Tornado outbreak sequence of August 4–8, 2023

[4] An EF3 tornado formed in Lewis County, New York, causing significant damage to homes, barns, a ski resort, and a motel.A moist and unstable air mass and very strong winds aloft were present on August 7, with a shortwave trough progressing towards northern portions of Appalachia, and convective available potential energy in the 2500-3500 values yielded for severe thunderstorm development.[81] Hochul's administration and local officials in New York were on stand-by for clean-up and response efforts, while Justice declared a State of Preparedness for all counties in West Virginia.[90][91] Montgomery Parks closed Sligo Creek Parkway and a road because of the threat for flooding, and damaging winds, causing trees to fall.[12][92] Train stations also operated an extra hour because Beyoncé's tour paid $100,000 to do so for fans to arrive at FedExField in Landover, Maryland, and to help people get home.[99] On August 8, additional flash flooding resulted in the Maine Turnpike reducing their speed limit to below 45 miles per hour (72 km/h) south of Falmouth.
Satellite image of the severe weather system responsible for the tornado outbreak sequence that occurred on August 4–8, 2023.
EF3 tornadoYuma, ColoradoKirk, ColoradoGreat PlainsMidwesternEastern United Statestornado outbreaks of 2023PlainsMidwestLewis County, New YorkYuma CountyBaring, MissouriSangamonChristianIllinoisKnoxville, Tennesseeflash flood emergencyCambridge, MarylandSouth CarolinaAlabamaAppalachiaconvective available potential energyAppalachian MountainsStorm Prediction CenterWashington, D.C.cold frontKentuckyWest Virginiaquasi-linear convective systemPhiladelphiaCharlotte, North CarolinaEnhanced Fujita ratingMillvileMalta BendSalineBaringMarcellineGleneaglePeytonEl PasoMauriceSioux CenterGrand TowerJacksonWillow HillJasperSnyderArcadiaCarrollAuburnBeaverheadBoulderJeffersonDallas CityLa HarpeHancockPawneeTaylorvilleAssumptionHaysvilleDuboisOrangeFrench LickLivoniaWashingtonFarragutKnoxvilleErwin, TNGreen MountainYanceyMitchellJune 6, 1977Louisa, KYFort Gay, WVLawrence (KY)Wayne (WV)ClaremontMooresvilleChina GroveCatawbaIredellBlackrockHuntersvilleMecklenburgLake NormanDrydenBlodgett MillsTompkinsCortlandCross RoadsBird CityCheyenneRawlinsvilleLancasterHarmony, PADeposit, NYSusquehanna (PA)Broome (NY)MunnsvilleMadisonVernon CenterOneidaTabergAllentownLehighRedfieldKintnersville, PAHunterdonWest LeydenMattapoisettPlymouthBarnstableTuba CityCoconinoProwers CountyBroadwaterMorrillmultiple-vortexIdaliaKit CarsonKanoradoShermanMajor League BaseballWashington NationalsPhiladelphia PhilliesNationals ParkNew York MetsChicago CubsCiti FieldCarly Rae JepsenThe Rooftop at Pier 17New York City2023 Leagues CupPhiladelphia UnionNew York Red BullsMarylandWes MooreNew YorkKathy HochulJim JusticeTennesseeGeorgiaJoe BidenWestminster, MarylandMD 140Montgomery ParksSligo Creek ParkwayU.S. District CourtWashington MetroBeyoncéFedExFieldLandover, MarylandFall Creek Falls State ParkNorth CarolinaMassachusettsNorth AndoverLowellNeedhamMaine TurnpikeFalmouthSyracuse, New YorkLaGuardia AirportRonald Reagan Washington National AirportHartsfield–Jackson Atlanta International AirportBaltimore/Washington International AirportColoradoAmerican Red CrossTornadoes of 2023Weather of 2023List of North American tornadoes and tornado outbreaksList of United States tornadoes from July to August 2023time zoneCoordinated Universal TimeNational Centers for Environmental InformationNational Oceanic and Atmospheric AdministrationUnited States Department of CommerceWeather UndergroundJanuary 12Pasadena–Deer Park, TXFebruary 26–27March 1–3March 24–27Rolling Fork–Silver City, MSMarch 31 – April 1Little Rock, ARWynne–Parkin, ARDavis Junction–Belvidere, ILRobinson, IL/Sullivan, INApril 19–20June 14–19June 20–26JerseyDecember 9–10