This alert expired on 21 July 2026 at 21:00 UTC. It is kept here as a record.
No stronger detection stands among the 133 recorded within 20 km of this point since 16 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued July 21 at 4:41PM EDT until July 21 at 5:00PM EDT by NWS Pittsburgh PA
An estimated 65,593 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 10, 2026 · score 39 · 4.4 km
- June 20, 2026 · score 39 · 5.3 km
- June 21, 2026 · score 39 · 5.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 63 out of 100, at 79 % 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 | Critical |
| Calamity Score (ours) | 63 / 100 |
| Our confidence | 79% |
| Coordinates | 39.4300, -80.3570 |
| Nearest City | Clarksburg (17 km) |
| Population Exposed | 65.6K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-07-21T20:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.6908790d8118632f4b98ec7fd192a1a6 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Preston, WV; Washington, OH; Doddridge, WV; Pleasants, WV; Ritchie, WV; Tyler, WV |
| Headline | Tornado Warning issued July 21 at 4:41PM EDT until July 21 at 5:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-21T17:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6908790d8118632f4b98ec7fd192a1a60802dfca.002.1","noaa_urn:oid:2.49.0.1.840.0.297755a87abd9d6b6be73f072f460f04d539edbc.001.1"] |
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 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 Clarksburg?
Calamity.live data shows a weather event with CalamityScore 63/100, near Clarksburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.