Calamity
MediumSevere WeatherCalamity Score: 43

Severe Weather near Harker Heights

BellUnited 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.

One other detection within 20 km in the last 24 hours, <1 km from here.

This alert expired on 11 May 2026 at 07:00 UTC. It is kept here as a record.

It is the 7th strongest of the 134 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 24 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Watch issued May 11 at 12:47AM CDT until May 11 at 2:00AM CDT by NWS Austin/San Antonio TX

An estimated 389,158 people live within 50 km of this point.

Nearby, since 10 March 2026

How we know

Confirmed by 19 independent sources, including NOAA.

Our own score for this event is 43 out of 100, at 90 % 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 confidence90%
Coordinates31.0000, -97.6000
Nearest CityHarker Heights (11 km)
Population Exposed389.2K within 50 km
Impact Tiersignificant
Timestamp2026-05-11T05:47:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.5bfc2e4ebf3f1033794626d79e20de6d

Score Breakdown

35
intensity
70
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Watch
UrgencyFuture
CertaintyPossible
AreaDescDeWitt, TX; Dimmit, TX; Karnes, TX; Lavaca, TX; Maverick, TX; Aransas, TX; Bee, TX; Calhoun, TX; Duval, TX; Goliad, TX; Jim Wells, TX; Kleberg, TX; La Salle, TX; Live Oak, TX; McMullen, TX; Nueces, TX; Refugio, TX; San Patricio, TX; Victoria, TX; Webb, TX; Austin, TX; Brazoria, TX; Brazos, TX; Burleson, TX; Colorado, TX; Fort Bend, TX; Galveston, TX; Grimes, TX; Harris, TX; Jackson, TX; Matagorda, TX; Montgomery, TX; Waller, TX; Washington, TX; Wharton, TX
HeadlineSevere Thunderstorm Watch issued May 11 at 12:47AM CDT until May 11 at 2:00AM CDT by NWS Austin/San Antonio TX
Expires2026-05-11T02:00:00-05:00
SenderNameNWS Austin/San Antonio TX
HasExactCoordsfalse
MergedCount3
MergedIds["noaa_urn:oid:2.49.0.1.840.0.5bfc2e4ebf3f1033794626d79e20de6d34f33352.002.1","noaa_urn:oid:2.49.0.1.840.0.67210d5e2d0aaad04c382c5b4481d7f16ef5e6f0.001.1","noaa_urn:oid:2.49.0.1.840.0.4d7d9790029976edb99e3e8807581379e9370838.001.1"]
Iem TypeSummaryG
Iem Magnitude50
Iem UnitMPH
Iem City3 N Point Venture
Iem CountyTravis
Iem StateTX
Iem WfoEWX
Iem RemarkMesonet station FW7040 Lago Vista.
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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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