Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

ShermanUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 13 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 21 June 2026 at 00:30 UTC. It is kept here as a record.

It is the 4th strongest of the 50 detections recorded within 20 km of this point since 15 March 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: Severe Thunderstorm Warning issued June 20 at 6:58PM CDT until June 20 at 7:30PM CDT by NWS Goodland KS

Nearby, since 15 March 2026

How we know

Confirmed by 2 independent sources, including NOAA.

Our own score for this event is 22 out of 100, at 63 % 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 confidence63%
Coordinates39.1538, -101.3945
Nearest CityGarden City (139 km)
Impact Tierminor
Date2026-06-20 — time not reported by the source
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ee666543db6f32af9ad81a623bee9706

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescSheridan, KS; Thomas, KS; Cheyenne, CO; Kit Carson, CO; Sherman, KS; Wallace, KS; Gove, KS; Logan, KS and 1 more areas
HeadlineSevere Thunderstorm Warning issued June 20 at 6:58PM CDT until June 20 at 7:30PM CDT by NWS Goodland KS
Expires2026-06-20T19:30:00-05:00
SenderNameNWS Goodland KS
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.ee666543db6f32af9ad81a623bee9706376a789b.002.1","noaa_urn:oid:2.49.0.1.840.0.6f0dc329a7ad7222612d4ba8fef837673b6ae8db.001.1","noaa_urn:oid:2.49.0.1.840.0.e30d5ea51da1726d0f5145518e6b16b81a0df6fb.001.1","noaa_urn:oid:2.49.0.1.840.0.34cb7dd85874d6345b7b2bc3277894d606bf1660.001.1"]
Iem TypeSummary2
Iem City3 W Monument
Iem CountyLogan
Iem StateKS
Iem WfoGLD
Iem RemarkAbundant blowing dust in the air, with visibility of a half mile or less between Oakley and Winona.
MergedSources[{"id":"iem_2_39.100_-101.050_1781997480000","source":"iem","severity":"low","severityValue":25,"timestamp":1781997480000,"latitude":39.1,"longitude":-101.05}]

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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