Flood Warning Issued for Reynolds, MO
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A Flood Warning has been issued by the NWS for Reynolds, MO, with minor flooding expected on the Black River near Annapolis from April 18 until April 20, 2026.
What this NWS weather alert tells you, and what most readers miss
This notice was issued by NOAA on April 27, 2026 and geographically references Reynolds, Missouri. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Weather Alerts - determines the warning protocol behind it, which shapes what protective action (seeking shelter, following evacuation orders if issued, monitoring official updates) is recommended and which agency holds authority to issue or cancel it.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.
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Alert Details
A Flood Warning has been issued by the National Weather Service (NWS) St Louis MO. It is effective from April 18, 2026, at 5:05 PM CDT until April 20, 2026, at 5:00 PM CDT.
Affected Areas
The warning affects Reynolds, MO, specifically the Black River near Annapolis.
What You Should Do
Turn around and do not drive through flooded roads, as most flood deaths occur in vehicles. Monitor for possible heavier rainfall that could raise river levels.
Expected Conditions
Minor flooding is occurring and forecast. The river stage is at 8.9 feet and expected to rise to a crest of 9.0 feet. At 9.0 feet, County Road 372 will begin flooding, with the flood stage at 8.0 feet.
Timeline
The alert is effective from April 18, 2026, at 5:05 PM CDT and ends on April 20, 2026, at 5:00 PM CDT.
Original source: NOAA Official Notice ↗
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