This alert expired on 28 August 2026 at 03:15 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 11 May 2026. The last comparable one was on 11 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 27 at 9:36PM CDT until August 27 at 10:15PM CDT by NWS Houston/Galveston TX
An estimated 449,613 people live within 50 km of this point.
Nearby, since 11 May 2026
- May 11, 2026 · score 43 · 7.7 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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 30.2100, -95.7660 |
| Nearest City | The Woodlands (27 km) |
| Population Exposed | 449.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-28T02:36:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.989938bfc503b68e021a66760e186073144b04e3.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grimes, TX; Harris, TX; Montgomery, TX; Waller, TX |
| Headline | Severe Thunderstorm Warning issued August 27 at 9:36PM CDT until August 27 at 10:15PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-08-27T22:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
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.
Want to know when something happens near The Woodlands?
Calamity.live data shows a weather event with CalamityScore 43/100, near The Woodlands (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.