Alert archive / Pennsylvania / Delaware County / Flash Flood Warnings
Flash Flood Warnings in Delaware County, Pennsylvania, 2026
35 flash flood warnings in 2026. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.
Delaware County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Flash Flood Warnings
- 35
- Busiest month
- August14 flash flood warnings
- Busiest day
- July 9, 20265 flash flood warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 20, 5:40 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 14, 10:15 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 14, 10:26 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 14, 10:38 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 22, 6:02 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 28, 7:51 PM EDT | Flash Flood Warning | PHI | 114 min |
| Jul 5, 11:00 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 6, 10:15 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 9, 1:37 PM EDT | Flash Flood Warning | PHI | 6 hr |
| Jul 9, 2:00 PM EDT | Flash Flood Warning | PHI | 5 hr |
| Jul 9, 3:01 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 9, 3:38 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 9, 4:30 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 11, 2:46 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 21, 4:31 PM EDT | Flash Flood Warning | PHI | 96 min |
| Jul 21, 4:38 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 27, 3:58 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jul 28, 7:11 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 3, 3:01 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 3, 4:41 AM EDT | Flash Flood Warning | PHI | 2 hr |
| Aug 3, 9:08 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 5, 1:13 PM EDT | Flash Flood Warning | PHI | 5 hr |
| Aug 5, 9:04 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 5, 10:35 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 16, 11:21 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 16, 11:38 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 20, 5:39 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 23, 3:32 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 23, 3:49 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 27, 11:38 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 27, 2:38 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 27, 7:00 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Sep 1, 8:44 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Sep 3, 1:34 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Sep 13, 8:06 AM EDT | Flash Flood Warning | PHI | 4 hr |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.