Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 May 2026 at 01:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 11 detections recorded within 20 km of this point since 11 May 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 10 at 8:20PM CDT until May 10 at 8:30PM CDT by NWS Houston/Galveston TX
An estimated 82,118 people live within 50 km of this point.
Nearby, since 11 May 2026
- July 14, 2026 · score 39 · 0.8 km
- June 15, 2026 · score 22 · 6.8 km
- May 11, 2026 · score 43 · 13.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 30.8950, -96.7555 |
| Nearest City | Bryan (45 km) |
| Population Exposed | 82.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-11T01:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.de354724a84e6f25e897c17d883bc076 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grimes, TX; Walker, TX; McLennan, TX; Montgomery, TX; Walker, TX and 3 more areas |
| Headline | Severe Thunderstorm Warning issued May 10 at 8:20PM CDT until May 10 at 8:30PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-10T20:30:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.de354724a84e6f25e897c17d883bc076113bcd9d.001.1","noaa_urn:oid:2.49.0.1.840.0.9c682b882f303c46731739e25a77a27234b33370.001.1","noaa_urn:oid:2.49.0.1.840.0.38865cfab26ef6343db89be3d60326d525668668.001.1","noaa_urn:oid:2.49.0.1.840.0.a5fec1200c798a2aeaeb34330cf810e1aa068300.001.1","noaa_urn:oid:2.49.0.1.840.0.a4828edb9dac08c747041e91650e1a9e85814dd7.001.1","noaa_urn:oid:2.49.0.1.840.0.028b414fd51f91241a36113502f2c3f6a17c7c33.001.1"] |
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 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.
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