This alert expired on 25 May 2026 at 22:15 UTC. It is kept here as a record.
It is the 23rd strongest of the 61 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 25 at 5:16PM EDT until May 25 at 6:15PM EDT by NWS Wakefield VA
An estimated 919,695 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 7, 2026 · score 41 · 8.1 km
- June 23, 2026 · score 52 · 11.2 km
- July 8, 2026 · score 52 · 12.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 37.2086, -76.6029 |
| Nearest City | Williamsburg (12 km) |
| Population Exposed | 919.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-25T21:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1b0f6681d33c54dfcc4b3bff8fd90c7fe62847a0.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | York River; James River from Jamestown to the James River Bridge |
| Headline | Special Marine Warning issued May 25 at 5:16PM EDT until May 25 at 6:15PM EDT by NWS Wakefield VA |
| Expires | 2026-05-25T18:15:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 48/100, near Williamsburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.