This alert expired on 22 May 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 58 recorded within 20 km of this point since 15 March 2026 — 32 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 20 at 7:59PM CDT until May 23 at 8:42PM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 173,218 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 22, 2026 · score 43 · 0.8 km
- March 16, 2026 · score 43 · 10.1 km
- March 15, 2026 · score 43 · 10.1 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 | 39.0704, -90.9770 |
| Nearest City | Wentzville (31 km) |
| Population Exposed | 173.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-21T18:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Linn, MO; Livingston, MO; Daviess, MO; Livingston, MO; Carroll, MO; Chariton, MO; Linn, MO; Livingston, MO and 35 more areas |
| Headline | Flood Warning issued May 20 at 7:59PM CDT until May 23 at 8:42PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-21T20:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 42 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.005.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.001.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.003.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.002.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.004.1","noaa_urn:oid:2.49.0.1.840.0.b97ca6a14a1edb14f81894cd575999c5a476ef62.001.1","noaa_urn:oid:2.49.0.1.840.0.b58ca7fce4d0ad253db9c2fa34889635fa81d240.001.1","noaa_urn:oid:2.49.0.1.840.0.b58ca7fce4d0ad253db9c2fa34889635fa81d240.002.1","noaa_urn:oid:2.49.0.1.840.0.13d2c6b57d6de597cf9950c8383fff4def48cc58.001.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.002.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.003.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.001.1","noaa_urn:oid:2.49.0.1.840.0.892c94d9b3df6a67156fae5c9f2f5b1cec0fe0ec.002.1","noaa_urn:oid:2.49.0.1.840.0.37bacc726298d1bd6c3e6545f0ab5217063ad470.001.1","noaa_urn:oid:2.49.0.1.840.0.31010818d45975b2461cf5907c54c1a3a4c51073.001.1","noaa_urn:oid:2.49.0.1.840.0.361c1ed1fa8fd2969ff31bb1a8512c75b3164c96.001.1","noaa_urn:oid:2.49.0.1.840.0.b9b5caa5456476ffe2f16fc632f97310a14a1638.001.1","noaa_urn:oid:2.49.0.1.840.0.59030682c609e0ef1eea95bf6f66d418689586bb.004.1","noaa_urn:oid:2.49.0.1.840.0.59030682c609e0ef1eea95bf6f66d418689586bb.001.1","noaa_urn:oid:2.49.0.1.840.0.59030682c609e0ef1eea95bf6f66d418689586bb.002.1","noaa_urn:oid:2.49.0.1.840.0.59030682c609e0ef1eea95bf6f66d418689586bb.003.1","noaa_urn:oid:2.49.0.1.840.0.59030682c609e0ef1eea95bf6f66d418689586bb.005.1","noaa_urn:oid:2.49.0.1.840.0.bb9a5205a2eb34f619aa6e8852df598eb07a0878.001.1","noaa_urn:oid:2.49.0.1.840.0.285227f5598727227cd2e1dfb4114e27859a4004.001.1","noaa_urn:oid:2.49.0.1.840.0.0cfbe74f43bf96e8434d70bd32597e80978507f9.001.1","noaa_urn:oid:2.49.0.1.840.0.892c94d9b3df6a67156fae5c9f2f5b1cec0fe0ec.001.1","noaa_urn:oid:2.49.0.1.840.0.5db15c5f9c6afdf6513f8d44e85f23e8c7bd7b7a.001.1","noaa_urn:oid:2.49.0.1.840.0.1fbff4a434ae70f134160050218e065f86cf857a.001.1","noaa_urn:oid:2.49.0.1.840.0.d27e94a437359a5e5d54f0311320eb1bc8af150a.001.1","noaa_urn:oid:2.49.0.1.840.0.201d4d0e609856f1e9fa489089d3ee1517d096e7.001.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.005.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.003.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.001.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.006.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.004.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.002.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.003.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.004.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.001.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.002.1","noaa_urn:oid:2.49.0.1.840.0.9951cc7a5b403610bfe9986bda2647789c79aacf.001.1","noaa_urn:oid:2.49.0.1.840.0.00ce4b41f16046c97bd76fdfd53e412dd5fe61b8.001.1"] |
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.
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.