Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

PottawatomieUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 1 minute 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 9 May 2026 at 01:00 UTC. It is kept here as a record.

It is the 4th strongest of the 21 detections recorded within 20 km of this point since 24 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 8 at 7:52PM CDT until May 8 at 8:00PM CDT by NWS Norman OK

An estimated 48,589 people live within 50 km of this point.

Nearby, since 24 April 2026

How we know

Confirmed by 7 independent sources, including NOAA.

Our own score for this event is 34 out of 100, at 91 % 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)34 / 100
Our confidence91%
Coordinates35.0535, -96.8496
Nearest CityShawnee (32 km)
Population Exposed48.6K within 50 km
Impact Tiersignificant
Timestamp2026-05-09T00:52:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.88454e14858232834300dff7aefb10cf

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescGarvin, OK; McClain, OK; Comanche, OK; Cotton, OK; Grady, OK; Stephens, OK; Cleveland, OK; Garvin, OK; McClain, OK; Pottawatomie, OK and 5 more areas
HeadlineSevere Thunderstorm Warning issued May 8 at 7:52PM CDT until May 8 at 8:00PM CDT by NWS Norman OK
Expires2026-05-08T20:00:00-05:00
SenderNameNWS Norman OK
HasExactCoordstrue
MergedCount8
MergedIds["noaa_urn:oid:2.49.0.1.840.0.88454e14858232834300dff7aefb10cf01420189.002.1","noaa_urn:oid:2.49.0.1.840.0.bd0ee14a2618e652e6467a29d927457c2fe29113.001.1","noaa_urn:oid:2.49.0.1.840.0.d64f2108abd35d016b77333c938214b4cc289821.001.1","noaa_urn:oid:2.49.0.1.840.0.394c7938b81af5293271ca54aed03272b3bc46f8.001.1","noaa_urn:oid:2.49.0.1.840.0.1744fca8250ef7918c4649459dee7ae571b1ba99.002.1","noaa_urn:oid:2.49.0.1.840.0.bc6491829086331e80698992a66c1b83591065b5.001.1","noaa_urn:oid:2.49.0.1.840.0.5297f906342035d8f6ce0a494107587d3db74e55.001.1","noaa_urn:oid:2.49.0.1.840.0.a940de4a4e593cd63333bd3ab1c4e8799aca0d42.001.1"]
Iem TypeSummaryH
Iem Magnitude2.5
Iem UnitInch
Iem City5 SW Etowah
Iem CountyCleveland
Iem StateOK
Iem WfoOUN
MergedSources[{"id":"iem_H_35.120_-97.230_1778284860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284860000,"latitude":35.12,"longitude":-97.23},{"id":"iem_H_35.110_-97.220_1778284920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284920000,"latitude":35.11,"longitude":-97.22},{"id":"iem_H_35.100_-97.210_1778284920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284920000,"latitude":35.1,"longitude":-97.21},{"id":"iem_H_35.130_-97.170_1778284980000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284980000,"latitude":35.13,"longitude":-97.17},{"id":"iem_H_35.110_-97.220_1778284980000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284980000,"latitude":35.11,"longitude":-97.22},{"id":"iem_H_35.090_-97.230_1778285100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778285100000,"latitude":35.09,"longitude":-97.23}]

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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Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.