This alert expired on 28 June 2026 at 18:30 UTC. It is kept here as a record.
It is the 12th strongest of the 24 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 28 at 1:19PM EDT until June 28 at 2:30PM EDT by NWS Morristown TN
An estimated 45,968 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 13, 2026 · score 39 · 23.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 35.8262, -83.3467 |
| Nearest City | Sevierville (20 km) |
| Population Exposed | 46.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-28T17:19:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3540cdb1e34f7367bd59cd6787e7daf4df906235.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Cocke, TN; Jefferson, TN; Sevier, TN |
| Headline | Flash Flood Warning issued June 28 at 1:19PM EDT until June 28 at 2:30PM EDT by NWS Morristown TN |
| Expires | 2026-06-28T14:30:00-04:00 |
| SenderName | NWS Morristown TN |
| HasExactCoords | true |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 Sevierville?
Calamity.live data shows a weather event with CalamityScore 34/100, near Sevierville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.