Right now
The most recent data we hold from NOAA arrived 24 minutes 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 21:45 UTC. It is kept here as a record.
It is the 13th strongest of the 58 detections recorded within 20 km of this point since 15 March 2026. 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: Severe Thunderstorm Warning issued July 21 at 5:28PM EDT until July 21 at 5:45PM EDT by NWS Charleston WV
Nearby, since 15 March 2026
- August 11, 2026 · score 46 · 20.4 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 | 38.1752, -83.5854 |
| Nearest City | Winchester (56 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-21T21:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.77de80cf6dc8e542f25a70c43bb20a8e |
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: 2026-07-21T21:28:00.000Z.
First archived: 2026-07-21T21:32:14.571Z. 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 | Barbour, WV; Harrison, WV; Taylor, WV; Doddridge, WV; Harrison, WV; Lewis, WV; Boyd, KY; Carter, KY; Greenup, KY; Gallia, OH; Lawrence, OH; Cabell, WV; Wayne, WV and 6 more areas |
| Headline | Severe Thunderstorm Warning issued July 21 at 5:28PM EDT until July 21 at 5:45PM EDT by NWS Charleston WV |
| Expires | 2026-07-21T17:45:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.77de80cf6dc8e542f25a70c43bb20a8e63dcc1f3.001.1","noaa_urn:oid:2.49.0.1.840.0.17b2ea9678a2138ff060552e6e5e3f88ff3afa93.002.1","noaa_urn:oid:2.49.0.1.840.0.2a22b2aa5afc9330c7e11bb207e0a0e6228fa768.001.1","noaa_urn:oid:2.49.0.1.840.0.1d458c0b9d1e1612a8f8b40a55e7a7578626494d.001.1","noaa_urn:oid:2.49.0.1.840.0.f922a179c7312faa04c6793e3751b31c8e9542bf.001.1","noaa_urn:oid:2.49.0.1.840.0.db30f56638c079df43e74195621d44b5e133e0cc.002.1","noaa_urn:oid:2.49.0.1.840.0.7721f1bf6df434ea1fa11871c39567e89ee63d38.001.1","noaa_urn:oid:2.49.0.1.840.0.093a0bdce3b440e835ee9a58d992e12ad3820ddb.001.1","noaa_urn:oid:2.49.0.1.840.0.917de4d9dbe49d5852a834adc00f2e4a03fad683.001.1"] |
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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