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.
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.
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.
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.
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…
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…
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…
High Wind High Wind
The ASOS at Philadelphia International Airport reported a gust of 60 mph.
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.
High Wind High Wind
The ASOS at Philadelphia International Airport reported a wind gust of 62 mph.
Winter Storm Winter Storm
Snowfall totals ranged from 5-7. The highest report was 7.5 from Broomall.
Dense Fog Dense Fog
Several hours of dense fog was observed at Philadelphia International Airport.
Flash Flood Flash Flood
Flash flooding was reported in Boothwyn. Road flooding was reported on Larkin Road.
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 105 degrees.
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 109 degrees, while at Wilmington Airport it reached 110 degrees.
Thunderstorm Wind Thunderstorm Wind
Trees and wires down. Time estimated from radar.
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport reached 106 degrees, and at Wilmington Airport it reached 105 degrees.
Flash Flood Flash Flood
Flash flooding was reported at Spring Valley Rd and Brinton Lake Rd. Vehicles were submerged.
Flash Flood Flash Flood
Flash flooding was reported at the Baltimore Pike and Brinton Lake Rd intersection. Vehicles were submerged.
Flash Flood Flash Flood
Flash flooding was reported along US 202.
Flash Flood Flash Flood
Flash flooding was reported along portions of the Baltimore Pike. Multiple vehicles were stranded.
Flash Flood Flash Flood
Multiple water rescues were needed in Glen Mills due to flash flooding.
Flash Flood Flash Flood
Flash flooding was reported at the intersection of Union Ave and Bartram Ave stranding a vehicle.
Flash Flood Flash Flood
Flash flooding was reported along West 2nd Street stranding a vehicle.
Flash Flood Flash Flood
Flash flooding was reported along the southbound lanes on I-95 between Exit 9B/9A.
Flash Flood Flash Flood
Flash flooding was reported at the intersection of Post Road and Price Street stranding a vehicle.
Flash Flood Flash Flood
Flash flooding was reported across portions of Ridley Park.
Excessive Heat Excessive Heat
The heat index at Philadelphia International Airport and Wilmington Airport reached 105 degrees.
Flash Flood Flash Flood
Flash flooding was reported along several roadways in and around Middletown Township.
Flash Flood Flash Flood
Flash flooding was reported along the northbound lanes of I-95 at Exit 4.
Flash Flood Flash Flood
Flash flooding was reported on PA 291. Fire personnel were called to be onsite.
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
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 62 | 0 |
| 2024 | 21 | 0 |
| 2023 | 26 | 0 |
| 2022 | 30 | 0 |
| 2021 | 68 | 0 |
| 2020 | 83 | 0 |
| 2019 | 57 | 1 |
| 2018 | 22 | 0 |
| 2017 | 23 | 0 |
| 2016 | 18 | 0 |
| 2015 | 52 | 0 |
| 2014 | 60 | 0 |
| 2013 | 47 | 0 |
| 2012 | 42 | 0 |
| 2011 | 51 | 0 |
| 2010 | 41 | 1 |
| 2009 | 42 | 0 |
| 2008 | 37 | 0 |
| 2007 | 48 | 0 |
| 2006 | 49 | 0 |
| 2005 | 41 | 0 |
| 2004 | 38 | 0 |
| 2003 | 49 | 0 |
| 2002 | 39 | 0 |
| 2001 | 32 | 0 |
| 2000 | 36 | 0 |
| 1999 | 55 | 0 |
| 1998 | 41 | 0 |
| 1997 | 26 | 0 |
| 1996 | 29 | 0 |
| 1995 | 5 | 0 |
| 1994 | 2 | 0 |
| 1993 | 1 | 1 |
| 1992 | 6 | 1 |
| 1991 | 8 | 0 |
| 1990 | 2 | 0 |
| 1989 | 5 | 0 |
| 1988 | 6 | 0 |
| 1987 | 4 | 0 |
| 1986 | 1 | 0 |
| 1985 | 3 | 0 |
| 1984 | 1 | 0 |
| 1983 | 1 | 0 |
| 1980 | 2 | 0 |
| 1977 | 1 | 0 |
| 1976 | 3 | 0 |
| 1974 | 1 | 0 |
| 1973 | 1 | 1 |
| 1972 | 2 | 0 |
| 1971 | 1 | 0 |
| 1970 | 1 | 0 |
| 1969 | 3 | 0 |
| 1968 | 2 | 0 |
| 1967 | 1 | 0 |
| 1961 | 1 | 0 |
| 1959 | 1 | 0 |
| 1958 | 2 | 0 |
| 1957 | 2 | 0 |