This alert expired on 13 August 2026 at 03:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 23 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 11:04PM EDT until August 12 at 11:45PM EDT by NWS Morristown TN
An estimated 177,942 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 28, 2026 · score 43 · 6.9 km
- June 29, 2026 · score 43 · 11.2 km
- August 12, 2026 · score 43 · 15.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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 | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 36.5117, -82.6298 |
| Nearest City | Kingsport (8 km) |
| Population Exposed | 177.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T03:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.047611ce197e983c8cf941cb41467149 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Carter, TN; Greene, TN; Hawkins, TN; Sullivan, TN; Washington, TN; Scott, VA; Washington, VA; City of Bristol, VA; Hawkins, TN; Sullivan, TN; Scott, VA |
| Headline | Severe Thunderstorm Warning issued August 12 at 11:04PM EDT until August 12 at 11:45PM EDT by NWS Morristown TN |
| Expires | 2026-08-12T23:45:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.047611ce197e983c8cf941cb414671497a8be1a8.001.1","noaa_urn:oid:2.49.0.1.840.0.441453ffe5f0565158b7fae4ccb2446c7c9262bd.002.1"] |
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.
Want to know when something happens near Kingsport?
Calamity.live data shows a weather event with CalamityScore 43/100, near Kingsport (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.