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.
6 other detections within 20 km in the last 24 hours, the nearest 19 km from here.
This alert expired on 21 September 2026 at 23:00 UTC. It is kept here as a record.
It is the 21st strongest of the 68 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 21 at 6:27PM EDT until September 21 at 7:00PM EDT by NWS Morristown TN
Nearby, since 16 March 2026
- September 6, 2026 · score 16 · 19.7 km
- July 6, 2026 · score 22 · 20.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
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 v5. 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 | 0.70/1 |
| Coordinates | 37.2415, -81.9502 |
| Nearest City | Bristol (74 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T22:27:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.997a04c49d62dae8ea2ee820e5b108e5913d3302.002.1 |
Physical priority index · v5. 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: 2026-09-21T22:27:00.000Z.
First archived: 2026-09-21T22:30:44.826Z. 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 | Sullivan, TN; Washington, VA; City of Bristol, VA; Cabell, WV; Lincoln, WV; Logan, WV; Wayne, WV; Lawrence, KY; Wayne, WV and 2 more areas |
| Headline | Severe Thunderstorm Warning issued September 21 at 6:27PM EDT until September 21 at 7:00PM EDT by NWS Morristown TN |
| Expires | 2026-09-21T19:00:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.997a04c49d62dae8ea2ee820e5b108e5913d3302.002.1","noaa_urn:oid:2.49.0.1.840.0.a835e7c9487609b95103fbc1c4bdc1404f425a95.001.1","noaa_urn:oid:2.49.0.1.840.0.db33994aec945cdbe16a89959848270edb1bd85b.002.1","noaa_urn:oid:2.49.0.1.840.0.40b19a551bab7eb12c9e03d106916454afc35e7b.001.1","noaa_urn:oid:2.49.0.1.840.0.69e546fd0fd5b605b0cb0fa7d8923062acaa4614.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 19 E Vansant |
| Spc County | Buchanan |
| Spc State | VA |
| Spc Comments | Tree down blocking the road. (RLX) |
| Iem TypeSummary | D |
| Iem City | 19 E Vansant |
| Iem County | Buchanan |
| Iem State | VA |
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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