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.
3 other detections within 20 km in the last 24 hours, the nearest 16 km from here.
This alert expired on 11 August 2026 at 20:15 UTC. It is kept here as a record.
It is the 5th strongest of the 47 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 4 August 2026. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 3:27PM EDT until August 11 at 4:15PM EDT by NWS Morristown TN
An estimated 162,848 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 12, 2026 · score 43 · 4.5 km
- August 13, 2026 · score 43 · 9.7 km
- August 12, 2026 · score 43 · 11.1 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 81 % 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 | 81% |
| Coordinates | 36.5125, -82.3785 |
| Nearest City | Kingsport (17 km) |
| Population Exposed | 162.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T19:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fdb40e0dfcb7e0196c13d25487f77615 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sullivan, TN; Washington, VA; City of Bristol, VA; Sullivan, TN; Washington, TN |
| Headline | Severe Thunderstorm Warning issued August 11 at 3:27PM EDT until August 11 at 4:15PM EDT by NWS Morristown TN |
| Expires | 2026-08-11T16:15:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fdb40e0dfcb7e0196c13d25487f7761563b28eac.001.1","noaa_urn:oid:2.49.0.1.840.0.60a6b4c6889f7bcb9a42a5551e4a33d40c973a3d.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.
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.