This alert expired on 16 March 2026 at 21:00 UTC. It is kept here as a record.
It is the 5th strongest of the 169 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 2:57PM EDT until March 16 at 5:00PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,721,792 people live within 50 km of this point.
Nearby, since 11 March 2026
- June 22, 2026 · score 52 · 2.0 km
- July 21, 2026 · score 46 · 3.4 km
- July 28, 2026 · score 76 · 3.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 77 % 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) | 52 / 100 |
| Our confidence | 77% |
| Coordinates | 39.3155, -76.1595 |
| Nearest City | Edgewood (16 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T18:57:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD |
| Headline | Special Marine Warning issued March 16 at 2:57PM EDT until March 16 at 5:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-16T17:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
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 52/100, near Edgewood (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.