The National Weather Service urged people to avoid travel if a flash flood warning was in place for their area.

A flash flood warning was issued by the NWS Las Vegas NV on Thursday at 4:51 p.m. in effect until 8 p.m. for San Bernardino County.

Flash floods are occurring across the U.S., from Texas to New Jersey. Here's what you should know as risks escalate.

On Thursday at 5:40 p.m. the NWS Raleigh NC issued a flash flood warning in effect until 8:45 p.m. for Davidson and Forsyth counties.

New York and New Jersey hit by torrential rain and flash floods, forcing highway closures, suspending subway lines and flight delays.

The Missouri River is not expected to reach any flood stage in Kansas City, but is predicted to cause moderate flooding downstream in Napoleon and Miami, Missouri. The major river has already risen 5 feet, and is forecasted to rise another 3 feet before its crest at around 7 p.m.

The National Weather Service reported that multiple people had to be rescued from floodwaters in Ruidoso on Thursday afternoon.

The risk for flash flooding won't just be confined to today, as data shows the risk for flash flooding remaining in place Thursday, Friday, Saturday, and likely on Sunday too. There will be some big gaps in the rain, though, including most of Friday, looking dry and pleasant.