Right now
The most recent data we hold from NOAA arrived 11 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 March 2026 at 03:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 120 detections recorded within 20 km of this point since 17 March 2026.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 8:56PM EDT until March 16 at 11:00PM EDT by NWS Wakefield VA
Nearby, since 17 March 2026
- June 13, 2026 · score 22 · 7.9 km
- July 6, 2026 · score 22 · 9.8 km
- June 14, 2026 · score 22 · 14.3 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 68% |
| Coordinates | 38.1642, -76.3936 |
| Nearest City | St. Charles (68 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-17T00:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.24e087753f07e0c699002ea0bf03fcbf |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay from Smith Point to Windmill Point VA; Chesapeake Bay from Windmill Point to New Point Comfort VA; 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; Rappahannock River from Urbanna to Windmill Point; York River; James River from Jamestown to the James River Bridge; James River from James River Bridge to Hampton Roads Bridge-Tunnel; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Cobb Island MD to Smith Point VA; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; Patuxent River to Broomes Island MD; Tangier Sound and the inland waters surrounding Bloodsworth Island and 2 more areas |
| Headline | Special Marine Warning issued March 16 at 8:56PM EDT until March 16 at 11:00PM EDT by NWS Wakefield VA |
| Expires | 2026-03-16T23:00:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.24e087753f07e0c699002ea0bf03fcbf7e0bb545.001.1","noaa_urn:oid:2.49.0.1.840.0.2eb9b0ee992f49db40c6d81bcb1213d19382b8cc.001.1","noaa_urn:oid:2.49.0.1.840.0.e922c83a7f38068f3e715dc8fd9b04acc82915c5.001.1","noaa_urn:oid:2.49.0.1.840.0.6f06305c73cea93ba0b0c8ba019841752ea2aeef.001.1","noaa_urn:oid:2.49.0.1.840.0.2f1b26b6cb93d13550a8b5948e84341edcf4df7e.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 NNE Mount Landing |
| Spc County | Essex |
| Spc State | VA |
| Spc Comments | Four trees reported down northwest of Tappahannock. Additional reports of wires arcing. (AKQ) |
| MergedSources | [{"id":"spc_wind_38.54_-77.08_142","source":"spc","severity":"medium","severityValue":45,"timestamp":1773711898674,"latitude":38.54,"longitude":-77.08},{"id":"spc_wind_38.27_-77.18_145","source":"spc","severity":"medium","severityValue":45,"timestamp":1773711898674,"latitude":38.27,"longitude":-77.18},{"id":"spc_wind_37.96_-76.91_228","source":"spc","severity":"medium","severityValue":45,"timestamp":1773710040000,"latitude":37.96,"longitude":-76.91}] |
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 8 March 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.
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