This alert expired on 4 September 2026 at 08:30 UTC. It is kept here as a record.
It is the 44th strongest of the 67 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued September 4 at 3:06AM EDT until September 4 at 4:30AM EDT by NWS Wakefield VA
Nearby, since 17 March 2026
- July 27, 2026 · score 22 · 8.3 km
- September 3, 2026 · score 16 · 15.6 km
- May 27, 2026 · score 22 · 19.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 67% |
| Coordinates | 37.6184, -75.7090 |
| Nearest City | Salisbury (83 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-04T07:06:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5407af3d6c43cbb8cf5ade3ebea6647f3199ccea.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Fenwick Island DE to Chincoteague VA out 20 NM; Coastal waters from Chincoteague to Parramore Island VA out 20 NM; Coastal waters from Parramore Island to Cape Charles Light VA out 20 NM; Waters from Fenwick Island DE to Chintoteague VA from 20 to 60 NM; Waters from Chincoteague VA to Parramore Island VA from 20 to 60 NM; Waters from Parramore Island VA to Cape Charles Light VA from 20 to 60 NM; 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; Rappahannock River from Urbanna to Windmill Point |
| Headline | Special Marine Warning issued September 4 at 3:06AM EDT until September 4 at 4:30AM EDT by NWS Wakefield VA |
| Expires | 2026-09-04T04:30:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5407af3d6c43cbb8cf5ade3ebea6647f3199ccea.001.1","noaa_urn:oid:2.49.0.1.840.0.047b3287b5db65689d7a062e80fd9118a5786978.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 44 |
| Iem Unit | MPH |
| Iem City | Wachapreague |
| Iem County | Accomack |
| Iem State | VA |
| Iem Wfo | AKQ |
| Iem Remark | The Wachapreague mesonet (XWAC) measured a gust to 38 kt (44 mph). |
| MergedSources | [{"id":"iem_M_37.240_-76.020_1788505740000","source":"iem","severity":"low","severityValue":25,"timestamp":1788505740000,"latitude":37.24,"longitude":-76.02},{"id":"iem_M_37.650_-75.880_1788503280000","source":"iem","severity":"low","severityValue":25,"timestamp":1788503280000,"latitude":37.65,"longitude":-75.88},{"id":"iem_M_37.650_-75.880_1788502980000","source":"iem","severity":"low","severityValue":25,"timestamp":1788502980000,"latitude":37.65,"longitude":-75.88},{"id":"iem_M_38.040_-76.320_1788496380000","source":"iem","severity":"low","severityValue":25,"timestamp":1788496380000,"latitude":38.04,"longitude":-76.32},{"id":"iem_M_37.600_-75.690_1788502680000","source":"iem","severity":"low","severityValue":25,"timestamp":1788502680000,"latitude":37.6,"longitude":-75.69}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.