This alert expired on 3 September 2026 at 00:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 24 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 4:49PM CDT until September 2 at 7:15PM 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 · 24.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 85 % 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 | 85% |
| Coordinates | 30.9500, -94.7705 |
| Nearest City | Lufkin (44 km) |
| Population Exposed | 36.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T21:49:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f6a78842441346c338bc72ec2e38e19dcf18d4a1.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Polk, TX; San Jacinto, TX; Angelina, TX; Nacogdoches, TX; San Augustine, TX; Polk, TX; Trinity, TX and 2 more areas |
| Headline | Flash Flood Warning issued September 2 at 4:49PM CDT until September 2 at 7:15PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-09-02T19:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f6a78842441346c338bc72ec2e38e19dcf18d4a1.001.1","noaa_urn:oid:2.49.0.1.840.0.890e7aecbf0af88ed305b40cf8f75c3c4c2bf1ae.001.1","noaa_urn:oid:2.49.0.1.840.0.50cdbb8afa5471f2fcd325e53f20a4f21623db39.001.1","noaa_urn:oid:2.49.0.1.840.0.68ccb2c53b2f9e5cdfd6b0b1bc7d66a248300f1e.001.1","noaa_urn:oid:2.49.0.1.840.0.599586ccdbc62d6b3b08158a859c6faf2ee53491.001.1"] |
| Iem TypeSummary | F |
| Iem City | 0 NE Seven Oaks |
| Iem County | Polk |
| Iem State | TX |
| Iem Wfo | HGX |
| Iem Remark | Water over roadway. Location estimated. |
| MergedSources | [{"id":"iem_F_31.000_-94.810_1788375600000","source":"iem","severity":"low","severityValue":25,"timestamp":1788375600000,"latitude":31,"longitude":-94.81},{"id":"iem_F_30.860_-94.850_1788364800000","source":"iem","severity":"low","severityValue":25,"timestamp":1788364800000,"latitude":30.86,"longitude":-94.85}] |
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.