This alert expired on 6 July 2026 at 05:00 UTC. It is kept here as a record.
No stronger detection stands among the 14 recorded within 20 km of this point since 20 May 2026 — 8 others scored the same. The last comparable one was on 19 June 2026.
What the source measured
NOAA reported: Special Marine Warning issued July 5 at 10:55PM CDT until July 6 at 12:00AM CDT by NWS Houston/Galveston TX
An estimated 203,568 people live within 50 km of this point.
Nearby, since 20 May 2026
- June 19, 2026 · score 43 · 4.1 km
- July 23, 2026 · score 39 · 8.6 km
- May 23, 2026 · score 43 · 16.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 29.6772, -94.2121 |
| Nearest City | Port Arthur (35 km) |
| Population Exposed | 203.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T03:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.51c3243c12f66e0a3b14e67e0eee146b |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Galveston Bay; Coastal waters from High Island to Freeport TX out 20 NM; Waters from High Island to Freeport TX from 20 to 60 NM; Sabine Lake; Coastal waters from Cameron LA to High Island TX out 20 NM |
| Headline | Special Marine Warning issued July 5 at 10:55PM CDT until July 6 at 12:00AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-07-06T00:00:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.51c3243c12f66e0a3b14e67e0eee146b154b3cec.001.1","noaa_urn:oid:2.49.0.1.840.0.36bd2d14bdcc6a15e1473e419682d95e5e2752b5.001.1"] |
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 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Port Arthur (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.