Tropical Storm Katrina has strengthened over the central Bahamas and is moving toward Florida, where it is expected to hit later this week.

The U.S. National Hurricane Center reports a tropical storm warning remains in effect for the central and northern Bahamas.  It says Katrina is expected to bring heavy rains and batter the shore with large and dangerous waves. 

The weather service also issued a tropical storm warning and a hurricane watch for the southeast Florida coast from Vero Beach southward to Florida City.

On Tuesday, tropical storm Jose dumped heavy rains on the Gulf of Mexico.

Some information for this report provided by Reuters and AP.