This alert is in force until 1 September 2026, 22:45 UTC.
It is the 20th strongest of the 27 detections recorded within 20 km of this point since 20 May 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 1 at 2:49PM CDT until September 1 at 5:45PM CDT by NWS Lake Charles LA
An estimated 222,915 people live within 50 km of this point.
Nearby, since 20 May 2026
- August 31, 2026 · score 37 · 8.0 km
- September 1, 2026 · score 55 · 14.1 km
- July 15, 2026 · score 43 · 15.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 85% |
| Coordinates | 29.8169, -93.9769 |
| Nearest City | Port Arthur (9 km) |
| Population Exposed | 222.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-01T19:49:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ba3bd2d0f99e951e235d91685e4cb725d0aa6812.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Jefferson, TX |
| Headline | Flash Flood Warning issued September 1 at 2:49PM CDT until September 1 at 5:45PM CDT by NWS Lake Charles LA |
| Expires | 2026-09-01T17:45:00-05:00 |
| SenderName | NWS Lake Charles LA |
| HasExactCoords | true |
| Iem TypeSummary | N |
| Iem Magnitude | 56 |
| Iem Unit | MPH |
| Iem City | 5 SE Sabine Pass |
| Iem County | GMZ450 |
| Iem State | TX |
| Iem Wfo | LCH |
| Iem Remark | Buoy station TXPT2 Texas Point, TX. |
| MergedSources | [{"id":"iem_N_29.680_-93.840_1788288840000","source":"iem","severity":"low","severityValue":25,"timestamp":1788288840000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.680_-93.840_1788287040000","source":"iem","severity":"low","severityValue":25,"timestamp":1788287040000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.900_-94.040_1788295020000","source":"iem","severity":"low","severityValue":25,"timestamp":1788295020000,"latitude":29.9,"longitude":-94.04},{"id":"iem_N_29.870_-93.930_1788293460000","source":"iem","severity":"low","severityValue":25,"timestamp":1788293460000,"latitude":29.87,"longitude":-93.93},{"id":"iem_N_29.680_-93.840_1788280920000","source":"iem","severity":"low","severityValue":25,"timestamp":1788280920000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.870_-93.930_1788289200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788289200000,"latitude":29.87,"longitude":-93.93},{"id":"iem_N_29.950_-94.030_1788292380000","source":"iem","severity":"low","severityValue":25,"timestamp":1788292380000,"latitude":29.95,"longitude":-94.03},{"id":"iem_N_29.680_-93.840_1788282720000","source":"iem","severity":"low","severityValue":25,"timestamp":1788282720000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.680_-94.030_1788288600000","source":"iem","severity":"low","severityValue":25,"timestamp":1788288600000,"latitude":29.68,"longitude":-94.03},{"id":"iem_N_29.910_-94.140_1788296220000","source":"iem","severity":"low","severityValue":25,"timestamp":1788296220000,"latitude":29.91,"longitude":-94.14},{"id":"iem_N_29.870_-93.930_1788292080000","source":"iem","severity":"low","severityValue":25,"timestamp":1788292080000,"latitude":29.87,"longitude":-93.93},{"id":"iem_N_29.680_-93.840_1788287400000","source":"iem","severity":"low","severityValue":25,"timestamp":1788287400000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.680_-93.840_1788279840000","source":"iem","severity":"low","severityValue":25,"timestamp":1788279840000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_30.000_-94.020_1788296280000","source":"iem","severity":"low","severityValue":25,"timestamp":1788296280000,"latitude":30,"longitude":-94.02},{"id":"iem_N_29.950_-94.030_1788291000000","source":"iem","severity":"low","severityValue":25,"timestamp":1788291000000,"latitude":29.95,"longitude":-94.03},{"id":"iem_N_29.950_-93.920_1788290880000","source":"iem","severity":"low","severityValue":25,"timestamp":1788290880000,"latitude":29.95,"longitude":-93.92},{"id":"iem_N_29.680_-93.840_1788283440000","source":"iem","severity":"low","severityValue":25,"timestamp":1788283440000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.950_-94.030_1788287160000","source":"iem","severity":"low","severityValue":25,"timestamp":1788287160000,"latitude":29.95,"longitude":-94.03},{"id":"iem_N_29.680_-93.840_1788285240000","source":"iem","severity":"low","severityValue":25,"timestamp":1788285240000,"latitude":29.68,"longitude":-93.84},{"id":"iem_N_29.680_-93.840_1788285960000","source":"iem","severity":"low","severityValue":25,"timestamp":1788285960000,"latitude":29.68,"longitude":-93.84}] |
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 10 February 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 near Port Arthur?
Calamity.live data shows a weather event with CalamityScore 37/100, near Port Arthur (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.