Calamity
MediumSevere WeatherCalamity Score: 39

Severe Weather in United States

GrantUnited 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 29 May 2026 at 23:45 UTC. It is kept here as a record.

It is the 2nd strongest of the 62 detections recorded within 20 km of this point since 17 April 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 29 at 6:34PM CDT until May 29 at 6:45PM CDT by NWS Norman OK

An estimated 51,776 people live within 50 km of this point.

Nearby, since 17 April 2026

How we know

Confirmed by 4 independent sources, including NOAA.

Our own score for this event is 39 out of 100, at 88 % 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)39 / 100
Our confidence88%
Coordinates36.8003, -97.6539
Nearest CityEnid (49 km)
Population Exposed51.8K within 50 km
Impact Tiersignificant
Timestamp2026-05-29T23:34:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5ca0d51fb6978ba5e425116b687b580a

Score Breakdown

35
intensity
55
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescAlfalfa, OK; Grant, OK; Kingfisher, OK; Logan, OK; Cowley, KS; Sumner, KS and 2 more areas
HeadlineSevere Thunderstorm Warning issued May 29 at 6:34PM CDT until May 29 at 6:45PM CDT by NWS Norman OK
Expires2026-05-29T18:45:00-05:00
SenderNameNWS Norman OK
HasExactCoordstrue
MergedCount5
MergedIds["noaa_urn:oid:2.49.0.1.840.0.5ca0d51fb6978ba5e425116b687b580ac5fabde6.001.1","noaa_urn:oid:2.49.0.1.840.0.6641a10940e554604192b8d713caac8c6dfba8ee.001.1","noaa_urn:oid:2.49.0.1.840.0.361390348d3b876efefdbe2cf108ec1eeb958d8b.001.1","noaa_urn:oid:2.49.0.1.840.0.d77d2eff1a1c5fe91008f21135c255fa25d84f85.002.1","noaa_urn:oid:2.49.0.1.840.0.de9a4a4fac861137f82b6d5415e9c5c56a5ce4a2.001.1"]
Iem TypeSummaryH
Iem Magnitude1
Iem UnitInch
Iem City4 S Drummond
Iem CountyGarfield
Iem StateOK
Iem WfoOUN
MergedSources[{"id":"iem_G_36.550_-97.830_1780093380000","source":"iem","severity":"low","severityValue":25,"timestamp":1780093380000,"latitude":36.55,"longitude":-97.83},{"id":"iem_G_36.390_-98.110_1780091400000","source":"iem","severity":"low","severityValue":25,"timestamp":1780091400000,"latitude":36.39,"longitude":-98.11},{"id":"iem_H_36.240_-98.030_1780090500000","source":"iem","severity":"low","severityValue":25,"timestamp":1780090500000,"latitude":36.24,"longitude":-98.03}]

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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