This alert expired on 22 July 2026 at 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 16 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 21 at 11:57PM EDT until July 22 at 12:15AM EDT by NWS Baltimore MD/Washington DC
An estimated 213,417 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 9, 2026 · score 43 · 4.8 km
- June 12, 2026 · score 43 · 5.5 km
- August 7, 2026 · score 39 · 14.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 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 | critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 37.7012, -78.7976 |
| Nearest City | Waynesboro (42 km) |
| Population Exposed | 213.4K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-07-22T03:57:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.094e5170332ac4b98a08bea5051159ec866c995b.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Nelson, VA |
| Headline | Tornado Warning issued July 21 at 11:57PM EDT until July 22 at 12:15AM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-22T00:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 67/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.