This alert expired on 2 September 2026 at 11:15 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 2 September 2026 — 11 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 2 at 3:48AM CDT until September 2 at 6:15AM CDT by NWS Houston/Galveston TX
Nearby, since 2 September 2026
- September 2, 2026 · score 16 · 5.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 61 % 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) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 30.3483, -94.7310 |
| Nearest City | New Caney (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-02T08:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.bf8afe0a1558f6fe08b66376fbd1f6dbb05c75eb.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Polk, TX; Liberty, TX; Chambers, TX; Liberty, TX and 1 more areas |
| Headline | Flash Flood Warning issued September 2 at 3:48AM CDT until September 2 at 6:15AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-09-02T06:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bf8afe0a1558f6fe08b66376fbd1f6dbb05c75eb.001.1","noaa_urn:oid:2.49.0.1.840.0.059d78ce2424802141b517ca9775c3f883f57bbb.001.1","noaa_urn:oid:2.49.0.1.840.0.fa67c36c58f5e70f7966074fb37717955f04550a.001.1","noaa_urn:oid:2.49.0.1.840.0.75592eee50706c53ce4db4a4c2e648e2436d31f6.001.1","noaa_urn:oid:2.49.0.1.840.0.e62f3f9f473289c983d065208a7b01e77b263730.001.1"] |
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 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.