“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.”

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.

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.

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.

"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.

As the National Weather Service (NWS) issued fresh flash flood warnings for Texas on Sunday, emergency crews were forced to suspend their operations