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

Parts of Somerset and Middlesex experienced severe flooding during Monday’s storms, necessitating dozens of water rescues in several towns. High temperatures on Wednesday will climb into the upper 80s to low 90s with a heat index in the low to mid 90s.

There’s been an abnormal amount of extreme rainfall across the United States in recent days. Here’s what’s driving it.

A large percentage of people still unaccounted for were probably visiting the area, Kerr County Judge Rob Kelly said.

Young campers and a dad saving his family were among the dozens killed in the historic flash floods that tore through central Texas over the holiday weekend.

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.

Storms prompted flash flood warnings across the New York City metropolitan area Monday night, with photos showing severe flooding across the city and in parts of New York state and New Jersey. Heavy rain moved through the region Monday,