This alert is in force until 4 September 2026, 11:00 UTC.
It is the 88th strongest of the 88 detections recorded within 20 km of this point since 9 March 2026. The last comparable one was on 12 July 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 106. * WHERE...All of Central Alabama. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 106,326 people live within 50 km of this point.
Nearby, since 9 March 2026
- July 12, 2026 · score 39 · 20.5 km
- July 2, 2026 · score 39 · 20.5 km
- July 1, 2026 · score 39 · 20.5 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 69 % 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 | 69% |
| Coordinates | 32.8704, -86.6176 |
| Nearest City | Alabaster (45 km) |
| Population Exposed | 106.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T19:15:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-03T14:15:00-05:00 |
| Expires | 2026-09-04T06:00:00-05:00 |
| AreaDesc | Marion; Lamar; Fayette; Winston; Walker; Blount; Etowah; Calhoun; Cherokee; Cleburne; Pickens; Tuscaloosa; Jefferson; Shelby; St. Clair; Talladega; Clay; Randolph; Sumter; Greene; Hale; Perry; Bibb; Chilton; Coosa; Tallapoosa; Chambers; Marengo; Dallas; Autauga; Lowndes; Elmore; Montgomery; Macon; Bullock; Lee; Russell; Pike; Barbour |
| SenderName | NWS Birmingham AL |
| ZonesUsedForCentroid | 7 |
| ZoneCount | 39 |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.