Calamity
MediumSevere WeatherCalamity Score: 16

Severe Weather in United States

LinnUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

5 other detections within 20 km in the last 24 hours, the nearest 1 km from here.

This alert expired on 9 September 2026 at 23:45 UTC. It is kept here as a record.

It is the 8th strongest of the 26 detections recorded within 20 km of this point since 2 April 2026. Another comparable one was recorded here earlier the same day.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued September 9 at 6:17PM CDT until September 9 at 6:45PM CDT by NWS Kansas City/Pleasant Hill MO

Nearby, since 2 April 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 16 out of 100, at 59 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)16 / 100
Our confidence59%
Coordinates38.0782, -94.6506
Nearest CityPittsburg (74 km)
Impact Tierminor
Timestamp2026-09-09T23:17:00.000Z
Sourcehttps://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6c8a12bf45c61407d489fd995d29e7f1ed41dc2a.001.1

Score Breakdown

35
intensity
0
population
0
cascading
18
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescLinn, KS; Bates, MO; Cass, MO; Henry, MO; Johnson, MO; Pettis, MO; Cass, MO; Johnson, MO and 1 more areas
HeadlineSevere Thunderstorm Warning issued September 9 at 6:17PM CDT until September 9 at 6:45PM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-09-09T18:45:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.6c8a12bf45c61407d489fd995d29e7f1ed41dc2a.001.1","noaa_urn:oid:2.49.0.1.840.0.b6300a71361eba564fce33a27c977d1f79e0067d.001.1","noaa_urn:oid:2.49.0.1.840.0.a2208324d8b07fcffa39163fe993db5b447f8813.001.1","noaa_urn:oid:2.49.0.1.840.0.4d8461de6e5a3cda2916e654c4f0ef2c5004dab2.001.1"]

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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