Calamity
MediumSevere WeatherCalamity Score: 43

Severe Weather in United States

RayUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 6 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 03:30 UTC. It is kept here as a record.

No stronger detection stands among the 50 recorded within 20 km of this point since 15 March 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 18 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 18 at 10:23AM CDT until May 23 at 6:13AM CDT by NWS Kansas City/Pleasant Hill MO

An estimated 141,125 people live within 50 km of this point.

Nearby, since 15 March 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%
Coordinates39.4355, -93.9871
Nearest CityLiberty (43 km)
Population Exposed141.1K within 50 km
Impact Tiersignificant
Timestamp2026-05-20T14:15:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.f591fd0273cd7c9c7e32dab2f04e791c

Score Breakdown

35
intensity
70
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyExpected
CertaintyLikely
AreaDescBuchanan, MO; Platte, MO; Andrew, MO; Buchanan, MO and 16 more areas
HeadlineFlood Warning issued May 18 at 10:23AM CDT until May 23 at 6:13AM CDT by NWS Kansas City/Pleasant Hill MO
Expires2026-05-18T22:30:00-05:00
SenderNameNWS Kansas City/Pleasant Hill MO
HasExactCoordstrue
MergedCount20
MergedIds["noaa_urn:oid:2.49.0.1.840.0.f591fd0273cd7c9c7e32dab2f04e791c61a66e09.001.1","noaa_urn:oid:2.49.0.1.840.0.16aca235ca440a3efd82c738b69786e2258c0f95.002.1","noaa_urn:oid:2.49.0.1.840.0.16aca235ca440a3efd82c738b69786e2258c0f95.001.1","noaa_urn:oid:2.49.0.1.840.0.304ed35866ec9ea5e0adb3b680c755f636cff262.002.1","noaa_urn:oid:2.49.0.1.840.0.304ed35866ec9ea5e0adb3b680c755f636cff262.003.1","noaa_urn:oid:2.49.0.1.840.0.304ed35866ec9ea5e0adb3b680c755f636cff262.001.1","noaa_urn:oid:2.49.0.1.840.0.d0dbeabb00aab31c702dba5ae075aefdb995e40e.003.1","noaa_urn:oid:2.49.0.1.840.0.d0dbeabb00aab31c702dba5ae075aefdb995e40e.005.1","noaa_urn:oid:2.49.0.1.840.0.d0dbeabb00aab31c702dba5ae075aefdb995e40e.004.1","noaa_urn:oid:2.49.0.1.840.0.d0dbeabb00aab31c702dba5ae075aefdb995e40e.002.1","noaa_urn:oid:2.49.0.1.840.0.d0dbeabb00aab31c702dba5ae075aefdb995e40e.001.1","noaa_urn:oid:2.49.0.1.840.0.a02204595a494fe97e58e3d5956a48e906ebb1b6.001.1","noaa_urn:oid:2.49.0.1.840.0.a02204595a494fe97e58e3d5956a48e906ebb1b6.003.1","noaa_urn:oid:2.49.0.1.840.0.a02204595a494fe97e58e3d5956a48e906ebb1b6.002.1","noaa_urn:oid:2.49.0.1.840.0.2909628fc4a415d5ac5a2b7a211bbde1095ae533.002.1","noaa_urn:oid:2.49.0.1.840.0.2909628fc4a415d5ac5a2b7a211bbde1095ae533.001.1","noaa_urn:oid:2.49.0.1.840.0.b3b503870f0bc476b9025c53c237593244be9b8a.001.1","noaa_urn:oid:2.49.0.1.840.0.012fdf8b831bec4f1e878c90e37c91bb4b0383e8.001.1","noaa_urn:oid:2.49.0.1.840.0.c01075cb7f802aaca9124e25d5b40fd2aebe1676.006.1","noaa_urn:oid:2.49.0.1.840.0.c01075cb7f802aaca9124e25d5b40fd2aebe1676.005.1"]

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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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.