A flooded street is seen in downtown as Hurricane Ian makes landfall in southwestern Florida, in Fort Myers, Florida, U.S. September 28, 2022. REUTERS/Marco BelloVENICE, Fla., Sept 29 (Reuters) - A weakened but still formidable Hurricane Ian chugged across Florida toward the Atlantic seaboard on Thursday after thrashing the state's Gulf Coast with fierce winds, torrential downpours and raging surf that flooded oceanside communities. Separately, U.S. border authorities said 20 Cuban migrants were missing after their boat sank off the Florida coast as Ian neared the coast on Wednesday. Up to 30 inches (76 cm) of rain was forecast to fall on parts of central Florida, the NHC said. DeSantis said Ian had generated life-threatening storm surges - waves of wind-driven seawater rushing in along the coast - of up to 12 feet (3.7 meters) in some places.

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