Storm History: Delaware County, Pennsylvania

Events

1,367

Deaths

25

Injuries

109

Damage

$91 million

Episodes

1,038

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Delaware County

• Heat, July 4, 19997 deaths · 1 event here
• Extreme Cold/Wind Chill, January 22, 20143 deaths · 1 event here
• Excessive Heat, July 16, 20102 deaths · 1 event here
• Winter Weather, January 18, 20152 deaths · 20 injured · 1 event here
• Flash Flood, September 16, 19991 death · 14 injured · $15 million · 50 kt wind · 3 events here
• Blizzard, January 7, 19961 death · $1.4 million · 1 event here
• Strong Wind, February 2, 20151 death · $20,000 · 1 event here
• Heat, July 12, 19971 death · 1 event here
• Heat, July 23, 19991 death · 1 event here
• Thunderstorm Wind, October 14, 20031 death · 1 injured · 56 kt wind · 1 event here
• Lightning, June 2, 20061 death · 1 event here
• Excessive Heat, June 7, 20081 death · 22 injured · 1 event here
• Heavy Snow, December 19, 20091 death · 1 event here
• Heavy Snow, January 21, 20141 death · 1 event here
• Hail, June 3, 20201 death · 72 kt wind · 16 events here

• Flash Flood, September 1, 2021$30 million · 2 events here
• Flash Flood, September 16, 19991 death · 14 injured · $15 million · 50 kt wind · 3 events here
• Flash Flood, August 1, 2004$10 million · 1 event here
• Storm Surge/Tide, September 18, 2003$5.2 million · 52 kt wind · 2 events here
• Tornado, September 27, 1993$5.0 million · F1 · 1 event here
• Flood, October 1, 2010$5.0 million · 1 event here
• Thunderstorm Wind, June 23, 2015$4.9 million · 74 kt wind · 12 events here
• Winter Storm, February 9, 2010$2.5 million · 1 event here
• Blizzard, January 7, 19961 death · $1.4 million · 1 event here
• Winter Storm, February 16, 2003$1.0 million · 1 event here
• Thunderstorm Wind, September 23, 20031 injured · $1.0 million · 61 kt wind · 1 event here
• Hail, June 24, 20102 injured · $1.0 million · 1.75 in hail · 2 events here
• Flood, October 29, 20121 injured · $1.0 million · 70 kt wind · 3 events here
• Flood, April 30, 2014$1.0 million · 1 event here
• Flood, May 1, 2014$1.0 million · 1 event here
• Tropical Storm, August 27, 2011$750,000 · 4 events here
• Flash Flood, June 28, 2006$500,000 · 2 events here
• High Wind, February 12, 2009$500,000 · 56 kt wind · 1 event here
• Flash Flood, August 2, 2009$500,000 · 1 event here
• Thunderstorm Wind, August 17, 1997$300,000 · 1 event here

• Hail, May 22, 20142.5 in hail · 5 events here
• Hail, August 10, 20082 in hail · 1 event here
• Hail, June 24, 20102 injured · $1.0 million · 1.75 in hail · 2 events here
• Hail, March 29, 20091.75 in hail · 2 events here
• Hail, July 14, 19941.75 in hail · 1 event here
• Hail, July 10, 19921.75 in hail · 3 events here
• Hail, November 20, 19881.75 in hail · 1 event here
• Hail, May 20, 20221.5 in hail · 10 events here
• Hail, April 4, 20251.25 in hail · 15 events here
• Hail, July 21, 20211.25 in hail · 1 event here
• Hail, July 3, 20141.25 in hail · 2 events here
• Hail, August 18, 2011$300,000 · 1.25 in hail · 3 events here
• Hail, September 11, 20111.25 in hail · 1 event here
• Hail, June 2, 20061.25 in hail · 1 event here
• Flash Flood, May 20, 20261 in hail · 3 events here

• Tornado, July 29, 1976F3 · 1 event here
• Tornado, October 18, 1967F2 · 1 event here
• Tornado, June 29, 1973$25,000 · F2 · 1 event here
• Tornado, November 20, 1989F2 · 3 events here
• Tornado, July 15, 1992$250,000 · F2 · 2 events here
• Tornado, October 31, 20193 injured · EF2 · 9 events here
• Tornado, August 4, 2020EF2 · 12 events here

Every tornado in Delaware County, with its track

• Hail, June 22, 20261 in hail · 1 event here
• Thunderstorm Wind, June 14, 202650 kt wind · 5 events here
• Flash Flood, June 14, 2026$20,000 · 4 events here
• Excessive Heat, June 11, 20261 event here
• Flash Flood, May 20, 20261 in hail · 3 events here
• Thunderstorm Wind, March 16, 202659 kt wind · 1 event here
• Winter Weather, March 3, 20261 event here
• Winter Storm, February 22, 20261 event here
• Dense Fog, February 17, 20261 event here
• High Wind, February 7, 202657 kt wind · 1 event here
• Winter Storm, January 25, 20261 event here
• Winter Weather, January 18, 20261 event here
• Dense Fog, January 6, 20261 event here
• High Wind, December 29, 202553 kt wind · 1 event here
• Winter Weather, December 26, 20251 event here
• High Wind, December 19, 202555 kt wind · 1 event here
• Winter Storm, December 13, 20251 event here
• Dense Fog, October 6, 20251 event here
• Flash Flood, July 31, 20251 event here
• Excessive Heat, July 29, 20251 event here
• Thunderstorm Wind, July 25, 202556 kt wind · 1 event here
• Excessive Heat, July 25, 20251 event here
• Excessive Heat, July 17, 20251 event here
• Flash Flood, July 9, 2025$90,000 · 10 events here
• Flash Flood, July 8, 20253 events here
• Excessive Heat, July 8, 20251 event here
• Excessive Heat, June 23, 20251 event here
• Thunderstorm Wind, June 19, 202562 kt wind · 8 events here
• Flash Flood, May 30, 20251 event here
• Flash Flood, May 16, 2025$60,000 · 4 events here
• Dense Fog, May 15, 20251 event here
• Hail, May 3, 20251 in hail · 2 events here
• Hail, April 4, 20251.25 in hail · 15 events here
• Winter Weather, February 11, 20251 event here
• Winter Weather, February 8, 20251 event here
• Dense Fog, February 6, 20251 event here
• Winter Weather, February 6, 20251 event here
• Winter Storm, January 19, 20251 event here
• Winter Weather, January 6, 20251 event here
• Dense Fog, December 9, 20241 event here
• Dense Fog, September 12, 20241 event here
• Excessive Heat, August 2, 20241 event here
• Excessive Heat, July 16, 20241 event here
• Hail, July 16, 20241 in hail · 2 events here
• Excessive Heat, July 9, 20241 event here
• Excessive Heat, July 5, 20241 event here
• Thunderstorm Wind, June 23, 202450 kt wind · 2 events here
• Excessive Heat, June 22, 20241 event here
• Coastal Flood, April 12, 20241 event here
• Coastal Flood, April 4, 20241 event here
• Coastal Flood, March 9, 20241 event here
• Winter Storm, February 16, 20241 event here
• Winter Storm, February 13, 20241 event here
• Dense Fog, January 26, 20241 event here
• Winter Storm, January 19, 20241 event here
• Winter Weather, January 15, 20241 event here
• Coastal Flood, January 13, 20241 event here
• Coastal Flood, January 10, 20241 event here
• Flood, December 27, 20231 event here
• Flood, December 18, 2023$300,000 · 1 event here
• Coastal Flood, December 18, 20231 event here
• Dense Fog, December 9, 20231 event here
• Dense Fog, December 2, 20231 event here
• Hail, September 8, 20231 in hail · 1 event here
• Hail, August 12, 20231 in hail · 1 event here
• Tornado, August 7, 2023EF1 · 4 events here
• Thunderstorm Wind, July 29, 202350 kt wind · 3 events here
• Flash Flood, July 25, 20231 event here
• Thunderstorm Wind, July 21, 202350 kt wind · 1 event here
• Flash Flood, July 9, 20232 events here
• Flash Flood, July 8, 20231 event here
• Tornado, June 26, 2023EF0 · 3 events here
• Flash Flood, June 26, 20232 events here
• Flash Flood, June 23, 20231 event here
• Dense Fog, April 16, 20231 event here
• Dense Fog, December 31, 20221 event here
• Coastal Flood, December 23, 20221 event here
• Extreme Cold/Wind Chill, December 23, 20221 event here
• Winter Weather, December 23, 20221 event here
• Dense Fog, November 4, 20221 event here
• Dense Fog, October 25, 20221 event here
• Excessive Heat, August 9, 20221 event here
• Thunderstorm Wind, July 28, 202250 kt wind · 2 events here
• Thunderstorm Wind, June 14, 202250 kt wind · 1 event here
• Flash Flood, June 9, 20221 event here
• Hail, May 20, 20221.5 in hail · 10 events here
• Winter Storm, March 12, 20221 event here
• Thunderstorm Wind, March 7, 202260 kt wind · 1 event here
• Ice Storm, February 24, 20221 event here
• Thunderstorm Wind, February 18, 202250 kt wind · 1 event here
• Winter Weather, February 13, 20221 event here
• Winter Storm, January 28, 20221 event here
• Winter Storm, January 16, 20221 event here
• Winter Weather, January 6, 20221 event here
• Winter Weather, January 5, 20221 event here
• Coastal Flood, October 28, 20212 events here
• Thunderstorm Wind, September 28, 202150 kt wind · 1 event here
• Flash Flood, September 23, 20219 events here
• Thunderstorm Wind, September 23, 202155 kt wind · 1 event here
• Flash Flood, September 1, 2021$30 million · 2 events here
• Flash Flood, August 28, 20211 event here
• Flash Flood, August 18, 20211 event here
• Thunderstorm Wind, August 11, 202155 kt wind · 3 events here
• Excessive Heat, August 11, 20211 event here
• Thunderstorm Wind, August 10, 202150 kt wind · 8 events here
• Hail, July 21, 20211.25 in hail · 1 event here
• Flash Flood, July 12, 20211 event here
• Hail, July 8, 20211 in hail · 6 events here
• Thunderstorm Wind, June 30, 202150 kt wind · 1 event here
• Excessive Heat, June 29, 20211 event here
• Hail, June 14, 20211 in hail · 6 events here
• Flash Flood, June 14, 20211 event here
• Flash Flood, June 8, 20211 event here
• Thunderstorm Wind, June 3, 202150 kt wind · 1 event here
• High Wind, April 30, 202153 kt wind · 1 event here
• Thunderstorm Wind, April 29, 202150 kt wind · 3 events here
• Thunderstorm Wind, March 28, 202150 kt wind · 9 events here
• Winter Weather, February 22, 20211 event here
• Winter Storm, February 18, 20211 event here
• Winter Weather, February 13, 20211 event here
• Winter Weather, February 10, 20211 event here
• Winter Storm, February 7, 20211 event here
• Winter Storm, February 1, 20211 event here
• Winter Weather, January 31, 20211 event here
• Winter Storm, December 16, 20201 event here
• Tornado, November 30, 2020EF0 · 4 events here
• Thunderstorm Wind, November 15, 202070 kt wind · 3 events here
• Hail, August 28, 202060 kt wind · 5 events here
• Flash Flood, August 12, 20201 event here
• Flash Flood, August 7, 202050 kt wind · 11 events here
• Tornado, August 4, 2020EF2 · 12 events here
• Flash Flood, July 10, 202010 events here
• Thunderstorm Wind, June 4, 202050 kt wind · 5 events here
• Hail, June 3, 20201 death · 72 kt wind · 16 events here
• High Wind, April 30, 202052 kt wind · 1 event here
• Thunderstorm Wind, April 9, 202060 kt wind · 1 event here
• Thunderstorm Wind, March 3, 202055 kt wind · 1 event here
• High Wind, February 7, 202052 kt wind · 1 event here
• Thunderstorm Wind, February 7, 202065 kt wind · 10 events here
• Winter Weather, January 18, 20201 event here
• Tornado, October 31, 20193 injured · EF2 · 9 events here
• Flash Flood, August 14, 20192 events here
• Hail, August 7, 201970 kt wind · 1 event here
• Flash Flood, August 7, 20199 events here
• Flash Flood, July 31, 20191 event here
• Thunderstorm Wind, July 22, 201970 kt wind · 2 events here
• Thunderstorm Wind, July 17, 201950 kt wind · 1 event here
• Flash Flood, July 11, 20192 events here
• Thunderstorm Wind, July 6, 201950 kt wind · 1 event here
• Flash Flood, July 4, 20191 event here
• Thunderstorm Wind, July 2, 201955 kt wind · 4 events here
• Hail, June 29, 20191 in hail · 5 events here
• Flash Flood, June 20, 20191 event here
• Flash Flood, June 19, 20192 events here
• Flash Flood, June 13, 20191 event here
• Hail, June 2, 20191 in hail · 5 events here
• Thunderstorm Wind, April 26, 201961 kt wind · 2 events here
• Thunderstorm Wind, April 15, 201955 kt wind · 1 event here
• Winter Storm, March 3, 20191 event here
• Winter Weather, March 1, 20191 event here
• High Wind, February 24, 201951 kt wind · 1 event here
• Winter Storm, February 20, 20191 event here
• Winter Storm, February 11, 20191 event here
• Winter Weather, February 10, 20191 event here
• Winter Weather, January 12, 20191 event here
• Coastal Flood, November 25, 20181 event here
• Winter Storm, November 15, 20181 event here
• Coastal Flood, September 10, 20181 event here
• Flash Flood, August 31, 20181 event here
• Flash Flood, August 13, 201852 kt wind · 5 events here
• Flash Flood, August 11, 201850 kt wind · 1 event here
• Flash Flood, July 3, 201852 kt wind · 1 event here
• Excessive Heat, July 1, 20181 event here
• Flash Flood, June 10, 20181 event here
• Flash Flood, May 15, 20181 event here
• Flash Flood, April 16, 20182 events here
• Winter Storm, March 21, 20181 event here
• Winter Storm, March 6, 20181 event here
• Winter Storm, March 2, 20181 injured · 54 kt wind · 2 events here
• Winter Storm, February 17, 20181 event here
• Winter Storm, January 4, 20181 event here
• Winter Storm, December 9, 20171 event here
• Strong Wind, October 24, 20171 event here
• Flood, September 16, 20171 event here
• Flood, August 19, 201752 kt wind · 3 events here
• Flash Flood, July 22, 201752 kt wind · 6 events here
• Thunderstorm Wind, June 21, 201763 kt wind · 1 event here
• Lightning, March 28, 2017$1,000 · 1 event here
• Blizzard, March 14, 20171 event here
• Winter Weather, March 10, 20171 event here
• High Wind, March 2, 20171 injured · 50 kt wind · 2 events here
• Hail, February 25, 20171 in hail · 1 event here
• Thunderstorm Wind, February 12, 201752 kt wind · 1 event here
• High Wind, January 23, 2017$10 · 50 kt wind · 1 event here
• Winter Weather, January 7, 20171 event here
• Winter Weather, January 5, 20171 event here
• Winter Weather, December 17, 20161 event here
• Winter Weather, December 15, 20161 event here
• Astronomical Low Tide, December 15, 20161 event here
• Thunderstorm Wind, October 30, 201652 kt wind · 1 event here
• Flood, July 18, 201661 kt wind · 2 events here
• Thunderstorm Wind, June 8, 201652 kt wind · 3 events here
• Thunderstorm Wind, June 5, 2016$4,000 · 50 kt wind · 1 event here
• Winter Weather, April 9, 20161 event here
• Hail, April 2, 201652 kt wind · 1 event here
• Winter Weather, February 15, 20161 event here
• Astronomical Low Tide, February 14, 20161 event here
• Extreme Cold/Wind Chill, February 13, 20161 event here
• Heavy Snow, February 9, 20161 event here
• Winter Weather, February 5, 20161 event here
• Winter Storm, January 22, 20161 event here
• Strong Wind, October 2, 2015$1,000 · 1 event here
• Flash Flood, September 10, 20151 event here
• Excessive Heat, July 19, 20151 event here
• Thunderstorm Wind, July 15, 201550 kt wind · 1 event here
• Flash Flood, July 15, 20151 event here
• Tornado, July 9, 2015$50,000 · EF1 · 1 event here
• Flash Flood, June 30, 20151 event here
• Tornado, June 30, 2015$5,000 · EF1 · 1 event here
• Thunderstorm Wind, June 23, 2015$4.9 million · 74 kt wind · 12 events here
• Heat, June 23, 20151 event here
• Flash Flood, June 1, 20151 event here
• Thunderstorm Wind, May 27, 20151 injured · 52 kt wind · 1 event here
• Flood, April 20, 20151 event here
• Heavy Snow, March 20, 20151 event here
• Heavy Snow, March 4, 20151 event here
• Winter Weather, March 3, 20151 event here
• Winter Storm, March 1, 20151 event here
• Extreme Cold/Wind Chill, February 24, 20151 event here
• Winter Storm, February 21, 20151 event here
• Astronomical Low Tide, February 20, 20151 event here
• Extreme Cold/Wind Chill, February 19, 20151 event here
• Heavy Snow, February 16, 20151 event here
• Extreme Cold/Wind Chill, February 15, 20151 event here
• Extreme Cold/Wind Chill, February 15, 20151 event here
• High Wind, February 15, 20151 injured · $200,000 · 53 kt wind · 1 event here
• Astronomical Low Tide, February 15, 20151 event here
• Winter Weather, February 14, 20151 event here
• Extreme Cold/Wind Chill, February 13, 20151 event here
• Winter Weather, February 8, 20151 event here
• Strong Wind, February 2, 20151 death · $20,000 · 1 event here
• Winter Storm, February 1, 20151 event here
• Winter Weather, January 25, 20151 event here
• Winter Storm, January 23, 20151 event here
• Winter Weather, January 21, 20151 event here
• Flood, January 18, 20151 event here
• Winter Weather, January 18, 20152 deaths · 20 injured · 1 event here
• Winter Weather, January 11, 20151 event here
• Astronomical Low Tide, January 10, 20151 event here
• Extreme Cold/Wind Chill, January 7, 20151 event here

Earlier years, state by state:

• 2015
• 2014
• 2013
• 2012
• 2011
• 2010
• 2009
• 2008
• 2007
• 2006
• 2005
• 2004
• 2003
• 2002
• 2001
• 2000
• 1999
• 1998
• 1997
• 1996
• 1995
• 1994
• 1993
• 1992
• 1991
• 1990
• 1989
• 1988
• 1987
• 1986
• 1985
• 1984
• 1983
• 1980
• 1977
• 1976
• 1974
• 1973
• 1972
• 1971
• 1970
• 1969
• 1968
• 1967
• 1961
• 1959
• 1958
• 1957

Tornadoes in Delaware CountyEvery warning in Delaware County since 1986Every county in Pennsylvania

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.