This alert expired on 2 August 2026 at 22:45 UTC. It is kept here as a record.
No stronger detection stands among the 66 recorded within 20 km of this point since 17 March 2026 — 25 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 2 at 5:07PM EDT until August 2 at 6:45PM EDT by NWS Baltimore MD/Washington DC
Nearby, since 17 March 2026
- June 13, 2026 · score 22 · 12.3 km
- July 6, 2026 · score 22 · 16.4 km
- July 21, 2026 · score 16 · 20.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 66 % 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) | 22 / 100 |
| Our confidence | 66% |
| Coordinates | 37.9827, -76.3957 |
| Nearest City | Salisbury (81 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-02T21:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.11ddbfcab6f4b6360a1f4edd603d41b7 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; 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 JRB to HRBT, Including the Elizabeth River; Coastal waters from Parramore Island to Cape Charles Light VA out 20 NM |
| Headline | Special Marine Warning issued August 2 at 5:07PM EDT until August 2 at 6:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-08-02T18:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.11ddbfcab6f4b6360a1f4edd603d41b741b18450.001.1","noaa_urn:oid:2.49.0.1.840.0.c700a3dfa89a6e8501a81f23f451887325df860f.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 41 |
| Iem Unit | mph |
| Iem City | 8 SSE Oakley |
| Iem County | ANZ537 |
| Iem State | MD |
| Iem Wfo | LWX |
| MergedSources | [{"id":"iem_M_38.170_-76.700_1785697320000","source":"iem","severity":"low","severityValue":25,"timestamp":1785697320000,"latitude":38.17,"longitude":-76.7}] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.