State: PATotal alerts: 1Updated: Oct 12, 2026 3:54am EDT
Flash Flood Warning
Area Delaware, PA; Philadelphia, PA
Flash Flood Warning issued October 12 at 2:38AM EDT until October 12 at 5:45AM EDT by NWS Mount Holly NJ
FFWPHI
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
East Central Delaware County in southeastern Pennsylvania...
Southern Philadelphia County in southeastern Pennsylvania...
* Until 545 AM EDT.
* At 238 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Philadelphia, Yeadon, Folcroft, Swarthmore, East Lansdowne, South
Philadelphia, Roxborough, Morris Park, Center City, Darby Township,
Philadelphia International Airport and Kensington.
This includes the following highways...
Interstate 476 in Pennsylvania between mile markers 6 and 7.
Interstate 76 in Pennsylvania between mile markers 340 and 351.
Interstate 95 in Pennsylvania between mile markers 8 and 30.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Three Springs.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.