A powerful superstorm is heading toward the U.S., bringing “severe winds, tornadoes, and devastating flooding” to several states. Meteorologists warn that record-breaking rainfall may strike low-lying and coastal areas, increasing the risk of flash floods and river overflows.

FEMA and the National Weather Service are urging people in high-risk areas to prepare for possible evacuations. “This incident has the potential to rank among the worst flooding catastrophes in recent memory,” officials said. Overflowing rivers, poor drainage, and fast-moving floods are key threats.

The storm is being fueled by “exceptionally warm ocean temperatures and unstable atmospheric conditions,” which are making it grow larger and stronger. It is expected to hit coastal regions and parts of the Midwest especially hard.

Urban areas with outdated drainage systems are at high risk. Meteorologists warn that “even brief bursts of intense rain could produce potentially fatal conditions” in densely populated cities.

Emergency teams are mobilizing shelters, rescue boats, and sandbags. FEMA is working with local agencies to position resources in the most vulnerable zones. Officials stress that “early preparation could mean the difference between safety and disaster” and urge residents to monitor weather alerts, pack emergency kits, and follow evacuation orders.