This alert expired on 21 July 2026 at 18:15 UTC. It is kept here as a record.
It is the 16th strongest of the 65 detections recorded within 20 km of this point since 23 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 21 at 1:46PM EDT until July 21 at 2:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 92,504 people live within 50 km of this point.
Nearby, since 23 March 2026
- August 7, 2026 · score 39 · 5.8 km
- September 5, 2026 · score 32 · 11.5 km
- August 9, 2026 · score 39 · 13.9 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.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 37.8683, -78.8483 |
| Nearest City | Waynesboro (23 km) |
| Population Exposed | 92.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T17:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9667977a58c5dab696c3ce582681586be33e37ba.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Albemarle, VA; Nelson, VA |
| Headline | Severe Thunderstorm Warning issued July 21 at 1:46PM EDT until July 21 at 2:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-21T14:15:00-04:00 |
| 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 8 March 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 Waynesboro?
Calamity.live data shows a weather event with CalamityScore 39/100, near Waynesboro (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.