This alert expired on 10 June 2026 at 22:00 UTC. It is kept here as a record.
It is the 89th strongest of the 163 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 27 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 4:37PM EDT until June 10 at 6:00PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,979,523 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 18, 2026 · score 52 · 1.6 km
- March 12, 2026 · score 52 · 4.7 km
- July 6, 2026 · score 52 · 8.8 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 80 % 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 | 80% |
| Coordinates | 39.2201, -76.2247 |
| Nearest City | Middle River (22 km) |
| Population Exposed | 2.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T20:37:00.000Z |
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; Chester River to Queenstown MD; Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Patapsco River including Baltimore Harbor |
| Headline | Special Marine Warning issued June 10 at 4:37PM EDT until June 10 at 6:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-10T18:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a08eff9e1d50a2cdaab652e6f60af851c518b47a.001.1","noaa_urn:oid:2.49.0.1.840.0.0afabf91218b35b445cc5ccb42abc7463ddc9704.001.1"] |
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 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 Middle River (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.