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

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

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.

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.

Hundreds of New Jersey homes were damaged by flooding Monday​, and many families are just beginning the process of filing insurance claims.

EDT the National Weather Service issued a flash flood warning in effect until 5:15 p.m. EDT for Macomb and Oakland counties.

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

A flash flood warning was in effect in New York City until 9:45 p.m., and New Jersey Gov. Phil Murphy declared a state of emergency. Middlesex, Morris and Somerset counties remained under a flood warning until 7:15 a.m. Tuesday.