This alert expired on 19 May 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 48 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. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 18 at 8:24AM CDT until May 22 at 4:00PM 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
- June 13, 2026 · score 37 · 3.9 km
- May 20, 2026 · score 43 · 14.0 km
- June 8, 2026 · score 22 · 24.0 km
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 81 % 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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 39.4324, -93.9727 |
| Nearest City | Liberty (43 km) |
| Population Exposed | 141.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T09:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.2909628fc4a415d5ac5a2b7a211bbde1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Cass, MO; Henry, MO; Johnson, MO; Bates, MO; Cass, MO; Henry, MO; Daviess, MO; Gentry, MO and 4 more areas |
| Headline | Flood Warning issued May 18 at 8:24AM CDT until May 22 at 4:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-18T20:30:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2909628fc4a415d5ac5a2b7a211bbde1095ae533.001.1","noaa_urn:oid:2.49.0.1.840.0.2909628fc4a415d5ac5a2b7a211bbde1095ae533.002.1","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.c01075cb7f802aaca9124e25d5b40fd2aebe1676.001.1","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.
Want to know when something happens in this area?
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.