This alert expired on 2 September 2026 at 22:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 16 detections recorded within 20 km of this point since 2 June 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 2 at 3:03PM CDT until September 2 at 5:30PM CDT by NWS Houston/Galveston TX
An estimated 36,333 people live within 50 km of this point.
Nearby, since 2 June 2026
- September 2, 2026 · score 16 · 17.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % 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) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 30.9561, -94.9854 |
| Nearest City | Lufkin (49 km) |
| Population Exposed | 36.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T20:03:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1e70fba61a67f059230cf133137f5ead32c6063e.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Polk, TX; Polk, TX; Trinity, TX |
| Headline | Flash Flood Warning issued September 2 at 3:03PM CDT until September 2 at 5:30PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-09-02T17:30:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1e70fba61a67f059230cf133137f5ead32c6063e.001.1","noaa_urn:oid:2.49.0.1.840.0.2bd3cce93cff40a7fd59a47b423c71e99c59a613.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.