Weather Alerts For Eureka, MO
Flood Warning
-Flood Statement National Weather Service St Louis MO 1005 AM CDT Mon Mar 9 2026 ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Kaskaskia River at Carlyle. Meramec River at Valley Park. Meramec River near Eureka. Meramec River near Sullivan. River forecasts are based on observed precipitation and forecast precipitation for the next 48 hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx && 1005 AM CDT Mon Mar 9 2026 ...FLOOD WARNING NOW IN EFFECT UNTIL LATE WEDNESDAY NIGHT... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Meramec River near Eureka. * WHEN...Until late Wednesday night. * IMPACTS...At 22.0 feet, Willman Road near the Highway 109 bridge becomes inundated and impassable. * ADDITIONAL DETAILS... - At 9:30 AM CDT Monday the stage was 21.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Monday was 23.2 feet. - Forecast...The river will fall to 21.2 feet this afternoon. It will then rise to 21.7 feet tomorrow morning. It will fall below flood stage late tomorrow evening to 8.3 feet early Saturday afternoon then rise again. - Flood stage is 19.0 feet. && All Times CDT Fld Observed Forecasts (7:00 am) Location Stg Stage Tue Wed Thu Fri Sat Meramec River Eureka 19.0 21.3 21.7 17.3 11.3 8.4 8.3 &&
Pollen Alert
-Pollen Index: 9.6 Pollen Level: medium-high Predominant Pollen: Maple, Cedar/Juniper and Alder The amount of pollen in the air for Monday will be increasing in the high range. Since the weather has a major influence on pollen dispersal, this increase is due in part to higher temperatures and windy conditions.