This alert expired on 14 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 70 recorded within 20 km of this point since 17 March 2026 — 19 others scored the same. The last comparable one was on 17 March 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 14 at 5:29PM EDT until June 14 at 6:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 633,621 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 5, 2026 · score 48 · 3.8 km
- August 6, 2026 · score 48 · 14.0 km
- July 10, 2026 · score 43 · 16.2 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 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 40.5673, -79.6302 |
| Nearest City | Plum (13 km) |
| Population Exposed | 633.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-14T21:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c0df6934d4846962aaa3b83b9ee2267b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Frederick, VA; Berkeley, WV; Hampshire, WV; Morgan, WV; Monongalia, WV; Preston, WV; Belmont, OH; Columbiana, OH; Guernsey, OH; Harrison, OH; Jefferson, OH; Allegheny, PA; Beaver, PA; Butler, PA; Lawrence, PA; Washington, PA; Brooke, WV; Hancock, WV; Ohio, WV and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 14 at 5:29PM EDT until June 14 at 6:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-14T18:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c0df6934d4846962aaa3b83b9ee2267beb1fc02a.001.1","noaa_urn:oid:2.49.0.1.840.0.cfef93b7703c8803e1f58555c551afbb0a2737cc.002.1","noaa_urn:oid:2.49.0.1.840.0.5b393102b88c194aa016dbcce97f763b5e563c6a.001.1","noaa_urn:oid:2.49.0.1.840.0.43c4c9ba40eaf7a901b4a3ff512ea42eed4d01ee.001.1","noaa_urn:oid:2.49.0.1.840.0.a7b70b885b02394767731d011b5dda12799bfd0b.001.1","noaa_urn:oid:2.49.0.1.840.0.67657c42c87dbeab59b38ca253c7cfb78e328d39.002.1","noaa_urn:oid:2.49.0.1.840.0.3226e35fb6648989d6918484903c0fd7ac813d89.001.1"] |
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 Plum (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.