Right now
The most recent data we hold from HEAT GOV arrived 18 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 10 km from here.
This alert is in force until 13 September 2026, 23:00 UTC.
It is the 4th strongest of the 5 detections recorded within 20 km of this point since 11 May 2026. The last comparable one was on 12 September 2026. One more was recorded here in the fortnight before it.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 109 expected. * WHERE...Portions of south central and southeast Texas. * WHEN...From 11 AM to 6 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 345,697 people live within 50 km of this point.
Nearby, since 11 May 2026
- September 12, 2026 · score 37 · 9.9 km
- August 28, 2026 · score 48 · 12.1 km
- May 11, 2026 · score 43 · 19.7 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 70 % 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 | 70% |
| Coordinates | 30.1072, -95.9719 |
| Nearest City | Cypress (30 km) |
| Population Exposed | 345.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-13T16:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-13T11:00:00-05:00 |
| Expires | 2026-09-13T18:00:00-05:00 |
| AreaDesc | Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery; Northern Liberty; Colorado; Austin; Waller; Inland Harris; Wharton; Fort Bend; Inland Jackson; Inland Matagorda; Inland Brazoria; Coastal Jackson |
| SenderName | NWS Houston/Galveston TX |
| ZonesUsedForCentroid | 11 |
| ZoneCount | 22 |
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.
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