Alert archive / Delaware / 2025
Weather alerts in Delaware, May 2025
38 weather alerts in May 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in May 2025. Tap one for its archive.
- Alerts
- 38
- Warnings
- 18
- Watches
- 5
- Advisories
- 8
- Busiest day
- May 16, 202514 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| May 3, 5:51 PM EDT | Severe Thunderstorm Watch | SPC | New Castle | 4 hr |
| May 3, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 44 min |
| May 3, 7:32 PM EDT | Flash Flood Warning | PHI | New Castle | 3 hr |
| May 6, 12:01 PM EDT | Mesoscale Discussion | SPC | New Castle | 119 min |
| May 12, 5:36 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle | 36 hr |
| May 15, 9:34 PM EDT | Dense Fog Advisory | PHI | Kent, New Castle, Sussex | 12 hr |
| May 16, 9:46 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 119 min |
| May 16, 10:06 AM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 6 hr |
| May 16, 11:16 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 59 min |
| May 16, 11:32 AM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| May 16, 12:11 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| May 16, 12:20 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 40 min |
| May 16, 1:52 PM EDT | Tornado Warning | PHI | Sussex | 38 min |
| May 16, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 42 min |
| May 16, 2:23 PM EDT | Tornado Warning | PHI | Sussex | 52 min |
| May 16, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 3 hr |
| May 16, 6:13 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 92 min |
| May 16, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 70 min |
| May 16, 6:56 PM EDT | Tornado Warning | PHI | Sussex | 34 min |
| May 21, 3:54 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle | 7 hr |
| May 22, 3:59 AM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 17 hr |
| May 23, 4:54 AM EDT | Coastal Flood Advisory | PHI | Sussex | 9 hr |
| May 26, 3:05 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 14 hr |
| May 28, 4:51 PM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 9 hr |
| May 30, 2:13 AM EDT | Flood Watch | PHI | New Castle | 28 hr |
| May 30, 3:49 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 116 min |
| May 30, 5:01 PM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 7 hr |
| May 30, 8:37 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 113 min |
| May 30, 9:04 PM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 10 hr |
| May 30, 10:26 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| May 30, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 49 min |
| May 30, 10:55 PM EDT | Tornado Warning | PHI | New Castle | 22 min |
| May 31, 11:52 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| May 31, 1:17 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 43 min |
| May 31, 1:30 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 45 min |
| May 31, 1:42 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 48 min |
| May 31, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 45 min |
| May 31, 2:26 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 49 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 11 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 7 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flood Watch | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 6 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
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. Rebuilt daily.