Right now
The most recent data we hold from NOAA arrived 5 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 24 May 2026 at 13:15 UTC. It is kept here as a record.
It is the 4th strongest of the 83 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 22 at 8:11PM CDT until May 24 at 5:00PM CDT by NWS St Louis MO
Urban PEI: 41,443 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- May 23, 2026 · score 34 · 0.0 km
- May 23, 2026 · score 34 · 8.8 km
- June 12, 2026 · score 28 · 10.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.0281, -93.3350 |
| Nearest City | Sedalia (38 km) |
| Urban exposure index (PEI) | 41.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T01:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.65be55235922be8559ee808953ee696c |
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: 2026-05-23T01:11:00.000Z.
First archived: 2026-05-23T13:10:21.154Z. 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 | Gasconade, MO; Montgomery, MO; Callaway, MO; Osage, MO; Carroll, MO; Chariton, MO and 3 more areas |
| Headline | Flood Warning issued May 22 at 8:11PM CDT until May 24 at 5:00PM CDT by NWS St Louis MO |
| Expires | 2026-05-24T08:15:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.65be55235922be8559ee808953ee696c29ea9a55.002.1","noaa_urn:oid:2.49.0.1.840.0.65be55235922be8559ee808953ee696c29ea9a55.001.1","noaa_urn:oid:2.49.0.1.840.0.5e2081bcdc4337cf311b95d0437f05abc22dc7b4.002.1","noaa_urn:oid:2.49.0.1.840.0.5e2081bcdc4337cf311b95d0437f05abc22dc7b4.003.1","noaa_urn:oid:2.49.0.1.840.0.85951cdf2a250b656d17cb7256f1fffd159b542d.001.1","noaa_urn:oid:2.49.0.1.840.0.20539f593b8bde02ebd1c6152583f2fe239aa8b0.001.1","noaa_urn:oid:2.49.0.1.840.0.4912793bb84a925b8245d005074d8976773d9604.002.1"] |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?