MoDOT says roadways have already begun to buckle in parts of Missouri since the sweltering weather arrived last week.
Before 3 p.m. Saturday, wind caused a tree to fall onto Broadway by the College Avenue intersection on the Stephens College campus.
Much of the state is under a heat advisory until at least Monday evening as temperatures in the 90s combine with high humidity to create a heat index of around 100 degrees.
Instead of Canoe for Clean Water, experts will teach about river flooding and ecology from 10 a.m. until 1 p.m. Saturday at Katfish Katy's boat ramp.
The flood level, along with faster river flow, might cause the cancellation of Saturday's race, but the festival would still go on as planned.
A downpour Friday morning prompted the advisory. The National Weather Service said locations along Hinkson Creek downstream from Columbia can expect flooding.
Rich Mathews of The Associated Press got an exclusive look at the spill by joining the dive team that explored how the oil is impacting the Gulf of Mexico.
The Boone Hospital Center's sign caught fire Tuesday night around 11:30 p.m. because of a structural fire. Possible lightning strikes could have occurred as well.
A flash flood watch has been issued through Wednesday morning for Columbia and Boone County.
Boone County is under a flash flood watch until Friday afternoon, the National Weather Service said.
The National Weather Service has advised residents to be aware of possible flash flooding from Wednesday afternoon through Friday afternoon.
Flooding on the St. Louis riverfront forced the President Casino to close and submerged some roads. Flash flooding is blamed in two Missouri deaths.
Because of a rainy forecast, the MU Honors College commencement ceremony at 9 a.m. Saturday will now be held in Mizzou Arena instead of the Francis Quadrangle.
Boone County is under a flood warning until 4:30 p.m. Thursday. Flooded Boone County roads include Tri-City Lake Road at Highway CC, Blackfoot Road at the north county limits, Easley River Road near Cooper's Landing, Stone Drive near Dripping Springs Road, Brushwood Lake Road west of Scott Boulevard and Wilcox Road at Route E. A flash flood watch continues through Thursday evening.
The National Weather Service in St. Louis has issued a flash flood warning for Boone County until 11 a.m. A flash flood warning means flooding is imminent or occurring, according to the service.
High winds between 9 p.m. and midnight tonight could accompany thunderstorms passing through Columbia.
It's too early to say when the thunderstorms might start. Check back for more updates.
Strong wind gusts, large hail and frequent lightning are predicted for Boone County and all adjacent counties.
Boone County is under a flash flood watch until 7 p.m.