This alert expired on 9 June 2026 at 02:32 UTC. It is kept here as a record.
It is the 33rd strongest of the 67 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 8 June 2026. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 8 at 10:22PM EDT until June 8 at 10:30PM EDT by NWS Morristown TN
An estimated 286,915 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 8, 2026 · score 43 · 3.7 km
- July 17, 2026 · score 43 · 9.4 km
- May 30, 2026 · score 37 · 9.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 36.0280, -83.9440 |
| Nearest City | Knoxville (8 km) |
| Population Exposed | 286.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-09T02:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f9325060e72e16621db70e209bf4df178f05113d.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Knox, TN |
| Headline | Flash Flood Warning issued June 8 at 10:22PM EDT until June 8 at 10:30PM EDT by NWS Morristown TN |
| Expires | 2026-06-08T22:32:00-04:00 |
| 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 Knoxville?
Calamity.live data shows a weather event with CalamityScore 37/100, near Knoxville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.