TornadoLookup
HomeStatesPennsylvania

Delaware storm history

Storm events recorded in Delaware, Pennsylvania between 1950 and 2025.

1,334
Total events
5
Tornadoes
62
Hail
253
Floods
25
Deaths
$90.9M
Property damage

Most significant events

Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.

June 3, 2020 · Delaware, Pennsylvania
Thunderstorm Wind Thunderstorm Wind1 death
A tree fell on a power line that fell on a house near Wallingford, which then started a house fire, killing one individual. Time estimated from radar.
February 2, 2015 · Delaware, Pennsylvania
Strong Wind Strong Wind1 death
January 18, 2015 · Delaware, Pennsylvania
Winter Weather Winter Weather2 deaths, 20 injuries
January 22, 2014 · Delaware, Pennsylvania
Cold/Wind Chill Cold/Wind Chill3 deaths
January 21, 2014 · Delaware, Pennsylvania
Heavy Snow Heavy Snow1 death
July 16, 2010 · Delaware, Pennsylvania
Excessive Heat Excessive Heat2 deaths
December 19, 2009 · Delaware, Pennsylvania
Heavy Snow Heavy Snow1 death
June 7, 2008 · Delaware, Pennsylvania
Excessive Heat Excessive Heat1 death, 22 injuries
June 2, 2006 · Delaware, Pennsylvania
Lightning Lightning1 death
October 14, 2003 · Delaware, Pennsylvania
Thunderstorm Wind Thunderstorm Wind1 death, 1 injury
September 16, 1999 · Delaware, Pennsylvania
Flash Flood Flash Flood1 death, 14 injuries, $15.0M damage
July 23, 1999 · Delaware, Pennsylvania
Heat Heat1 death
July 4, 1999 · Delaware, Pennsylvania
Heat Heat7 deaths
July 13, 1997 · Delaware, Pennsylvania
Heat Heat1 death
January 7, 1996 · Delaware, Pennsylvania
Blizzard Blizzard1 death, $1.4M damage
May 15, 2004 · Delaware, Pennsylvania
Thunderstorm Wind Thunderstorm Wind8 injuries
January 13, 1999 · Delaware, Pennsylvania
Winter Storm Winter Storm12 injuries
September 1, 2021 · Delaware, Pennsylvania
Flash Flood Flash Flood$15.0M damage
Widespread flash flooding occurred in Delaware County with numerous road closures. Many creeks in the county overflowed their banks, including Chester Creek, Ridley Creek, Crum Creek and Cobbs Creek.
September 1, 2021 · Delaware, Pennsylvania
Flash Flood Flash Flood$15.0M damage
Widespread flash flooding occurred in Delaware County with numerous road closures. Many creeks in the county overflowed their banks, including Chester Creek, Ridley Creek, Crum Creek and Cobbs Creek.
June 23, 2015 · Delaware, Pennsylvania
Thunderstorm Wind Thunderstorm Wind$2.5M damage
Chester City was also hard hit by the powerful macroburst associated with the line of severe thunderstorms. About twenty homes and buildings were condemned because of wind damage including fallen trees. Buildings along the Avenue Of The States as well as trees within city parks w…
October 1, 2010 · Delaware, Pennsylvania
Flood Flood$5.0M damage
Flooding along the Darby Creek in Darby Borough was described as the heaviest since Hurricane Floyd. Dozens of families were evacuated and sought shelter at the Mercy Fitzgerald Hospital. People were rescued from the second floor windows on Springfield Road. Water was six to seve…
February 9, 2010 · Delaware, Pennsylvania
Winter Storm Winter Storm$2.5M damage
August 1, 2004 · Delaware, Pennsylvania
Flash Flood Flash Flood$10.0M damage
September 18, 2003 · Delaware, Pennsylvania
High Wind High Wind$5.2M damage
September 27, 1993 · Delaware, Pennsylvania
Tornado F1 Tornado$5.0M damage
A funnel cloud was first spotted by two police officers about 700 feet above the ground in Media. The tornado then touched down 1 mile north of the intersection of the US Route 1 bypass and Route 320. It moved northeast toward Drexel Hill and northern Springfield where apparently…
December 29, 2025 · Delaware, Pennsylvania
High Wind High Wind
The ASOS at Philadelphia International Airport reported a gust of 60 mph.
December 26, 2025 · Delaware, Pennsylvania
Winter Weather Winter Weather
Snow and sleet totals ranged from a trace to near 0.5. The highest report was 0.4 from Swarthmore. A light glaze of freezing rain/freezing drizzle also occurred across the city. As much as 0.10 of ice was reported from Chads Ford Township.
December 19, 2025 · Delaware, Pennsylvania
High Wind High Wind
The ASOS at Philadelphia International Airport reported a wind gust of 62 mph.
December 13, 2025 · Delaware, Pennsylvania
Winter Storm Winter Storm
Snowfall totals ranged from 5-7. The highest report was 7.5 from Broomall.
October 6, 2025 · Delaware, Pennsylvania
Dense Fog Dense Fog
Several hours of dense fog was observed at Philadelphia International Airport.
July 31, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported in Boothwyn. Road flooding was reported on Larkin Road.
July 29, 2025 · Delaware, Pennsylvania
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 105 degrees.
July 25, 2025 · Delaware, Pennsylvania
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 109 degrees, while at Wilmington Airport it reached 110 degrees.
July 25, 2025 · Delaware, Pennsylvania
Thunderstorm Wind Thunderstorm Wind
Trees and wires down. Time estimated from radar.
July 17, 2025 · Delaware, Pennsylvania
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 106 degrees, and at Wilmington Airport it reached 105 degrees.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported at Spring Valley Rd and Brinton Lake Rd. Vehicles were submerged.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported at the Baltimore Pike and Brinton Lake Rd intersection. Vehicles were submerged.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along US 202.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along portions of the Baltimore Pike. Multiple vehicles were stranded.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Multiple water rescues were needed in Glen Mills due to flash flooding.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported at the intersection of Union Ave and Bartram Ave stranding a vehicle.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along West 2nd Street stranding a vehicle.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along the southbound lanes on I-95 between Exit 9B/9A.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported at the intersection of Post Road and Price Street stranding a vehicle.
July 9, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported across portions of Ridley Park.
July 8, 2025 · Delaware, Pennsylvania
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport and Wilmington Airport reached 105 degrees.
July 8, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along several roadways in and around Middletown Township.
July 8, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported along the northbound lanes of I-95 at Exit 4.
July 8, 2025 · Delaware, Pennsylvania
Flash Flood Flash Flood
Flash flooding was reported on PA 291. Fire personnel were called to be onsite.
June 23, 2025 · Delaware, Pennsylvania
Excessive Heat Excessive Heat
Three days of high heat and humidity brought extreme heat indices. The heat index peaked at 109 degrees on June 23rd, 107 degrees on June 24th and 106 degrees on June 25th, all measured at Philadelphia International Airport.

Events by year

YearEventsTornadoes
2025620
2024210
2023260
2022300
2021680
2020830
2019571
2018220
2017230
2016180
2015520
2014600
2013470
2012420
2011510
2010411
2009420
2008370
2007480
2006490
2005410
2004380
2003490
2002390
2001320
2000360
1999550
1998410
1997260
1996290
199550
199420
199311
199261
199180
199020
198950
198860
198740
198610
198530
198410
198310
198020
197710
197630
197410
197311
197220
197110
197010
196930
196820
196710
196110
195910
195820
195720