Calamity
MediumSevere WeatherCalamity Score: 22

Severe Weather in United States

MercerUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 1 minute 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 7 June 2026 at 04:00 UTC. It is kept here as a record.

It is the 15th strongest of the 47 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued June 6 at 4:53PM CDT until June 6 at 11:00PM CDT by NWS Kansas City/Pleasant Hill MO

Nearby, since 17 March 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 59 % 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 confidence59%
Coordinates40.3242, -93.3695
Nearest CityKirksville (69 km)
Impact Tierminor
Timestamp2026-06-06T21:53:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6af098800ad14914febed4db9fe3b766

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescPutnam, MO; Sullivan, MO; Grundy, MO; Mercer, MO; Sullivan, MO; Daviess, MO; Grundy, MO; Harrison, MO
HeadlineFlash Flood Warning issued June 6 at 4:53PM CDT until June 6 at 11:00PM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-06-06T23:00:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount3
MergedIds["noaa_urn:oid:2.49.0.1.840.0.6af098800ad14914febed4db9fe3b76673513f7b.001.1","noaa_urn:oid:2.49.0.1.840.0.7f542f6b2ffc61e57955df11d1e4deb4d79f5323.001.1","noaa_urn:oid:2.49.0.1.840.0.d1e9d42bba7a10ffbb123f69be38454d31a66d41.001.1"]

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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