This alert expired on 12 March 2026 at 00:30 UTC. It is kept here as a record.
It is the 8th strongest of the 160 detections recorded within 20 km of this point since 11 March 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 11 at 7:57PM EDT until March 11 at 8:30PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,261,662 people live within 50 km of this point.
Nearby, since 11 March 2026
- July 18, 2026 · score 52 · 1.2 km
- August 8, 2026 · score 46 · 1.6 km
- March 12, 2026 · score 48 · 2.5 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 | 39.4292, -76.0654 |
| Nearest City | Aberdeen (12 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-11T23:57:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cecil, MD; Baltimore, MD; Harford, MD; Kent, DE; New Castle, DE; Kent, MD; Queen Anne's, MD |
| Headline | Severe Thunderstorm Warning issued March 11 at 7:57PM EDT until March 11 at 8:30PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-11T20:30:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.29a3f4d245ccc35255a24f6362c08324f4edf86d.001.1","noaa_urn:oid:2.49.0.1.840.0.e3e76672ec533c0d3f48c7fa343a1ebc90e3411c.001.1","noaa_urn:oid:2.49.0.1.840.0.fdfc1daf2ae6c06db24096d054d0db459c1a1d6f.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 52/100, near Aberdeen (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.