This alert is in force until 2 September 2026, 18:45 UTC.
It is the 111th strongest of the 243 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Special Marine Warning issued September 2 at 1:09PM EDT until September 2 at 2:45PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,479,586 people live within 50 km of this point.
Nearby, since 11 March 2026
- August 28, 2026 · score 58 · 0.8 km
- August 27, 2026 · score 66 · 0.8 km
- July 18, 2026 · score 64 · 0.8 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 82 % 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) | 46 / 100 |
| Our confidence | 82% |
| Coordinates | 39.0049, -76.2402 |
| Nearest City | Annapolis (22 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T17:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.fb14344974e2c57a1ce00e797928f9a5c2f9a24d.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay from Pooles Island to Sandy Point MD; 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; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD |
| Headline | Special Marine Warning issued September 2 at 1:09PM EDT until September 2 at 2:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-09-02T14:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fb14344974e2c57a1ce00e797928f9a5c2f9a24d.001.1","noaa_urn:oid:2.49.0.1.840.0.7d357cb96f5059ff10bea53079d1498ef8bf3a3b.001.1"] |
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 near Annapolis?
Calamity.live data shows a weather event with CalamityScore 46/100, near Annapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.