Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

GrantUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 6 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 9th strongest of the 41 detections recorded within 20 km of this point since 17 April 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued May 29 at 6:28PM CDT until May 29 at 6:45PM CDT by NWS Norman OK

Nearby, since 17 April 2026

How we know

Confirmed by 3 independent sources, including NOAA.

Our own score for this event is 22 out of 100, at 67 % 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 confidence67%
Coordinates36.9085, -97.7785
Nearest CityEnid (57 km)
Impact Tierminor
Timestamp2026-05-29T23:28:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d77d2eff1a1c5fe91008f21135c255fa

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescKay, OK; Alfalfa, OK; Grant, OK; Harper, KS and 1 more areas
HeadlineSevere Thunderstorm Warning issued May 29 at 6:28PM CDT until May 29 at 6:45PM CDT by NWS Norman OK
Expires2026-05-29T18:45:00-05:00
SenderNameNWS Norman OK
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.d77d2eff1a1c5fe91008f21135c255fa25d84f85.002.1","noaa_urn:oid:2.49.0.1.840.0.0799f044dc3e98f35309f6a669d43f02a92c6803.001.1","noaa_urn:oid:2.49.0.1.840.0.de9a4a4fac861137f82b6d5415e9c5c56a5ce4a2.001.1","noaa_urn:oid:2.49.0.1.840.0.6544eaac1393d44092a75e2d09d523c6a8edf03c.001.1"]
Iem TypeSummaryG
Iem Magnitude68
Iem UnitMPH
Iem City1 W Lahoma
Iem CountyMajor
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}]

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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