MIAMI (AP) — Tropical Storm Alex, the first named storm of the Atlantic hurricane season, formed Sunday morning in the Gulf of Mexico on a track to come ashore in southern Florida with heavy rains and gusty wind. National Hurricane Center forecasters said in a 5 a.m. advisory that Alex had sustained winds of 50 mph (80 kph) and was located about 270 miles (435 kilometers) northeast of Fort Pierce, Florida. Parts of South Florida were experiencing road flooding from heavy rain and wind Saturday. Officials in Miami warned drivers about road conditions as many cars were stuck on flooded streets. The city was towing stranded vehicles from flooder roadways. Miami Beach Mayor Dan Gelber said the storm tested the system of drainage pumps the city has recently installed as climate change has increasingly made flooding an issue in the low-lying area. Alex is a new version of the storm that was called Hurricane Agatha when it slammed into Mexico’s Pacific Coast earlier this week, killing at least 11 people and leaving 20 missing. It got a new name once the storm crossed Mexico into the Atlantic basin. A tropical storm warning was in effect for Bermuda.