Right now
The most recent data we hold from NOAA arrived 11 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 23 May 2026 at 21:00 UTC. It is kept here as a record.
It is the 4th strongest of the 12 detections recorded within 20 km of this point since 20 May 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 23 at 3:12PM CDT until May 23 at 4:00PM CDT by NWS Houston/Galveston TX
An estimated 64,560 people live within 50 km of this point.
Nearby, since 20 May 2026
- June 21, 2026 · score 43 · 10.0 km
- May 20, 2026 · score 39 · 11.4 km
- August 28, 2026 · score 48 · 18.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 84 % 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 | 84% |
| Coordinates | 29.0580, -95.5500 |
| Nearest City | Lake Jackson (12 km) |
| Population Exposed | 64.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T20:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b44fb6365849ffca744aac2106d85f642e3f3cda.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brazoria, TX; Matagorda, TX |
| Headline | Severe Thunderstorm Warning issued May 23 at 3:12PM CDT until May 23 at 4:00PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-23T16:00:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 63 |
| Iem Unit | MPH |
| Iem City | 18 ESE Palacios |
| Iem County | GMZ350 |
| Iem State | TX |
| Iem Wfo | HGX |
| Iem Remark | Mesonet station XMGB Matagorda Bay. |
| MergedSources | [{"id":"iem_M_28.590_-95.980_1779563760000","source":"iem","severity":"low","severityValue":25,"timestamp":1779563760000,"latitude":28.59,"longitude":-95.98}] |
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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