This alert expired on 27 May 2026 at 06:45 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 27 May 2026 — one other scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 27 at 1:15AM CDT until May 27 at 1:45AM CDT by NWS Houston/Galveston TX
An estimated 525,312 people live within 50 km of this point.
Nearby, since 27 May 2026
- July 14, 2026 · score 48 · 4.1 km
- June 2, 2026 · score 39 · 13.2 km
- June 18, 2026 · score 43 · 20.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 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) | 48 / 100 |
| Our confidence | 85% |
| Coordinates | 29.6700, -96.0829 |
| Nearest City | Katy (29 km) |
| Population Exposed | 525.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T06:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.873fea0f171f8856fa412fa67f38e7de70a220d1.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Austin, TX; Colorado, TX; Fort Bend, TX; Harris, TX; Waller, TX; Wharton, TX |
| Headline | Severe Thunderstorm Warning issued May 27 at 1:15AM CDT until May 27 at 1:45AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-27T01:45:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| Google News RssFeed | weather |
| Google News SourceName | FOX 26 Houston |
| MergedSources | [{"id":"gnews_weather_494400_189","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779841238000,"latitude":29.76,"longitude":-95.36}] |
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 48/100, near Katy (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.