Heavy rain Sunday caused severe weather conditions that could linger for days.
The National Weather Service issued a tornado warning for east-central Cole County, northeastern Osage County and southern Callaway County around 3 p.m. Sunday. After about 22 minutes, the storm weakened and the warning expired.
"It was a lot of lightning, but they did not have very severe activity with them," Walsh said. "I think the storms were a lot of rain and not a lot of bite."
Heavy rain doused portions of Missouri on Sunday, with 2.6 inches falling on Jefferson City and 1.99 inches on Columbia, Walsh said.
While a few Osage County residents reported pea-sized hail Sunday, no significant reports of hail came in from areas around Jefferson City, he said.
Missouri River levels were low for much of the summer, but not historically low, Walsh said. Rain in upper portions of the Missouri River Basin over the past few weeks have raised the river level higher, he said.
With Sunday's rainfall and more expected this week, the NWS issued a flood warning for portions of the Missouri River at Jefferson City, Chamois, Gasconade and Hermann beginning Wednesday morning.
The Missouri River sat at 21.6 feet in Jefferson City at 2 p.m. Tuesday, according to the NWS. Flood stage is 23 feet.
The river is forecast to continue to rise, reaching flood stage on Wednesday morning and cresting around 26.2 feet by Friday afternoon.
NWS forecasts for Jefferson City call for a 20-50 percent chance of thunderstorms Tuesday afternoon. The likelihood of thunderstorms increases to 60-90 percent Tuesday night.
Jefferson City has a 70 percent chance of thunderstorms Wednesday, with potential for about 1 inch of rain, according to the NWS.
At 25 feet, the levee protecting McBaine could be breached, the flood warning notes.
"Rainfall heavier than forecast could cause river levels to rise even higher than predicted," according to the NWS warning. "The National Weather Service will monitor this developing situation and issue follow up statements as conditions or forecasts change."
Meanwhile, at Bagnell Dam, Ameren increased the water discharge rate from 1,390 cubic feet per second at midnight to 26,416 cfs at 9 a.m. Tuesday.
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