Story updated at 10:30 p.m. with more information from Ameren.
ST. CHARLES COUNTY • Power was out for at least 3,800 customers in and around O'Fallon and St. Peters, officials said at 10:30 p.m. Wednesday.
At around 8:30 p.m., the number of customers without power in the area hovered around 4,500, according to Ameren officials, but crews have since been sent out to assess the damage and restore power, Ameren Missouri spokesman Bryan Daniels said.
"We understand outages can be inconvenient, and we'll work as fast and as safely as possible to restore customers who are affected by this weather event," Daniels said.
A flash flood warning was in effect for much of the eastern portion of St. Charles County until 2:15 a.m. Thursday.
Central County Fire and Rescue Assistant Chief Steve Brown confirmed that the fire department responded to downed wires. St. Charles County police officials confirmed similar reports.
St. Peters police officials confirmed that some roadways were shut down by standing water, including the intersection of Mexico Road and South Church Road and a portion of Salt River Road.
O'Fallon police officials said they were seeing high water on several roads and advised drivers not to drive through floodwater.