Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

HenryUnited 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 1 June 2026 at 17:00 UTC. It is kept here as a record.

It is the 2nd strongest of the 123 detections recorded within 20 km of this point since 2 April 2026. The last comparable one was on 2 June 2026. 21 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 31 at 11:54AM CDT until June 1 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO

An estimated 19,927 people live within 50 km of this point.

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 34 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)34 / 100
Our confidence80%
Coordinates38.4146, -93.8666
Nearest CityWarrensburg (40 km)
Population Exposed19.9K within 50 km
Impact Tiersignificant
Timestamp2026-06-03T06:00:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.1cb96198a1a433087515d4f132f0e364

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyExpected
CertaintyLikely
AreaDescCooper, MO; Saline, MO; Cass, MO; Henry, MO; Johnson, MO; Cole, MO and 5 more areas
HeadlineFlood Warning issued May 31 at 11:54AM CDT until June 1 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-06-01T12:00:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount9
MergedIds["noaa_urn:oid:2.49.0.1.840.0.1cb96198a1a433087515d4f132f0e364a6906eed.001.1","noaa_urn:oid:2.49.0.1.840.0.5c74055bbd1a7a8f7384f4fcfa139b4459a266da.001.1","noaa_urn:oid:2.49.0.1.840.0.4d25dfe1b42523337210a0ffe0233545961bdf85.001.1","noaa_urn:oid:2.49.0.1.840.0.a9ad77ece11877cbb66ab05f5f29100c7191deca.001.1","noaa_urn:oid:2.49.0.1.840.0.5fa71e74da64d41a621f280fade387967062ef58.001.1","noaa_urn:oid:2.49.0.1.840.0.5d8435b4cce8f7f5c3be85eb795a236bd850028c.001.1","noaa_urn:oid:2.49.0.1.840.0.21668ab2901fec0224221c94dedad6d6f7ee95f0.002.1","noaa_urn:oid:2.49.0.1.840.0.21668ab2901fec0224221c94dedad6d6f7ee95f0.003.1","noaa_urn:oid:2.49.0.1.840.0.21668ab2901fec0224221c94dedad6d6f7ee95f0.001.1"]

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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