(WRCB) -- A series of showers and thunderstorms swept through the Tennessee Valley Tuesday afternoon, causing a number of flash floods throughout the region, especially in Chattanooga.

Among the harder hit areas were Market Street downtown and 20th Street on the Southside that affected at least one car dealership.

Witnesses report that UTC's Frist Hall has experienced flooding and other nearby streets are being shut down to traffic until the waters recede.

As of 4:30 p.m., EPB is reporting 660 customers are without power in the Red Bank, Harrison, and Signal Mountain areas.

Chief Meteorologist Paul Barys says we can expect numerous showers and storms through Thursday. Some heavy rain could be a problem on occasion, resulting in rising water on the roads. Small hail and gusty winds will also be likely.

The good news for those battling the extreme heat the past two weeks, temperatures will be cooler for the rest of the this week.

Get the latest weather information where ever you are with the WRCB Weather App for iPhone,iPad and Droid. Find WRCB Weather on any mobile device at http://m.wrcbtv.com.

Share your weather photos on Eyewitness! Email them to pix@wrcbtv.com or upload them at http://eyewitness.wrcbtv.com.

And, join the conversation with more than 60,000 viewers at Facebook.com/WRCBtv.