Right now
The most recent data we hold from HEAT GOV arrived 25 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 6 September 2026 at 18:00 UTC. It is kept here as a record.
It is the only one we have recorded within 20 km of this point since 16 March 2026. The last comparable one was on 8 August 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 105 expected. * WHERE...Bedford, Giles, Hickman, Lawrence, Lewis, Marshall, Maury, Perry, and Wayne Counties. * WHEN...Until 8 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Urban PEI: 72,855 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 17, 2026 · 3.9 km
- August 8, 2026 · 15.1 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 32 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 35.4846, -87.2697 |
| Nearest City | Columbia (26 km) |
| Urban exposure index (PEI) | 72.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-06T01:00:00.000Z |
| Source | http://www.weather.gov |
Physical priority index · v4 (historical). Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: heat_gov. Occurrence: 2026-09-06T01:00:00.000Z.
First archived: 2026-09-06T01:19:47.475Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-05T20:00:00-05:00 |
| Expires | 2026-09-06T13:00:00-05:00 |
| AreaDesc | Perry; Hickman; Lewis; Maury; Marshall; Bedford; Wayne; Lawrence; Giles |
| SenderName | NWS Nashville TN |
| ZonesUsedForCentroid | 9 |
| ZoneCount | 9 |
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.
Review the area, threshold and delivery channel in your account.
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