This alert expired on 18 June 2026 at 23:15 UTC. It is kept here as a record.
It is the 4th strongest of the 39 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 30 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 6:31PM EDT until June 18 at 7:15PM EDT by NWS Morristown TN
An estimated 61,062 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 28, 2026 · score 39 · 6.6 km
- May 30, 2026 · score 43 · 10.9 km
- March 16, 2026 · score 43 · 14.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 79 % 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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 36.1080, -83.3640 |
| Nearest City | Morristown (13 km) |
| Population Exposed | 61.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T22:31:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6ce38348799381c8909c3c6de972dfe2d3dbeec3.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cocke, TN; Grainger, TN; Greene, TN; Hamblen, TN; Hawkins, TN; Jefferson, TN |
| Headline | Severe Thunderstorm Warning issued June 18 at 6:31PM EDT until June 18 at 7:15PM EDT by NWS Morristown TN |
| Expires | 2026-06-18T19:15:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
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 Morristown?
Calamity.live data shows a weather event with CalamityScore 39/100, near Morristown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.