This alert expired on 28 August 2026 at 22:30 UTC. It is kept here as a record.
It is the 27th strongest of the 49 detections recorded within 20 km of this point since 27 May 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 28 at 4:56PM CDT until August 28 at 5:30PM CDT by NWS Houston/Galveston TX
An estimated 3,576,492 people live within 50 km of this point.
Nearby, since 27 May 2026
- May 27, 2026 · score 52 · 2.8 km
- August 28, 2026 · score 52 · 5.3 km
- August 29, 2026 · score 58 · 5.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 79 % 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) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 30.0133, -95.3883 |
| Nearest City | Spring (8 km) |
| Population Exposed | 3.6M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-28T21:56:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Harris, TX; Montgomery, TX |
| Headline | Severe Thunderstorm Warning issued August 28 at 4:56PM CDT until August 28 at 5:30PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-08-28T17:30:00-05:00 |
| 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Spring (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.