Calamity
MediumSevere WeatherCalamity Score: 43

Severe Weather in United States

LeonUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 4 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 03:00 UTC. It is kept here as a record.

It is one of only 4 we have recorded within 20 km of this point since 11 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 10 at 9:44PM CDT until May 10 at 10:00PM CDT by NWS Houston/Galveston TX

An estimated 190,007 people live within 50 km of this point.

Nearby, since 11 May 2026

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 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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)43 / 100
Our confidence80%
Coordinates31.0219, -96.1827
Nearest CityBryan (43 km)
Population Exposed190.0K within 50 km
Impact Tiersignificant
Timestamp2026-05-11T02:44:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c53b4787956b343c8afc3749e88efae8

Score Breakdown

35
intensity
70
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescHouston, TX; Madison, TX; Bell, TX; Milam, TX; Leon, TX and 1 more areas
HeadlineSevere Thunderstorm Warning issued May 10 at 9:44PM CDT until May 10 at 10:00PM CDT by NWS Houston/Galveston TX
Expires2026-05-10T22:00:00-05:00
SenderNameNWS Houston/Galveston TX
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.c53b4787956b343c8afc3749e88efae8a4e1e3a3.001.1","noaa_urn:oid:2.49.0.1.840.0.36b80a745e919efe73599264afdcdbaaa2025123.001.1","noaa_urn:oid:2.49.0.1.840.0.97d1ff514b7059e1601d34e427ba0ef4f806bcf8.001.1","noaa_urn:oid:2.49.0.1.840.0.72082cb8c34e51bd7e882a0c0802854636a8d8db.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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