This alert expired on 23 July 2026 at 05:15 UTC. It is kept here as a record.
It is the 20th strongest of the 46 detections recorded within 20 km of this point since 9 March 2026. The last comparable one was on 15 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tropical Storm Watch issued July 22 at 4:09PM CDT by NWS Lake Charles LA
An estimated 416,002 people live within 50 km of this point.
Nearby, since 9 March 2026
- May 27, 2026 · score 43 · 7.3 km
- September 2, 2026 · score 37 · 9.3 km
- May 20, 2026 · score 48 · 13.5 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 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 29.4549, -94.7105 |
| Nearest City | Galveston (19 km) |
| Population Exposed | 416.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-22T21:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tropical Storm Watch_noaa_urn:oid:2.49.0.1.840.0.b1461cf5de8bd5db32148287bffd5d90 |
Score Breakdown
Technical Details
| Event | Tropical Storm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | West Cameron; Lower Jefferson; Brazoria Islands and 5 more areas |
| Headline | Tropical Storm Watch issued July 22 at 4:09PM CDT by NWS Lake Charles LA |
| Expires | 2026-07-23T00:15:00-05:00 |
| SenderName | NWS Lake Charles LA |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b1461cf5de8bd5db32148287bffd5d90c9b6c1e9.002.1","noaa_urn:oid:2.49.0.1.840.0.b1461cf5de8bd5db32148287bffd5d90c9b6c1e9.001.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.006.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.005.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.003.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.001.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.002.1","noaa_urn:oid:2.49.0.1.840.0.5e73a5740a026e68c12b3d14b43d7072d6a4e942.004.1"] |
Safety Information
During a tropical cyclone: shelter in a sturdy interior room away from windows. Stock emergency supplies including water, food, medications, and flashlights. Do not venture outdoors during the eye of the storm. After passage, beware of downed power lines, flooding, and structural damage. Follow official guidance for evacuation and shelter.
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 near Galveston?
Calamity.live data shows a weather event with CalamityScore 43/100, near Galveston (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.