Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

AudrainUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 8 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 19 May 2026 at 13:30 UTC. It is kept here as a record.

It is the 67th strongest of the 151 detections recorded within 20 km of this point since 4 April 2026. The last comparable one was on 19 May 2026. 10 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 18 at 8:25PM CDT until May 20 at 3:02PM CDT by NWS Kansas City/Pleasant Hill MO

Nearby, since 4 April 2026

How we know

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

Our own score for this event is 22 out of 100, at 60 % 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 confidence60%
Coordinates39.1758, -91.8165
Nearest CityColumbia (51 km)
Impact Tierminor
Timestamp2026-05-20T17:15:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.0a619cc5aa01aaa19267f564450aa834

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyObserved
AreaDescAtchison, MO; Holt, MO; Ray, MO; Linn, KS; Bates, MO and 38 more areas
HeadlineFlood Warning issued May 18 at 8:25PM CDT until May 20 at 3:02PM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-05-19T08:30:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount45
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Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

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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