Right now
The most recent data we hold from NOAA arrived 1 minute 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 22:45 UTC. It is kept here as a record.
It is the 27th strongest of the 123 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 18 July 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 21 at 6:06PM EDT until July 21 at 6:45PM EDT by NWS Baltimore MD/Washington DC
Urban PEI: 95,476 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 10, 2026 · score 39 · 3.2 km
- July 5, 2026 · score 39 · 10.9 km
- May 27, 2026 · score 34 · 17.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 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) | 32 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 38.4193, -81.9247 |
| Nearest City | Charleston (27 km) |
| Urban exposure index (PEI) | 95.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T22:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.eea87d77975a5b1f7d19493a0a79c269 |
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: 2026-07-21T22:06:00.000Z.
First archived: 2026-07-21T22:08:16.880Z. 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 | Garrett, MD; Grant, WV; Pendleton, WV; Barbour, WV; Doddridge, WV; Gilmer, WV; Harrison, WV; Lewis, WV; Upshur, WV; Barbour, WV; Randolph, WV and 7 more areas |
| Headline | Severe Thunderstorm Warning issued July 21 at 6:06PM EDT until July 21 at 6:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-21T18:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.eea87d77975a5b1f7d19493a0a79c269fecb4a79.001.1","noaa_urn:oid:2.49.0.1.840.0.bd55adae5088c0b1abc65bf93b59146a04666a30.001.1","noaa_urn:oid:2.49.0.1.840.0.a934478783421bc6e25798e0af6eb09e6d2cc4cf.002.1","noaa_urn:oid:2.49.0.1.840.0.2170b23d2803cb19dde1f0f764b40d36c7e814fd.001.1","noaa_urn:oid:2.49.0.1.840.0.5f86391974e3730725889094be20ffe4721eff42.001.1","noaa_urn:oid:2.49.0.1.840.0.767541f18fe415ce57110315cf3c178d9150815f.001.1","noaa_urn:oid:2.49.0.1.840.0.8034b8217a309e7162838664048effd1bda5ff2d.001.1","noaa_urn:oid:2.49.0.1.840.0.63719e402a228d43b92bec8829b62eee7ff9e0f9.001.1","noaa_urn:oid:2.49.0.1.840.0.7e2ca1321c7a70e22c8f4810e34128dab6ece15c.001.1","noaa_urn:oid:2.49.0.1.840.0.0d1bb249c2c3cec4f418605040debd53abf565c0.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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