayes, the staff wrap up their assignments and depart for Vault-Tec University. Hayes receives orders to contact Pastor Gabriella Salavar and informs her that she and her congregation have a standing invitation to enter Vault 94.
- October 22: Invading United States forces push Chinese military back Beijing.
- October 22: The platinum chip is printed at Sunnyvale, and is to be delivered the next day by courier directly to Mr. Robert House.
- October 22: Scott Turner sabotages Watoga's automated emergency service protocols as part of Operation Free Watoga, turning the robots hostile and triggering a mass evacuation of the city as the technology-dependent citizens are massacred.
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- October 23: 82 students from the Early Dawn Elementary school go on a field trip to Lamplight Caverns with a couple of teachers and a few parent chaperones.
- October 23: L.O.B. Enterprises is raided by federal agents.
- October 23: Dr. Hein, a Nuka-Cola Corporation geneticist, is taken hostage by the A.F.A.D. at the Angry Anaconda in Nuka-World.
- October 23: The National Catastrophe Relief Auxiliary and the National Guard are deployed to set up their contingency plans before the nuclear blasts. One unit of the NCRA, Response Unit MD-478 commanded by Presiding Officer Nancy Kroydon was deployed to Germantown, where they would assist in evacuating civilians and provide medical treatment when necessary.
- October 23: The Sole Survivor and their family evacuate their home in Sanctuary Hills to Vault 111. Once inside, they and the other Vault residents are placed in indefinite cryonic suspension by Vault-Tec personnel.
- October 23: A Halloween costume show was to be held at local Freddy Fear's House of Scares costume stores.
- October 23: At 12:03 AM, the commander of the United States Pacific fleet reports 3 Unidentified Submerged Objects off the coast of California to the Joint Chiefs of Staff.
- October 23: At 3:37 AM, the United States Air Force detects a squadron of airplanes off the coast of the Bering Strait.
- October 23: At 9:13 AM, the Integrated Operational Nuclear Detection System reports 4 nuclear launches. DEFCON is raised to 2.
- October 23: At 9:17 AM, NORAD confirms the launch of ICBMs. DEFCON is raised to 1.
- October 23: At 9:26 AM, the Defense Intelligence Agency at The Switchboard confirmed the nuclear response scenario MX-CN91.
- October 23: At 9:42 AM, Switchboard confirms nuclear strikes in Pennsylvania and New York.
- October 23: At 9:47 AM, all monitoring stations at The Switchboard go offline.
- October 23: The Great War begins, and ends.
- October 23: One National Catastrophe Relief Auxiliary unit is directly hit by the nuclear blasts in the Belt Loop.
- October 23: Skylanes Air flights Skylanes Flight 1665 and Skylanes Flight 1981 take off from Washington, D.C. and Chicago to Boston, respectively; they both crash en route due to the effects of the nuclear detonations.
- October 23: Pastor Salavar and her congregation arrive at Vault 94 around noon as radiation begins to intensify. The Vault door's failsafe trips at approximately 1:30, locking out the second bus of residents.
- October 23: Salt Lake City is hit by thirteen nuclear warheads. Randall Clark witnesses the destruction of the city and the loss of his family.
- October 23: The Sierra Madre gala event begins, but is cut short by the war. The casino hermetically seals itself and the holographic security kills many of the guests. The few scattered survivors eventually commit suicide in the following hours and days. Vera Keyes dies from an overdose of her pain medication, while Frederick Sinclair dies in his attempt to disarm his traps. The only known survivor is Dean Domino.
- October 23: Mr. Robert House saves Las Vegas and most of the surrounding area from complete destruction with his defenses at the Lucky 38, stopping 68 of the 77 ICMBs launched at Las Vegas, 59 through forced deactivation and 9 destroyed with laser cannons mounted on top of the Lucky 38.
- October 23: The Lucky 38's operating systems crash under the strain of the nuclear attack. Forced to work with an inferior version of the OS, he suffered numerous system crashes and is even forced into a coma by one of the failures before being able to reboot an earlier, stable version that only allowed him to save Las Vegas from 68 out of the 77 warheads, 59 disarmed and 9 destroyed, aimed at the city.
- October 23: Following the Great War, mothership Zeta abducts Sally and her sister, her parents having died during the war.
- October 23: At 09:47:51 AM, the National Isolated Radio Array experiences power fluctuations due to EMP from nuclear detonations and auto-caps its signal strength. The event is noted in the error log.
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- October 24: The Boylston Club adds its Memoriam Gala to its October events calendar.
- October 24: The Whitespring resort is sealed against radiation at the orders of the new general manager.
- October 27: The Sierra Madre was set to fully open.
- October 28: After having wandered for five days, Randall Clark takes refuge in a former USGS research station inside a cave in Zion Canyon.
- October 29: Then-Lieutenant Elizabeth Taggerdy is contacted by then-only secessionist Roger Maxson.
- October 30: The Boylston Club has its Memoriam Gala; those that attend agree to commit mass suicide rather than live in a post-nuclear America.
- October 30: Lavonne makes a telephone call to her friend warning him of the nuclear devastation. He follows her coded advice and sends his teamsters home to their families.
- October 31: The military begins sending out Vertibirds to towns across the United States with medical supplies in an attempt to treat the injured and dying and guard towns with the two-man teams that piloted the Vertibirds.
- October 31: A black rain (caused by the irradiated material and carbon from widespread fires being spewed into the upper atmosphere) begins to come down in areas across the United States and likely the globe, causing a spike in radiation levels in affected areas.
- November: Ms. Carrie Delaney is the last adult to leave Little Lamplight Caves in search of help. Ten-year-old child Jason Grant takes charge in her absence.
- November 1: Theodore Croup wakes to the complete devastation of his family, who began suffering from ghoulification.
- November 1: The foreman of a South Boston factory learns via radio that Framingham, Massachusetts, was completely devastated.
- November 1: The 121st Infantry Platoon, led by Captain Elliott Maxwell, arrives at and secures Monongah Power Plant under orders from military command.
- November 2: A Special Election for Senator of the Appalachia Territories was set to take place on this day, filling the vacated seat of Samuel Blackwell.
- November 4: Camp Venture is secured by Taggerdy's Thunder in preparation for winter.
- November 14: Surviving staff and patients abandon the Berkeley Springs clinic following an attack by raiders three days prior.
- December 22: Following an order from military command, half of the 121st Infantry Platoon leaves Monongah Power Plant, leaving it defended by only two squads.
- December 25: The security and support staff of Vault 111 celebrates Christmas.
- The planned opening of the Angry Anaconda at Nuka-World.
- Winter: The first winter after the Great War is especially challenging in Charleston and becomes one that all others are compared to in terms of severity.
- January 1: The General Atomics Galleria was planned for automatic re-opening.
- Rex Meacham finishes Project Cobalt.
- January 8–10: What sounds like a two day windstorm occurs in Zion Canyon, the radiation dropping 500 rads.
- January 14: Raiders murder a patrol group from the 121st Infantry Platoon, alerting them to the outside threat.
- January 15: Glowing green snow falls in Zion Canyon.
- January 26: The city of kids, Little Lamplight is officially founded. By unanimous vote, Jason Grant is named as the city's first mayor.
- January 28–30: The background radiation in Zion Canyon is finally low enough for Randall Clark to explore outside the USGS research station. He quickly finds himself to be the only living thing in the immediate vicinity.
- February 2: Theodore Croup gathers the shuffling remains of his family together and locks them in the basement, unable to bring himself to end their suffering, and goes out to look for other survivors, both human and ghoul alike.
- Februrary 2: Raiders directly attack the 121st Infantry Platoon's position at Monongah Power Plant for the first time. Nine soldiers are killed, leaving only fifteen men defending the plant.
- March 12: The 121st Infantry Platoon's position at Monongah Power Plant is down to twelve men thanks to repeated attacks by the Raiders. Some of the soldiers begin considering retreating from the plant.
- April 23: Vault 111's 180-day mandatory shelter period elapses, but the overseer refuses to open the Vault, having not received the scheduled all-clear signal. The support staffers and security grow restless with their continued confinement and plot a mutiny.
- May 25: Captain Elliott Maxwell is killed. With only nine men left, the remnants of the 121st Infantry Platoon retreat from Monongah Power Plant under the new leadership of Master Sergeant Thomas Senecheck.
- July: The United States Space Administration's Mars Shot Project was originally planned for this month; however, the administration decided to delay the launch due to its fears of exacerbating the then current geopolitical conflict.
- July 21: The snow finally thaws in the mountains after a winter of the century, radiation levels are down, and the Whitespring Resort comes back to life.
- August: Shannon Rivers makes her first excursion as the "Mistress of Mystery."
- August 3: Carmen Greene, Matthew Johnston, Elizabeth Chambers and Joel Chambers of Vault 51 are killed during a confrontation regarding the affairs they are having with one another. Their bodies are found by Helen Marks and Reuben Gill.
- August 6: Omar Stephens finds Helen Marks dead, presumed poisoned, in the Vault 51 mess hall. Her death spurs Reuben Gill to go on a rampage, killing all the residents in the Vault.
- August 30: The Whitespring Resort is locked down to maintain its supplies.
- October 23: Vault 94 re-opens as the mandatory minimum shelter period ends. Vault ambassadors are dispatched as missionaries across Appalachia to aid and assist survivors.
- November 11: Shannon, Frederick, and Olivia Rivers discover four children in their garage, scavenging. The girls are accepted; the boy, Brody Torrance is sent away.
- November 20: The mayor of Harpers Ferry, Miranda Vox, sends a group of survivors with an ambassador from Vault 94 to investigate their claims of being able to feed the town. Certain the dwellers' hospitality is a trap, the group massacres the Vault's leaders and attacks the Vault's G.E.C.K. unit, triggering a massive nuclear explosion. A thick fog pours from the Vault's entrance, rapidly intensifying the area's swampy environment and mutating the region's thick foliage to create The Mire.
- December 1: The Whitespring Resort's "Modern Heritage" initiative automatically activates, surprising the staff and guests.
- December 12: The Whitespring Resort's staff learns that the "Modern Heritage" initiative cannot be overridden and the guests will be kicked out on January 1. Guests and staff prepare for expulsion.
- December 31: The Whitespring Resort hosts its last New Year's Gala, supplies are doled out, and people move out into the wasteland. A group decides to take out the robots at the golf course and use it as a base of operations.
- Raleigh Clay gives the all-clear signal for Free States members to emerge from their bunkers. Clay is contacted by the mayor of Harpers Ferry, desperate for assistance following the nuclear attacks. Despite previous misgivings between the townsfolk and the Free States, Clay ultimately agrees to provide aid.
- A group of Free States members secures the Thunder Mountain Power Plant but is later assaulted by Taggerdy's Thunder. After a two-day siege, the group chooses to surrender the complex.
- April 29: The Order of Mysteries is founded.
- The artificial intelligence Skynet, in Sierra Army Depot VI, becomes self-aware, according to its own records.
- Camp Venture is already providing survival training to members of the Free States.
- January 3: Taggerdy's Thunder recruit E. Fisher goes AWOL from Camp Venture at the end of training and steals several supplies in the process, including a combat shotgun and ammunition. Ted Wilson attempts to track Fisher down but loses his trail at the base of the Savage Divide.
- October 23: The Vault-Tec Corporation operative initiates the experiment of Vault 95.
- December 10: Paladin Elizabeth Taggerdy requisitions supplies from Charleston for fighting Huntersville mutants; Speaker Abigale Poole reluctantly agrees.
- December 24: Cutthroats second in command, Rosalynn Jeffries, attempts to raid Charleston but is captured. Her capture is used by the Responders in an attempt to get to the leader of the Cutthroats David Thorpe to negotiate a prisoner exchange. Thorpe responds by destroying Summersville Dam with a mini nuke, killing Rosalynn and triggering a disaster that would come to be known as "the Christmas Flood."
- December 25: The Christmas Flood occurs and the City of Charleston is devastated. Shannon Rivers decides that raiders are a major threat.
- Following a loss of contact with other Enclave installations, the Whitespring bunker holds an emergency election for the position of President. Secretary of Agriculture Thomas Eckhart wins by manipulating the automated voting systems.
- January 11: Carol Sweeney and a few raiders leave the Cutthroats and desert from David Thorpe in disgust over their gang's role in The Christmas Flood.
- March 5: After surveying the Savage Divide all winter, Shannon Rivers decides to let her pupils fight on the frontlines.
- May: Throughout the month Randall Clark notes mutated life returning to Zion Canyon. Particularly, prickly pear, honey mesquite, banana yucca, Bighorners, stinging flies larger than normal lizards, and something dragonfly sized that zaps them in mid air then scoops them up.
- November 9: Brotherhood of Steel reservist K Kelly commits suicide at Camp Venture. Grant McNamara finds her body.
- February 15: Judith Blackwell dies.
- April 10–~June 17: Randall Clark leaves Zion Canyon to visit Salt Lake City, circling pockets of radiation and scavenging. Outside of Nephi he caught the trail of three men heading toward Fountain Green, he didn't follow however, believing them to be cannibals due to the missing corpses of the old couple he mercy killed on the day of the Great War.
- September 8: Olivia Rivers grows increasingly resentful of her mother's new persona as the "Mistress of Mystery," and their new Order of Mysteries. Particularly her role, seeing it as her having to be the "perfect, obedient little soldier."
- The planned date for the U.S. military to bring the VB-02 Vertibird, a Vertical Take Off and Landing (VTOL) aircraft, into service. For obvious reasons, this never happens, but the Enclave resumes development after regaining its footing.
- September: Carol Sweeney witnesses a giant bat emerge from a crack in the earth near Watoga.
- Major Ragnarsdottir of the Appalachian Enclave leads a military coup against self-proclaimed President Thomas Eckhart. Shortly afterward they attempt to destroy the Whitespring bunker's administrative AI, MODUS. MODUS responds by destroying the bunker's weapons lab and sealing the exits, releasing deadly toxins into the air circulation and killing all Enclave personnel.
- February ~8-14: The Order of Mysteries suffers its first casualty when Mistress Clarissa is killed in action and all members are given two days off. Clarissa's death hits Olivia Rivers particularly hard exacerbating her anger, frustration and sadness, and making her sympathetic to raider behavior. Other members start to question the Order's methods.
- March 26: Tex Rogers receives a training commendation, the first one issued at Camp Venture, and is fast-tracked for promotion to full Knight of the Appalachian Brotherhood of Steel for the upcoming offensive in Huntersville.
- May 22: Eve Devoir becomes the "Mistress of Novices" of the Order of Mysteries.
- May 30: An individual going by the initials "O.R." manages to override the security lockdown at the Whitespring Resort.
- June 1: The Battle of Huntersville ends with the Brotherhood of Steel and Responders standing together. Roger Maxson formulates a new mission for the Brotherhood.
- June 8: Olivia Rivers attacks the north Cutthroat camp, after recognizing Brody Torrance. Seeking inroads into the raiders, she makes him an offer – information for information.
- June 9: David Thorpe accepts Brody Torrance's idea of infiltrating the Order of Mysteries.
- July 1: Brody Torrance is 200 caps behind in his quota, no closer to infiltrating the Order of Mysteries.
- July 19: David Thorpe has Rose dispatch five men to Summersville to set up the ambush proposed by Brody Torrance and Olivia Rivers. Brody is ordered to bring back the head of the Mistress or forfeit his in lieu.
- July 24: The raider ambush of Mistress Allison Long is sprung when one of the attackers acts early. Olivia Rivers is forced to kill her fellow Mistress to ensure the success of the ambush. Brody Torrance brings Allison's head to David Thorpe and Olivia carries her body back to Riverside Manor.
- September 21: To more easily set up ambushes for the remaining members of the Order of Mysteries, Olivia Rivers travels to Sugar Grove to retrieve a automated data exfiltration holotape to copy Cryptos and deliver it to the raiders. She passes the holotape to Brody Torrance, including a threat to David Thorpe about keeping up his end of their bargain.
- October 7: After the seventh confirmed loss to the raiders, the Order of Mysteries accelerates and automates its training.
- October 10: Three more Mistresses of Mystery are confirmed dead and, with two others missing, the Order goes into lockdown. Only Eve, Olivia and Shannon Rivers are allowed to leave Riverside Manor grounds.
- November 13: Mistress Rachel West catches on to Olivia Rivers' betrayal. Olivia walks in on Rachel informing Eve Devoir of the situation and kills them and the remaining members of the Order. Olivia writes one last message to her mother to meet her at their camping site at Seneca Rocks.
- November 16: With the end of the Order of Mysteries in sight, David Thorpe instructs Brody Torrance to leave no loose ends.
- November 18: Shannon Rivers writes her final message, effectively disbanding the Order of Mysteries.
- November ~18: Olivia and Shannon Rivers confront one another at Seneca Rocks. Olivia kills her mother but is betrayed by Brody Torrance who guns her down after her victory, ending the Order of Mysteries.
- May 3: The Brotherhood of Steel makes contact with wastelanders in the Cranberry Bog, engaging in trade at their Big Bend Tunnel East checkpoint.
- March 11: At 05:13:46 AM, the National Isolated Radio Array error logging software disables itself.
- May 15: The first water readings are taken at Flatwoods.
- February 20: The Responders deploy self-serve kiosks at their outpost in Flatwoods to help with the overflow of survivors coming from Sutton.
- April 3: MacFadden completes his initial check of the Vault-Tec Agricultural Research Center and dedicates himself to restoring it to support agriculture.
- July 20: Camp Venture is officially abandoned by the Appalachian Brotherhood of Steel to focus on Fort Defiance and the Thunder Mountain Power Plant.
- Fall: The Brotherhood of Steel Big Bend Tunnel checkpoint continues to operate, engaging in trade with nearby communities.
- June 12: MacFadden successfully reactivates the Vault-Tec Agricultural Research Center's fleet of Mr. Farmhands, but is unable to get them to start replanting crops.
- January 28: The Brotherhood of Steel launch Operation Touchdown, to wipe out the scorchbeast threat. After the loss of contact with Paladin Elizabeth Taggerdy's team Senior Knight Ted Wilson orders all those who can to join his recovery team, to discover their fate and that of Operation Touchdown.
- January 30: Paladin Elizabeth Taggerdy's team successfully detonate explosives inside the glassed cavern, causing widespread tunnel collapses.
- February 2: Operation Touchdown is declared successful after three days of the absence of scorchbeast sightings.
- March 4: The Brotherhood of Steel's continued requisitions put relations with Responders at nadir when the Brotherhood accidentally learns of Amy Kerry's Scorched Plague environmental monitoring program data.
- March 12: The Brotherhood of Steel demands details about Amy Kerry's project at gunpoint. Maria Chavez has no choice but to share some of the data, however, she didn't share all the data, nor tell them where Amy Kerry is living. Relations between the BoS and Responders are permanently soured by this point.
- April 16: Amy Kerry finished automating her environmental analysis project in light of her being sought after by the Brotherhood of Steel. After hearing their power armor may be less than a mile away from her home she decides its time to move. She locks her terminal and records a holotape message for Jeff Nakamura so he knows where to find her.
- June 3: After two months of clear skies scorchbeasts are seen in ever-increasing numbers, the Brotherhood of Steel confirms Operation Touchdown was a failure.
- Summer: The Brotherhood outpost at Big Bend Tunnel East is found abandoned.
- September 20 through November 15: 28 survivors from Mexico (eleven men, eight women, and nine children) arrive in Zion Canyon.
- August 13: With scorchbeast numbers increasing, and with the range of Scribe Grant McNamara's sonar array not able to attract all scorchbeasts to a kill zone, the Brotherhood of Steel resolves to fight to the last man.
- August 18: The defenses of the Thunder Mountain Power Plant are finalized, no soldier leaves their post.
- August 18: Fort Defiance falls. The Appalachian Brotherhood of Steel is almost entirely wiped out by the Scorched.
- August 19: The Thunder Mountain Power Plant falls to the Scorched Plague. The Brotherhood in Appalachia is wiped out.
- The Free States are attacked by the Scorched and driven from Harpers Ferry to their bunkers. Raleigh Clay bans all efforts to recover what is left of the town. The faction begins researching countermeasures for the Scorched.
- February: The inhabitants of Vault 22 abandon their Vault due to an outbreak of Beauveria mordicana, mutated spores infecting most of the dwellers and overrunning the Vault.
- February 11: 118 Vault 22 dwellers arrive at the Zion Canyon. Infected with Beauveria mordicana, their arrival brings spore carriers and spore plants. They clash with the Mexican refugees, killing some and capturing the rest.
- July 6: Dr. Claire Hudson arrives at AVR Medical Center, and begins work on a vaccine for the Scorched Plague.
- July 18: Scorched confirmed in Flatwoods.
- July 24: Last sign-in by Garry Wilkins, Sofie Yates and Delbert Winters at Flatwoods.
- August 1: Claire Hudson prepares infrastructure for research into the Scorched vaccine.
- August 2: Mike Scholler trades armor for food and water and leaves for Fort Defiance.
- August 12: Scorched attack Charleston, nearly destroying the inoculation project.
- August 14: Dr. Adam Veen arrives at the Responders Flatwoods outpost seeking medical assistance after years of a terrible diet.
- August 20: The vendor bot of Flatwoods runs out of supplies after a lack of restocking. Dr. Adam Veen starts scavenging for supplies to alleviate this problem.
- August 25: Brad Hooper checks in at the Responders Flatwoods outpost seeking medical attention after gigantic bugs attacked him at his shack near Vault 76.
- September 1: The Responders have not communicated with the Flatwoods outpost for some time. When Cullen McLeeder advances to "Volunteer" from "Volunteer candidate," he becomes able to use the database and discovers where the Responders are at that point, Morgantown Airport. He and some of those at the outpost leave Flatwoods to make contact.
- September 2: Dr. Claire Hudson makes a breakthrough with the Scorched plague inoculation project. Upon hearing this, Maria Chavez informs Dr. Hudson that the Fire Breathers are itching to take the fight to the Scorched.
- October 20: Dr. Claire Hudson's research stalls, unable to contact Jeff Nakamura to acquire the blood samples and replacement fuse needed. Dr. Hudson comes to the conclusion that she needs to leave instructions to finalize the Scorched vaccine should she be unable to complete it.
- October 20: The Fire Breathers ready for their final mission to seal Big Bend Tunnel. The operation fails. Hank Madigan is missing.
- October 25: Responders researcher Kesha McDermott last signs in to the Responders’ Flatwoods automated computer system. She dies while conducting her ongoing hydrology experiments.
- November 5: Leader of the Flatwoods Responders outpost Dassa Ben-Ami signs into the Responders’ Flatwoods automated computer system for the last time due to her death in the Responders clinic shortly after.
- November 7: A massive number of scorchbeasts and Scorched begin massing for an attack on Morgantown Airport. All surviving Responders are recalled to defend their headquarters. The Morgantown Airport falls, and the Responders are wiped out.
- November 20: Cullen McLeeder signs in for the last time at the Responders’ Flatwoods outpost, trying to contact the rest of the Responders. He remains unaware of their demise almost two weeks prior.
- William Keller and his fellow ghouls flee Appalachia to join a larger ghoul community in Washington, D.C.
- September 9: Randall Clark writes about his apprehension regarding his wife Sylvie's pregnancy in his logs. He travels to Toquerville to gather medical supplies in preparation soon after.
- March 5: During the delivery of his son Michael with Sylvie, Randall Clark encounters complications, both her and the baby die in childbirth. Randall begins to seriously consider suicide after the loss of his second family.
- The Vault 76 overseer enacts rationing because of unaccounted population growth.
- August: The Secret Service perform reactor maintenance on Vault 79's dual reactor system, but a malfunction occurs, turning most Secret Service agents into ghouls.
- September: Vernon Dodge escapes the slave fighting arena at Watoga Civic Center, taking residence in Watoga Towers.
- October 23: Wastelanders and Steel Dawn begins: The Scorched Plague begins to subside, and Raiders and Settlers begin to return to Appalachia alongside various other groups, such as former members of the United States Armed Forces, Brotherhood of Steel expeditionaries, Blue Ridge Caravan Company merchants and other wastelanders to name a few. Two groups, the Raiders and Settlers have created the settlements of the Crater and Foundation respectively.
- The Blue Ridge Caravan Company sets up shop at both ends of Big Bend Tunnel.
- The Brotherhood First Expeditionary Force's radio broadcast becomes audible in Appalachia. Responding to it, Russell Dorsey begins to fortify the ATLAS Observatory in preparation for their arrival, with help from the Vault Dwellers and a number of reprogrammed construction protectrons. Thanks to their assistance, the new Fort Atlas is finished later that year.
- The Institute is founded by the group of former Commonwealth Institute of Technology students who took refuge in the college's underground level at the time of the Great War.
- Skynet is given its final orders by its masters, then abandoned to guard Sierra Army Depot VI, according to its own records.
- A group of machinists comes to the Boneyard, settling into an old, abandoned factory and beginning to manufacture weapons and ammunition.
- The Crimson Caravan Company is founded by Demetre Romara.
- The Boneyard machinists run out of scrap in the surrounding area, form trade relations with Adytum.
- Regulators take control of Adytum. The trade relations with the Gun Runners sour, as the trade begins to favor the settlement heavily.
- August: The Institute begins researching FEV and creates the first super mutants in an effort to create a replacement for their synths.
- The Commonwealth Minutemen are formed. They rise to prominence following their courageous defense of Diamond City from super mutants.
- Curie, now finished with her decades-long broad-spectrum cure, places an emergency call to Vault-Tec to make them aware of the success. All the while, the secret section of Vault 81 deteriorates due to lack of maintenance, and the mole rat escape started by Clyde the mole rat.
- The residents of Vault 111 are briefly freed from cryonic suspension by agents of the Institute in a field operation led by Conrad Kellogg. The agents kidnap the infant Shaun and the Sole Survivor's spouse is murdered by Kellogg. The Sole Survivor then reenters suspension, while the rest of the residents' life support is turned off.
- The Commonwealth Provisional Government is proposed. In what becomes known as the Massacre of the CPG, the government is wiped out before it gets off the ground.
- The remnants of the Naval Research Institute lead by Horace Pinkerton clear the mirelurks off the wreck of a beached aircraft carrier that later becomes Rivet City.
- April 25: Rivet City is named at the inaugural meeting of the city council, consisting of members Horace Pinkerton, Annette Holmes and Brad Danvers.
- Herbert Dashwood meets Argyle and steals his girlfriend. They are best friends ever since.
- February: A survey party from Vault 101 led by Anne Palmer scouts the area of Springvale and Megaton.
- Summer: A cholera outbreak at the Blue Destiny Brothel kills most of the prostitutes in addition to Madam Destiny Chao, which shuts down the brothel for good.
- Harmon Jurley becomes the leader of the Paradise Falls slavers after Penelope Chase' death that resulted from leading the slavers to Rockopolis.
- Rockopolis is razed and its population sold to The Pitt. Argyle dies trying to escape.
- On the way to the Capital Wasteland, the Brotherhood expeditionary force attacks the raider town called "the Pitt" and razes it to the ground. These events are later known as the Scourge. They only suffered one casualty, Ishmael Ashur, who was believed to have been killed in action.
- The Capitol Preservation Society retrieved the Constitution of the United States from the National Archives.
- November: The Railroad's headquarters is raided by The Institute. Only one survives the raid and The Railroad is left in shambles. Most of those that survived by not being at HQ during leave out of fear. All in all, the Railroad is left with just 13 members to rebuild.
- July 13: The Lone Wanderer celebrates their tenth birthday and receives presents: a Pip-Boy 3000, a kid's baseball cap, A birthday poem, a Grognak the Barbarian comic book, a sweetroll, and a BB gun.
- Attempting to occupy Hoover Dam, the NCR instead meet Mr. Robert House and the Three Families. The sides enter negotiations, resulting in the signing of the Treaty of New Vegas. NCR is allowed to control the Dam and to set up headquarters at Camp McCarran, while recognizing Mr. House and the three families as the rightful owners of the Strip. 5% of the energy from the Dam is transferred to the Strip while the rest goes to California.
- The NCR Embassy is set up in the New Vegas Strip.
- August 3: The Lone Wanderer takes the G.O.A.T..
- Horace Pinkerton enters Vault 112 and salvages computer parts, acquiring a memory chip for a circuit neuralizer.
- DiMA kills Captain Avery and replaces her with a synth to establish better relations with Far Harbor.
- October 2: William Brandice moves his family to Grayditch, after leaving Navarro, deserting from the Enclave army.
- November 15: The scientist and doctor Weston Lesko appears in Grayditch, moving in with the Wilks family. He soon relocates into a shack nearby.
- A band of raiders attempt an assault on Megaton but fail when their leader Boppo is shot and killed by the town sheriff, Lucas Simms.
- Vault 81 opens its door to the Commonwealth inviting communication and much-needed trade with any friendly settlements. This move is made out of dire necessity for food and parts to maintain the 200-year-old Vault as there is still a great deal of isolationist sentiment amongst the population.
- Elder Nolan McNamara begins sending out small patrols from Hidden Valley, for the first time since the Brotherhood's defeat at HELIOS One.
- Elder Owyn Lyons dies. His daughter, Sentinel Sarah Lyons, becomes elder. Her subsequent death in combat leaves Lyons' Brotherhood of Steel adrift under the ineffectual rule of elected elders.
- November 14: The Securitron vault experiences technical problems, including a radiation leak at 3:47 and a power surge at 3:50. The protectron dispatched at 3:48 becomes non-responsive due to the power surge and the facility goes on Security Alert Level 1 at 3:54.
- Following the defeat of Shephard and pacification of the Capital Wasteland, Arthur Maxson is named elder of Eastern Brotherhood of Steel, following re-establishment of ties with the West.
- Arthur Maxson negotiates a treaty with the Brotherhood Outcasts, reuniting them with the Brotherhood proper. Named Elder, Maxson reorganizes the Lyons' Brotherhood of Steel into a new Eastern division and becomes the Supreme Commander of the Brotherhood of Steel.
- Liam Binet, Institute scientist, establishes communication with the Railroad under the codename "Patriot."