This alert is in force until 3 September 2026, 03:00 UTC.
It is the 12th strongest of the 40 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 17 August 2026.
What the source measured
HEAT GOV reported: * WHAT...Afternoon heat index values will reach or exceed 100 across much of the area, with some locations peaking around 105. * WHERE...Anderson, Campbell, Knox, Morgan, North Sevier, Northwest Blount, Scott TN, and Union Counties. * WHEN...From 1 PM Thursday to 8 PM EDT Friday. * IMPACTS...H...
An estimated 270,425 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 5, 2026 · score 43 · 2.8 km
- July 17, 2026 · score 43 · 10.0 km
- July 5, 2026 · score 43 · 14.9 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 | 67% |
| Coordinates | 36.1178, -84.1002 |
| Nearest City | Oak Ridge (19 km) |
| Population Exposed | 270.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T17:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-03T13:00:00-04:00 |
| Expires | 2026-09-02T23:00:00-04:00 |
| AreaDesc | Scott; Campbell; Morgan; Anderson; Union; Knox; NW Blount; North Sevier |
| SenderName | NWS Morristown TN |
| ZonesUsedForCentroid | 8 |
| ZoneCount | 8 |
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 Oak Ridge?
Calamity.live data shows a weather event with CalamityScore 37/100, near Oak Ridge (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.