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.
HeatJuly 4, 1999
Philadelphia · 58 killed · 124 injured ·
HeatJuly 12, 1997
Philadelphia · 23 killed · 50 injured ·
Excessive HeatJuly 21, 2011
Philadelphia · 22 killed · 48 injured ·
HeatAugust 1, 2006
Philadelphia · 21 killed ·
HeatAugust 6, 2001
Philadelphia · 19 killed ·
Excessive HeatJune 7, 2008
Philadelphia · 18 killed · 1 injured ·
HeatJuly 1, 2002
Philadelphia · 15 killed ·
HeatAugust 11, 2002
Philadelphia · 8 killed ·
HeatJuly 20, 1998
Philadelphia · 8 killed · 75 injured ·
Flash FloodJuly 15, 2023
Bucks · 7 killed ·
HeatJuly 4, 1999
Delaware · 7 killed ·
Winter WeatherJanuary 6, 2004
Southern Clinton · 6 killed · 12 injured · $1.5M damage
Winter WeatherMarch 28, 2022
Schuylkill · 6 killed ·
Excessive HeatJuly 5, 2010
Philadelphia · 6 killed ·
Excessive HeatJuly 16, 2008
Philadelphia · 6 killed ·
HeatJuly 18, 2005
Philadelphia · 6 killed ·
Flash FloodJanuary 19, 1996
Lycoming · 6 killed ·
Excessive HeatJuly 4, 2012
Philadelphia · 5 killed ·
HeatJuly 29, 2011
Philadelphia · 5 killed ·
HeatJuly 25, 2005
Philadelphia · 5 killed ·
HeatAugust 7, 2000
Philadelphia · 5 killed ·
HeatMay 6, 2000
Philadelphia · 5 killed ·
HeatAugust 1, 1999
Philadelphia · 5 killed ·
FloodSeptember 7, 2011
Dauphin · 4 killed · $150.0M damage
BlizzardJanuary 7, 1996
Philadelphia · 4 killed · $1.0M damage
Flash FloodAugust 19, 2011
Allegheny · 4 killed · 1 injured · $500K damage
HeatAugust 2, 2005
Philadelphia · 4 killed ·
HeatJuly 4, 2003
Philadelphia · 4 killed ·
HeatJuly 4, 1999
Chester · 4 killed ·
HeatJuly 27, 1997
Philadelphia · 4 killed ·
HeatJune 21, 1997
Philadelphia · 4 killed ·
Flash FloodJanuary 19, 1996
Juniata · 4 killed ·
Flash FloodJune 27, 2006
Luzerne · 3 killed · $100.0M damage
Flash FloodSeptember 16, 1999
Montgomery · 3 killed · 8 injured · $12.0M damage
FloodJanuary 19, 1996
Montgomery · 3 killed · $3.2M damage
FloodSeptember 7, 2011
Lancaster · 3 killed · $800K damage
Winter StormJanuary 25, 2026
Lehigh · 3 killed ·
Excessive HeatJuly 6, 2016
Philadelphia · 3 killed ·
HeatJuly 4, 2012
Lehigh · 3 killed ·
Excessive HeatJuly 23, 2010
Philadelphia · 3 killed ·
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.