Flood Warning Issued for Black River Near Annapolis in Reynolds County
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A Flood Warning is in effect for the Black River near Annapolis in Reynolds County, Missouri, as minor flooding is forecast to impact local roadways through Monday night.
What this NWS weather alert tells you, and what most readers miss
This notice was issued by NOAA on March 13, 2026 and geographically references Reynolds County, 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 regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.
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.
For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, Flood Warning, Reynolds County) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.
Alert Details
The National Weather Service in St. Louis has issued a Flood Warning for the Black River near Annapolis. The warning is effective from Saturday afternoon, March 7, through late Monday night, March 10.
Affected Areas
The primary area affected is Reynolds County, Missouri, specifically the regions surrounding the Black River near Annapolis.
What You Should Do
Residents and motorists are urged to "Turn around, don't drown" when encountering flooded roads. Most flood-related deaths occur in vehicles. Exercise extreme caution at night when flood hazards are more difficult to recognize. Avoid areas known to flood and monitor local stream information via the National Weather Service.
Expected Conditions
Minor flooding is forecast for the Black River. As of 11:15 AM CST on Saturday, the river stage was measured at 6.4 feet. The river is expected to rise above the 8.0-foot flood stage late this afternoon. A crest of 9.0 feet is anticipated just after midnight tonight. At this level, County Road 372 is expected to begin flooding.
Timeline
- Onset: Saturday afternoon, March 7, at approximately 4:49 PM CST.
- Peak: The river is forecast to crest at 9.0 feet shortly after midnight tonight.
- Recession: The river is expected to fall below flood stage by Sunday afternoon.
- Warning Duration: The alert remains in effect until 12:00 AM CDT on Monday night/Tuesday morning.
Original source: NOAA Official Notice ↗
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