Tropical Storm Milton is likely to become a major hurricane in three days as it aims for Florida's already storm-battered west coast, federal forecasters said Saturday.The National Hurricane Center said in a forecast discussion the storm was rapidly evolving into "an intense hurricane with multiple life-threatening hazards" for the coastline north and south of the Tampa Bay region.

Tropical Storm Milton formed in the Gulf of Mexico on Saturday afternoon with the risk of "life-threatening impacts" to Florida's west coast, according to the National Hurricane Center.