Flood Warning issued for Callaway and Osage Counties, MO
This alert is no longer in effect.
NOAA issued it on May 31, 2026, 2 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS St Louis MO has issued a Flood Warning for the Missouri River near Chamois from Thursday morning to Monday afternoon.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Callaway and Osage Counties, MO
- Issued
- May 31, 2026
- Issuing authority
- NWS St Louis MO
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Callaway and Osage Counties, MO.
Alert Details
A Flood Warning has been issued by the National Weather Service St Louis MO. The alert was sent at 2026-05-19T12:13:00-05:00 and is effective from 2026-05-21T08:30:00-05:00 until 2026-05-25T13:00:00-05:00.
Affected Areas
The warning covers Callaway County, MO and Osage County, MO, specifically the Missouri River near Chamois.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Rainfall heavier than forecast could cause river levels to rise even higher than predicted.
Expected Conditions
Minor flooding is forecast. At 17.0 feet (flood stage), lower lying bottom land begins to flood. The river is forecast to rise above flood stage Thursday morning to 18.5 feet early Saturday morning before falling below flood stage early Sunday morning.
Timeline
The Flood Warning is in effect from Thursday morning (2026-05-21) to Monday afternoon (2026-05-25).
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (948 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 31, 2026.
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