Alert archive / Pennsylvania / Delaware County / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Delaware County, Pennsylvania, 2026
39 severe thunderstorm warnings in 2026. An alert counts here when it covered this county. The archive of severe thunderstorm 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.
- Severe Thunderstorm Warnings
- 39
- Busiest month
- July16 severe thunderstorm warnings
- Busiest day
- May 20, 20265 severe thunderstorm 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 |
|---|---|---|---|
| Mar 11, 8:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Mar 16, 10:32 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| May 20, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| May 20, 5:10 PM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| May 20, 5:29 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| May 20, 6:01 PM EDT | Severe Thunderstorm Warning | PHI | 44 min |
| May 20, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jun 6, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Jun 11, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Jun 14, 9:54 PM EDT | Severe Thunderstorm Warning | PHI | 51 min |
| Jun 14, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Jun 14, 10:44 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jun 22, 4:15 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jun 22, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Jun 22, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Jul 4, 8:25 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Jul 4, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jul 4, 8:59 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jul 5, 10:05 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Jul 5, 10:37 PM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| Jul 5, 11:30 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jul 9, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jul 11, 2:44 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jul 18, 5:45 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jul 21, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Jul 21, 3:58 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jul 21, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jul 21, 4:43 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jul 21, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jul 28, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| Jul 28, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | 54 min |
| Aug 7, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Aug 8, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| Aug 10, 4:46 PM EDT | Severe Thunderstorm Warning | PHI | 20 min |
| Aug 17, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | 32 min |
| Aug 20, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 20, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Sep 1, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Sep 1, 8:17 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
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.