Calamity
MediumSevere WeatherCalamity Score: 43

Severe Weather in United States

AudrainUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 12 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 16:15 UTC. It is kept here as a record.

No stronger detection stands among the 153 recorded within 20 km of this point since 4 April 2026 — 80 others scored the same. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 18 at 11:07PM CDT until May 20 at 10:54PM CDT by NWS Kansas City/Pleasant Hill MO

An estimated 129,330 people live within 50 km of this point.

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 43 out of 100, at 80 % 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)43 / 100
Our confidence80%
Coordinates39.1865, -91.9575
Nearest CityColumbia (42 km)
Population Exposed129.3K within 50 km
Impact Tiersignificant
Timestamp2026-05-20T18:00:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.1c61d0bbc649d5a35d2065be5968a0bc

Score Breakdown

35
intensity
70
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyObserved
AreaDescAndrew, MO; Nodaway, MO; Daviess, MO; Gentry, MO; Atchison, MO; Holt, MO; Nodaway, MO and 47 more areas
HeadlineFlood Warning issued May 18 at 11:07PM CDT until May 20 at 10:54PM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-05-19T11:15:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount54
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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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Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.