This alert expired on 8 July 2026 at 00:30 UTC. It is kept here as a record.
It is the 25th strongest of the 40 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 4 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 7 at 7:29PM EDT until July 7 at 8:30PM EDT by NWS Wakefield VA
An estimated 585,489 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 28, 2026 · score 72 · 6.9 km
- June 23, 2026 · score 52 · 7.9 km
- May 25, 2026 · score 48 · 8.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 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) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 37.1844, -76.6894 |
| Nearest City | Williamsburg (10 km) |
| Population Exposed | 585.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-07T23:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8fdcfc74a5e44e075b566345f7563d7c80ad7950.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | James River from Jamestown to the James River Bridge |
| Headline | Special Marine Warning issued July 7 at 7:29PM EDT until July 7 at 8:30PM EDT by NWS Wakefield VA |
| Expires | 2026-07-07T20:30:00-04:00 |
| 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 41/100, near Williamsburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.