Right now
The most recent data we hold from NOAA arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 21 July 2026 at 23:15 UTC. It is kept here as a record.
It is the 15th strongest of the 72 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 7 July 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 21 at 6:20PM EDT until July 21 at 7:15PM EDT by NWS Charleston WV
Nearby, since 17 March 2026
- June 18, 2026 · score 22 · 8.2 km
- March 17, 2026 · score 22 · 10.4 km
- August 28, 2026 · score 22 · 22.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 16 / 100 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 38.6169, -80.3573 |
| Nearest City | Clarksburg (74 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-21T22:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5bfece26d0e646182bac3c6d2f0f3679 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-21T22:20:00.000Z.
First archived: 2026-07-21T22:23:33.377Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Braxton, WV; Gilmer, WV; Lewis, WV; Pocahontas, WV; Randolph, WV; Upshur, WV; Webster, WV; Frederick, VA; Shenandoah, VA; City of Winchester, VA; Hampshire, WV; Preston, WV; Tucker, WV and 12 more areas |
| Headline | Severe Thunderstorm Warning issued July 21 at 6:20PM EDT until July 21 at 7:15PM EDT by NWS Charleston WV |
| Expires | 2026-07-21T19:15:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5bfece26d0e646182bac3c6d2f0f36796c6bc8dc.001.1","noaa_urn:oid:2.49.0.1.840.0.cf6fdd6187f5091d97303ba50ebd2b4a05ae8507.001.1","noaa_urn:oid:2.49.0.1.840.0.f8a098ea9b7896e10bbf9d214f0d77c858493c02.001.1","noaa_urn:oid:2.49.0.1.840.0.85da92bc6010e1c1a95e4c7649fdd75bf4a4cbfd.001.1","noaa_urn:oid:2.49.0.1.840.0.eea87d77975a5b1f7d19493a0a79c269fecb4a79.001.1","noaa_urn:oid:2.49.0.1.840.0.94d1fb53d1497302b03e7ab31aa91258287be4ff.001.1","noaa_urn:oid:2.49.0.1.840.0.bd55adae5088c0b1abc65bf93b59146a04666a30.001.1","noaa_urn:oid:2.49.0.1.840.0.2170b23d2803cb19dde1f0f764b40d36c7e814fd.001.1","noaa_urn:oid:2.49.0.1.840.0.d33cb98dd1baf8ec707f6ec505db2ed0b68df2b9.001.1","noaa_urn:oid:2.49.0.1.840.0.b0cb00ad1f790f8c97179e5765740e899bd4337e.001.1","noaa_urn:oid:2.49.0.1.840.0.2679ff13eb52bb2dc64239cea0388e8192643624.001.1","noaa_urn:oid:2.49.0.1.840.0.c96ea0cd14f0c6e8fb1210a5b144ab4d75836ada.001.1","noaa_urn:oid:2.49.0.1.840.0.0d1bb249c2c3cec4f418605040debd53abf565c0.001.1","noaa_urn:oid:2.49.0.1.840.0.8034b8217a309e7162838664048effd1bda5ff2d.001.1","noaa_urn:oid:2.49.0.1.840.0.b70eb929a9c4bdb5d81d0514c3cbc8669b94852b.001.1","noaa_urn:oid:2.49.0.1.840.0.21b72828e9cdac571e4b60f3517ce171823fd086.001.1"] |
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 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.
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