Helene will strengthen to a hurricane Tuesday night, and rain is expected to begin in Florida Wednesday afternoon into Thursday morning.

On Thursday evening, Helene will make landfall along Florida’s Big Bend area, located between Tallahassee and Gainesville.

Storm surge could reach up to 15 feet in the Big Bend area.

Heavy rain and strong winds are also major threats.

A hurricane watch is in effect for Florida’s Gulf Coast and a tropical storm watch was issued from Orlando to the Florida Keys.

By Thursday night into Friday, the storm will quickly push into Georgia with very heavy rain, gusty winds and possible flash flooding.

This weekend, the storm will stall over the Mid-South, bringing heavy rain and possible flooding to the Tennessee, Ohio and Mississippi River Valleys.

A flood watch has been issued in Florida from Fort Myers to Tampa to Tallahassee, as well as in southern Georgia and Alabama.