Flood Warning Issued for Meramec River Near Arnold Affecting Jefferson and St. Louis Counties

Alert Details

The National Weather Service in St. Louis has issued a Flood Warning for the Meramec River near Arnold. The warning was issued on March 7 at 7:30 PM CST and remains in effect until Tuesday, March 10, at 6:00 PM CDT.

Affected Areas

The alert specifically covers the Meramec River near Arnold, impacting Jefferson and St. Louis counties in Missouri.

What You Should Do

Motorists are advised to “Turn around, don’t drown” when encountering flooded roads, as most flood deaths occur in vehicles. Residents should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at https://water.noaa.gov/wfo/lsx.

Expected Conditions

Minor flooding is forecast for the Meramec River. As of 7:00 PM CST on Saturday, the river stage was 19.7 feet. The river is expected to rise above the flood stage of 24.0 feet tomorrow afternoon, reaching a peak of 24.5 feet early Monday morning.

Regarding specific local impacts, at 24.7 feet, Hawkins Road south of Meramec Bottom Road begins flooding. Forecasts are based on observed precipitation and forecast precipitation for the next 48 hours.

Timeline

• Onset: Sunday afternoon, March 8, at approximately 4:25 PM CST.
• Peak: Early Monday morning, March 9, at 24.5 feet.
• Recession: The river is expected to fall below flood stage late Monday morning.
• Expiration: The warning concludes Tuesday evening, March 10, at 6:00 PM CDT.