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 22 May 2026 at 13:30 UTC. It is kept here as a record.
It is the 166th strongest of the 236 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 4 May 2026. 18 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 21 at 8:26AM CDT until May 24 at 2:23AM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 774,247 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- March 16, 2026 · score 48 · 5.5 km
- May 23, 2026 · score 52 · 12.2 km
- June 8, 2026 · score 43 · 14.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 48 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.0303, -90.0776 |
| Nearest City | Godfrey (12 km) |
| Urban exposure index (PEI) | 774.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T08:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.1020fe0a513ca70558cb6c24c9ce9792 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-23T08:00:00.000Z.
First archived: 2026-05-21T15:01:38.979Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Buchanan, MO; Platte, MO; St. Clair, MO; Vernon, MO and 28 more areas |
| Headline | Flood Warning issued May 21 at 8:26AM CDT until May 24 at 2:23AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-22T08:30:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 37 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1020fe0a513ca70558cb6c24c9ce97924474da54.003.1","noaa_urn:oid:2.49.0.1.840.0.1020fe0a513ca70558cb6c24c9ce97924474da54.002.1","noaa_urn:oid:2.49.0.1.840.0.1020fe0a513ca70558cb6c24c9ce97924474da54.001.1","noaa_urn:oid:2.49.0.1.840.0.45a0f1baebae72458635bbce7cedd208c6451a13.001.1","noaa_urn:oid:2.49.0.1.840.0.45a0f1baebae72458635bbce7cedd208c6451a13.002.1","noaa_urn:oid:2.49.0.1.840.0.676fa3a7a29f01c364eb65d3982242e3a152ee1c.001.1","noaa_urn:oid:2.49.0.1.840.0.790aaeda145502fc2189d45d5a252b4f92fe367e.002.1","noaa_urn:oid:2.49.0.1.840.0.790aaeda145502fc2189d45d5a252b4f92fe367e.004.1","noaa_urn:oid:2.49.0.1.840.0.790aaeda145502fc2189d45d5a252b4f92fe367e.003.1","noaa_urn:oid:2.49.0.1.840.0.790aaeda145502fc2189d45d5a252b4f92fe367e.001.1","noaa_urn:oid:2.49.0.1.840.0.81bf49bee195497dad7501d92040c16bdb60e2b9.001.1","noaa_urn:oid:2.49.0.1.840.0.a6e0650c3222075599057ce2e812dba7e082bf9b.002.1","noaa_urn:oid:2.49.0.1.840.0.a6e0650c3222075599057ce2e812dba7e082bf9b.001.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.002.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.001.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.005.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.003.1","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:2.49.0.1.840.0.2a48b15ca1ff51fc2c6edca517de7f5a569c9542.001.1","noaa_urn:oid:2.49.0.1.840.0.51c81537d0d40a6c5ff9f397b57190fbbd942c25.001.1","noaa_urn:oid:2.49.0.1.840.0.a007a4b93819df5d693d53d935d7e012c01c59b7.001.1","noaa_urn:oid:2.49.0.1.840.0.201d4d0e609856f1e9fa489089d3ee1517d096e7.001.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.006.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.003.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.002.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.004.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.005.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.001.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.002.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.004.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.003.1","noaa_urn:oid:2.49.0.1.840.0.e3425af4cf9e037b8f954b86ae3bbdcd044d71fa.001.1","noaa_urn:oid:2.49.0.1.840.0.e3425af4cf9e037b8f954b86ae3bbdcd044d71fa.002.1","noaa_urn:oid:2.49.0.1.840.0.2c66ac5962737645cde5d5a3da869aedeaae8db8.001.1","noaa_urn:oid:2.49.0.1.840.0.ea5691a139abb1b6346594c2fc48331d8f730710.001.1","noaa_urn:oid:2.49.0.1.840.0.258988fe1ac413e4df2f30b4dab2ab597a67710b.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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