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

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

Heavy rain and thunderstorms are expected across Northeast Ohio on Wednesday, with forecasters warning of a heightened risk for localized flooding — especially in urban areas.

New Jersey is under a state of emergency after a flash flood caused at least two deaths in Plainfield and damage across Union County.

In Plainfield, New Jersey, two people were killed when their car was swept into Cedar Brook, city officials said. This comes days after two others were killed in severe storms in Plainfield on July 3.

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

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.

The Center Valley area in Upper Saucon Township, where flooding was reported along Route 309, had a recorded 6 inches of rainfall, making it the highest rainfall total in the Lehigh Valley, according to the National Weather Service in Mount Holly, New Jersey. Other areas had about 1 or 2 inches of rain.

Camp Mystic's executive director began evacuating campers approximately 45 minutes after the National Weather Service issued a "life-threatening flash flooding" alert.

New York is cleaning up and trying to dry out after Monday night's torrential rains caused flash flooding and damage.