Forecasters warn that slow-moving storms could bring heavy downpours to already saturated areas, increasing the risk of flash flooding.

Severe thunderstorms will head east by Saturday, impacting eastern Michigan and parts of northern Indiana. Rain from 1 to 2 inches is possible as the system tracks east, but some areas could see isolated amounts of 3 to 5 inches through the weekend.

Governor Abbott activates Texas emergency response resources ahead of severe weather and potential flash flooding.

"It's not community to community. It's a national system," Sen. Maria Cantwell said on "Face the Nation with Margaret Brennan."

Devastating floods tore through central Texas over the Fourth of July holiday weekend. Meteorologist Katie Horner explains what caused the rare weather event and what people in the metro need to learn before the next disaster strikes.

As ominous storm clouds gather once more over Texas, the desperate search for more than 150 individuals still missing since the catastrophic July 4 floods has now stretched into its second week.

Flooding is the deadliest natural disaster facing Oklahomans, a threat far greater than tornadoes. In the United States, flooding kills an average of 103 people a year. Tornadoes, however, caused 48 deaths on average during the same period, according to the National Weather Service.

A perfect storm of a slow-moving pocket of moist air, parched terrain and a hilly area prone to flash flooding unleashed absolute hell on Texas Hill Country — where more than 50 people have died, according to meteorologists.