This alert is in force until 3 September 2026, 16:00 UTC.
It is the 8th strongest of the 10 detections recorded within 20 km of this point since 8 March 2026. The last comparable one was on 27 May 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 115 expected. * WHERE...Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Southern Hidalgo, and Starr Counties. * WHEN...From 11 AM to 6 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause hea...
An estimated 303,223 people live within 50 km of this point.
Nearby, since 8 March 2026
- May 27, 2026 · score 48 · 7.9 km
- March 9, 2026 · score 36 · 8.3 km
- May 24, 2026 · score 43 · 8.8 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 | 26.4849, -97.7864 |
| Nearest City | Harlingen (34 km) |
| Population Exposed | 303.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T16:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-03T11:00:00-05:00 |
| Expires | 2026-09-03T11:00:00-05:00 |
| AreaDesc | Inland Kenedy; Starr; Southern Hidalgo; Inland Willacy; Inland Cameron; Coastal Kenedy; Coastal Willacy; Coastal Cameron |
| SenderName | NWS Brownsville TX |
| 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 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.