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.

IssuedProductOfficeCountiesLasted
May 3, 5:51 PM EDTSevere Thunderstorm WatchSPCNew Castle4 hr
May 3, 6:16 PM EDTSevere Thunderstorm WarningPHINew Castle44 min
May 3, 7:32 PM EDTFlash Flood WarningPHINew Castle3 hr
May 6, 12:01 PM EDTMesoscale DiscussionSPCNew Castle119 min
May 12, 5:36 PM EDTCoastal Flood AdvisoryPHIKent, New Castle36 hr
May 15, 9:34 PM EDTDense Fog AdvisoryPHIKent, New Castle, Sussex12 hr
May 16, 9:46 AM EDTMesoscale DiscussionSPCKent, New Castle, Sussex119 min
May 16, 10:06 AM EDTSevere Thunderstorm WatchSPCKent, New Castle, Sussex6 hr
May 16, 11:16 AM EDTSevere Thunderstorm WarningPHINew Castle59 min
May 16, 11:32 AM EDTFlash Flood WarningPHINew Castle4 hr
May 16, 12:11 PM EDTMesoscale DiscussionSPCKent, New Castle2 hr
May 16, 12:20 PM EDTSevere Thunderstorm WarningPHINew Castle40 min
May 16, 1:52 PM EDTTornado WarningPHISussex38 min
May 16, 2:18 PM EDTSevere Thunderstorm WarningPHISussex42 min
May 16, 2:23 PM EDTTornado WarningPHISussex52 min
May 16, 4:36 PM EDTSevere Thunderstorm WatchSPCKent, New Castle, Sussex3 hr
May 16, 6:13 PM EDTMesoscale DiscussionSPCKent, New Castle, Sussex92 min
May 16, 6:35 PM EDTSevere Thunderstorm Warning Considerable damage threatPHIKent, New Castle, Sussex70 min
May 16, 6:56 PM EDTTornado WarningPHISussex34 min
May 21, 3:54 PM EDTCoastal Flood AdvisoryPHIKent, New Castle7 hr
May 22, 3:59 AM EDTCoastal Flood AdvisoryPHIKent, Sussex17 hr
May 23, 4:54 AM EDTCoastal Flood AdvisoryPHISussex9 hr
May 26, 3:05 PM EDTCoastal Flood AdvisoryPHIKent, New Castle, Sussex14 hr
May 28, 4:51 PM EDTCoastal Flood AdvisoryPHIKent, Sussex9 hr
May 30, 2:13 AM EDTFlood WatchPHINew Castle28 hr
May 30, 3:49 PM EDTMesoscale DiscussionSPCKent, New Castle, Sussex116 min
May 30, 5:01 PM EDTTornado WatchSPCKent, New Castle, Sussex7 hr
May 30, 8:37 PM EDTMesoscale DiscussionSPCKent, New Castle113 min
May 30, 9:04 PM EDTWind AdvisoryPHIKent, New Castle, Sussex10 hr
May 30, 10:26 PM EDTFlash Flood WarningPHINew Castle4 hr
May 30, 10:26 PM EDTSevere Thunderstorm WarningPHINew Castle49 min
May 30, 10:55 PM EDTTornado WarningPHINew Castle22 min
May 31, 11:52 AM EDTMesoscale DiscussionSPCKent, New Castle, Sussex2 hr
May 31, 1:17 PM EDTSevere Thunderstorm WarningPHIKent43 min
May 31, 1:30 PM EDTSevere Thunderstorm WarningPHISussex45 min
May 31, 1:42 PM EDTSevere Thunderstorm WarningPHIKent, Sussex48 min
May 31, 2:00 PM EDTSevere Thunderstorm WarningPHIKent, Sussex45 min
May 31, 2:26 PM EDTSevere Thunderstorm WarningPHISussex49 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

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.