This alert expired on 13 June 2026 at 00:15 UTC. It is kept here as a record.
It is the 16th strongest of the 80 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 12 at 8:08PM EDT until June 12 at 8:15PM EDT by NWS Baltimore MD/Washington DC
Nearby, since 17 March 2026
- July 8, 2026 · score 22 · 11.0 km
- March 17, 2026 · score 22 · 14.3 km
- August 3, 2026 · score 43 · 16.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 60 % 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) | 22 / 100 |
| Our confidence | 60% |
| Coordinates | 38.0856, -76.8756 |
| Nearest City | Fredericksburg (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-13T00:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.56887d8af1dad83da7f21fd4dc62c9b9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Charles, MD; Prince Georges, MD; Caroline, VA; Hanover, VA; Henrico, VA; King William, VA; Lancaster, VA; Northumberland, VA |
| Headline | Severe Thunderstorm Warning issued June 12 at 8:08PM EDT until June 12 at 8:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-12T20:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.56887d8af1dad83da7f21fd4dc62c9b94a38a538.001.1","noaa_urn:oid:2.49.0.1.840.0.24cd726f1b80c8ba54a9d4fe736332c88046f05a.001.1","noaa_urn:oid:2.49.0.1.840.0.4ca061c428d1a147406a4e87dc1a1911f9131936.001.1"] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.