Showers and thunderstorms are forecast each day this weekend, starting July 18, as areas of thunderstorms and heavy rain move across the country. A heat wave is also expected. According to the National Weather Service in Wilmington, there is a heightened flooding threat for portions of the Ohio Valley.

“The biggest thing is making sure you have a plan ahead of time when it’s not raining,” he said. “I highly recommend weather.gov/safety/flood. That will walk you through flood preparedness tips and what to do before, during, and after an event.”

Early on Thursday morning the National Weather Service's Lake Charles office announced that it would be expanding the flash flood warning that previously went as far west as Vermillion Parish to include Calcasieu, Cameron, Allen, Jefferson Davis and Beauregard parishes. The watch is in effect from 7 a.m. on Thursday to 7 p.m. on Saturday.

"Pine Valley is one of our big concerns with the burn scar from the forest fire," said Washington County Emergency Services Director Jason Whipple. "And that tends to be a problematic area because of the runoff that comes down there and the debris that comes with it.

With flash flooding in the headlines recently, why hasn't Omaha experienced any significant flooding from our recent rains? See the reasons why here:

Several historic and deadly flash flooding events have occurred in the U.S. just within the month of July alone. Experts talk about what factors are increasing the risks.

Tens of millions of people are at risk of dangerous flash floods in pockets of nearly every region of the contiguous United States Friday, as the nation’s summer of flooding continues.

"Life-threatening flash flooding" is ongoing in Kerr and Gillespie Counties -- including the areas of Kerrville, Comfort, Ingram, Hunt, Mountain Home, Waltonia, Harper, Kerrville-Schreiner Park and Cypress Creek -- according to the National Weather Service.