Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

CalhounUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 3 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 27 May 2026 at 14:00 UTC. It is kept here as a record.

It is the 2nd strongest of the 18 detections recorded within 20 km of this point since 19 May 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Special Marine Warning issued May 27 at 7:09AM CDT until May 27 at 9:00AM CDT by NWS Houston/Galveston TX

Nearby, since 19 May 2026

How we know

Confirmed by 4 independent sources, including NOAA.

Our own score for this event is 22 out of 100, at 69 % 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)22 / 100
Our confidence69%
Coordinates28.1692, -96.7137
Nearest CityPortland (68 km)
Impact Tierminor
Timestamp2026-05-27T12:09:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.bc117976829a0c4f1f2ed1a73b130bc5

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventSpecial Marine Warning
UrgencyImmediate
CertaintyLikely
AreaDescMatagorda Bay; Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM; Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM; Baffin Bay and Upper Laguna Madre; Corpus Christi and Nueces Bays; Copano, Aransas, and Redfish Bays; San Antonio, Mesquite, and Espiritu Santo Bays; Coastal waters from Baffin Bay to Port Aransas out 20 NM; Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM; Waters from Baffin Bay to Port Aransas from 20 to 60 NM; Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM
HeadlineSpecial Marine Warning issued May 27 at 7:09AM CDT until May 27 at 9:00AM CDT by NWS Houston/Galveston TX
Expires2026-05-27T09:00:00-05:00
SenderNameNWS Houston/Galveston TX
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.bc117976829a0c4f1f2ed1a73b130bc5e8d65dca.001.1","noaa_urn:oid:2.49.0.1.840.0.b265e15b8115b1984ca2489d0c0646a81854df4c.001.1"]
Iem TypeSummaryM
Iem Magnitude45
Iem UnitMPH
Iem City8 SE Aransas Pass
Iem CountyNueces
Iem StateTX
Iem WfoCRP
Iem RemarkBuoy station RTAT2 Port Aransas, TX.
MergedSources[{"id":"iem_M_27.820_-97.080_1779867300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779867300000,"latitude":27.82,"longitude":-97.08},{"id":"iem_M_27.870_-97.320_1779865920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779865920000,"latitude":27.87,"longitude":-97.32},{"id":"iem_M_27.840_-97.070_1779867000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779867000000,"latitude":27.84,"longitude":-97.07}]

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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