This alert expired on 11 June 2026 at 22:15 UTC. It is kept here as a record.
It is the 12th strongest of the 21 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: Severe Thunderstorm Warning issued June 11 at 5:51PM EDT until June 11 at 6:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 65,310 people live within 50 km of this point.
Nearby, since 11 March 2026
- June 15, 2026 · score 39 · 3.8 km
- March 11, 2026 · score 45 · 8.5 km
- March 11, 2026 · score 45 · 8.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 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) | 32 / 100 |
| Our confidence | 80% |
| Coordinates | 40.2383, -78.5581 |
| Nearest City | Johnstown (32 km) |
| Population Exposed | 65.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T21:51:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Allegany, MD; Rockingham, VA; Shenandoah, VA; Grant, WV; Hampshire, WV; Hardy, WV; Mineral, WV; Pendleton, WV; Barbour, WV; Randolph, WV; Randolph, WV; Upshur, WV; Webster, WV and 9 more areas |
| Headline | Severe Thunderstorm Warning issued June 11 at 5:51PM EDT until June 11 at 6:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-11T18:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6a85ec3b3353efd39a40976080a4896e542e0bf7.002.1","noaa_urn:oid:2.49.0.1.840.0.f27fb5c6e15adf44a169428a02091d3311518f44.002.1","noaa_urn:oid:2.49.0.1.840.0.5e290d43393ed0cae36663527c3313c337642635.002.1","noaa_urn:oid:2.49.0.1.840.0.462a0170b5f9ebc4c9bdd3a3ca68f7b8bdc97230.001.1","noaa_urn:oid:2.49.0.1.840.0.39618571467e87df96157ebb473e338b601c65b8.001.1","noaa_urn:oid:2.49.0.1.840.0.2b4e8c23923461200fecf65b6ceddcf72e6f3f8e.001.1","noaa_urn:oid:2.49.0.1.840.0.9de963617dfcaf225b1a0581f24978facc06cf04.001.1","noaa_urn:oid:2.49.0.1.840.0.ec6aec84e3e00f5cde19ef5e9dc7dc2846dd2a82.001.1","noaa_urn:oid:2.49.0.1.840.0.5d28523e13f2be654dc0f2c9561d0441b8faf29e.001.1","noaa_urn:oid:2.49.0.1.840.0.dff7d5877d95fde2e1aaf5cfc048b5362454baed.001.1","noaa_urn:oid:2.49.0.1.840.0.01646c1fb2a35c3aff5bdd04811cd3a5f8a96f38.001.1","noaa_urn:oid:2.49.0.1.840.0.36794172b2b6aa747df355e76c4189199e5835c8.001.1"] |
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 32/100, near Johnstown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.