This alert expired on 14 June 2026 at 22:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 24 detections recorded within 20 km of this point since 13 May 2026. The last comparable one was on 18 May 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 65,114 people live within 50 km of this point.
Nearby, since 13 May 2026
- August 6, 2026 · score 39 · 10.9 km
- May 18, 2026 · score 43 · 22.7 km
- June 14, 2026 · score 39 · 25.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 39.4100, -78.2940 |
| Nearest City | Winchester (27 km) |
| Population Exposed | 65.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-14T21:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c0df6934d4846962aaa3b83b9ee2267beb1fc02a.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Frederick, VA; Berkeley, WV; Hampshire, WV; Morgan, WV |
| 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 |
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.
Want to know when something happens near Winchester?
Calamity.live data shows a weather event with CalamityScore 39/100, near Winchester (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.