Flood Warning Issued for Meramec River in Crawford and Washington Counties

Source: NOAA · East Central Missouri

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The National Weather Service has issued a Flood Warning for the Meramec River near Sullivan and Steelville, with minor flooding expected to impact Missouri Route N.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on March 10, 2026 and geographically references East Central 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, Missouri) 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 Meramec River. The alert was issued on March 5 at 7:28 AM CST and is currently in effect.

Affected Areas

The warning covers the Meramec River near Sullivan and Steelville, specifically affecting Crawford and Washington counties in Missouri.

What You Should Do

Motorists are urged to "Turn around, don't drown" when encountering flooded roads. The National Weather Service warns that most flood deaths occur in vehicles. Residents should avoid flooded areas and monitor local stream information.

Expected Conditions

Minor flooding is forecast for the area. As of 6:29 AM CST on Thursday, the river stage was 9.4 feet. The river is expected to rise above the flood stage of 11.0 feet late this morning and is forecast to crest near 18.0 feet on Friday morning.

Regarding specific impacts, Missouri Route N is expected to be closed in both directions if the river reaches a height near 18.5 feet.

Timeline

The Flood Warning is effective until late Sunday night, March 8, 2026. The river is expected to rise above flood stage on Thursday morning, March 5, and remain elevated through the weekend.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
The National Weather Service has issued a Flood Warning for the Meramec River near Sullivan and Steelville, with minor flooding expected to impact Missouri Route N.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects East Central Missouri. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.