Pennsylvania Storm & Severe Weather History
Since 1996, Pennsylvania has logged 48,588 severe-weather events — about 1,567 a year — with 676 direct deaths, 1,883 injuries and $3.6B in reported property damage.
By event type
Thunderstorm Wind19,22831 d$270.2M
Flash Flood4,72773 d$2.0B
Hail4,638—$7.9M
Winter Weather3,47014 d$2.6M
Heavy Snow2,4524 d$32.3M
Winter Storm2,44712 d$80.1M
Flood2,20129 d$837.4M
High Wind1,62816 d$108.8M
Strong Wind1,25910 d$8.4M
Drought802——
Heat700318 d—
Tornado5777 d$183.9M
Ice Storm568—$1.4M
Heavy Rain5672 d$1K
Extreme Cold/Wind Chill5616 d$960K
Lightning55226 d$17.5M
Events by year
19962026
Notable events (400)
Events with deaths, major damage, or a strong tornado — deadliest first.
Flash FloodSeptember 1, 2021
Delaware · $15.0M damage
Lake-Effect SnowDecember 24, 2017
Northern Erie · $15.0M damage
Flash FloodAugust 9, 2007
Allegheny · $15.0M damage
Flash FloodSeptember 18, 2004
Wayne · $15.0M damage
Flash FloodSeptember 18, 2004
Pike · $15.0M damage
Flash FloodSeptember 17, 2004
Wyoming · $15.0M damage
Flash FloodJune 22, 2001
Berks · $15.0M damage
Thunderstorm WindJune 20, 1996
Union · $15.0M damage
Tornado (F1)June 2, 1998
Allegheny · 50 injured · $13.0M damage
Flash FloodAugust 2, 2009
Montgomery · $12.0M damage
Winter StormMarch 7, 2008
Northern Erie · $12.0M damage
Flash FloodSeptember 8, 2004
Crawford · $11.5M damage
FloodSeptember 7, 2011
Lycoming · $11.0M damage
Flash FloodSeptember 9, 2023
Lackawanna · $10.0M damage
Flash FloodJune 20, 2018
Allegheny · 1 injured · $10.0M damage
Lake-Effect SnowDecember 24, 2017
Southern Erie · $10.0M damage
Flash FloodJuly 5, 2007
Beaver · $10.0M damage
FloodJune 28, 2006
Luzerne · $10.0M damage
FloodJune 27, 2006
Bradford · $10.0M damage
FloodJune 27, 2006
Northampton · $10.0M damage
Winter StormJanuary 5, 2005
Monroe · $10.0M damage
Flash FloodSeptember 17, 2004
Susquehanna · $10.0M damage
Flash FloodAugust 1, 2004
Delaware · $10.0M damage
Flash FloodJuly 21, 2003
Crawford · $10.0M damage
Flash FloodAugust 11, 2001
Lehigh · $10.0M damage
Flash FloodAugust 6, 2000
Allegheny · $10.0M damage
Flash FloodSeptember 7, 1999
Union · $10.0M damage
Tornado (F3)May 31, 1998
Berks · 7 injured · $1.4M damage
Tornado (F3)May 31, 1998
Pike · 2 injured · $1.0M damage
Heavy SnowDecember 20, 2004
Mercer · 100 injured · $650K damage
Tornado (F3)July 21, 2003
Potter · $200K damage
Thunderstorm WindJune 29, 2019
Huntingdon · 35 injured · $10K damage
Tornado (EF3)July 29, 2021
Bucks ·
Tornado (EF3)July 29, 2021
Philadelphia ·
HeatApril 26, 2009
Northampton · 25 injured ·
HeatAugust 1, 2006
Lehigh · 40 injured ·
Ice StormDecember 11, 2002
Allegheny · 40 injured ·
Winter WeatherJanuary 13, 1999
Philadelphia · 72 injured ·
Tornado (F3)June 2, 1998
Somerset ·
Winter WeatherJanuary 13, 1998
Erie · 29 injured ·
Source: NOAA/NCEI Storm Events Database. Counts are every logged event since 1996; the "notable" list is filtered to events with fatalities, major damage or a strong tornado. Damage is the reporting office's estimate. A record of past weather is not a forecast. See About the Data.