This alert expired on 12 March 2026 at 00:15 UTC. It is kept here as a record.
It is the 36th strongest of the 149 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 11 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 11 at 8:06PM EDT until March 11 at 8:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 631,263 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 52 · 2.5 km
- August 8, 2026 · score 46 · 2.7 km
- July 28, 2026 · score 76 · 3.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Our confidence | 77% |
| Coordinates | 39.4330, -76.0364 |
| Nearest City | Aberdeen (14 km) |
| Population Exposed | 631.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T00:06:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Harford, MD; Cecil, MD; Kent, DE; New Castle, DE; Kent, MD; Queen Anne's, MD |
| Headline | Severe Thunderstorm Warning issued March 11 at 8:06PM EDT until March 11 at 8:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-11T20:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b19a09f927df1005fea887bab7178d3b1268df3c.002.1","noaa_urn:oid:2.49.0.1.840.0.29a3f4d245ccc35255a24f6362c08324f4edf86d.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 48/100, near Aberdeen (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.