Calamity
MediumSevere WeatherCalamity Score: 39

Severe Weather in United States

GrantUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 5 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 44 detections recorded within 20 km of this point since 17 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued May 29 at 6:03PM 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 87 % 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 confidence87%
Coordinates36.8480, -97.8602
Nearest CityEnid (50 km)
Population Exposed51.8K within 50 km
Impact Tiersignificant
Timestamp2026-05-29T23:03:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.18ffd03a98132c7e247eb37df1ddd22a

Score Breakdown

35
intensity
55
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescGrant, OK; Kay, OK; Grant, OK; Barber, KS and 1 more areas
HeadlineSevere Thunderstorm Warning issued May 29 at 6:03PM 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:2.49.0.1.840.0.18ffd03a98132c7e247eb37df1ddd22a9128aebd.001.1","noaa_urn:oid:2.49.0.1.840.0.4466c9b55891d3dfb6ad64df065c7f4f9fbac993.001.1","noaa_urn:oid:2.49.0.1.840.0.6544eaac1393d44092a75e2d09d523c6a8edf03c.001.1","noaa_urn:oid:2.49.0.1.840.0.0b1ae54cac34448f53bdbbb8603896d656fa880e.001.1","noaa_urn:oid:2.49.0.1.840.0.4aef8bd867a73bc38b3ac199fbdbdf9388527e90.001.1"]
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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