This alert expired on 1 June 2026 at 01:00 UTC. It is kept here as a record.
It is the 37th strongest of the 110 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 19 May 2026. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 30 at 9:48AM CDT until May 31 at 8:00PM CDT by NWS St Louis MO
An estimated 171,925 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 1, 2026 · score 46 · 7.7 km
- July 21, 2026 · score 28 · 7.7 km
- July 9, 2026 · score 34 · 7.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 38.5311, -92.2211 |
| Nearest City | Jefferson City (7 km) |
| Population Exposed | 171.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T16:32:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5831be82d0452cc03ca5ec97a72786d20e6eb497.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Cole, MO |
| Headline | Flood Warning issued May 30 at 9:48AM CDT until May 31 at 8:00PM CDT by NWS St Louis MO |
| Expires | 2026-05-31T20:00:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 37/100, near Jefferson City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.