This alert is in force until 31 August 2026, 21:30 UTC.
It is the 118th strongest of the 214 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 28 August 2026.
What the source measured
NOAA reported: Special Marine Warning issued August 31 at 4:36PM EDT until August 31 at 5:30PM EDT by NWS Wakefield VA
An estimated 1,763,731 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 29, 2026 · score 76 · 1.0 km
- June 23, 2026 · score 52 · 1.6 km
- August 28, 2026 · score 46 · 5.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 81 % 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) | 46 / 100 |
| Our confidence | 81% |
| Coordinates | 36.9155, -76.2500 |
| Nearest City | Norfolk (8 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T20:36:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.fdb1a308bb924795f878650a827afdf9c6a7841e.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay from New Point Comfort to Little Creek VA; Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel; James River from JRB to HRBT, Including the Elizabeth River |
| Headline | Special Marine Warning issued August 31 at 4:36PM EDT until August 31 at 5:30PM EDT by NWS Wakefield VA |
| Expires | 2026-08-31T17:30:00-04:00 |
| 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 46/100, near Norfolk (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.