Tropical Storm Arlene is making landfall on Mexico's central Gulf coast near Cabo Rojo with maximum sustained winds of 65 mph.
Authorities in the states of Veracruz, Tamaulipas and San Luis Potosi prepared for possible flooding as rain began falling along the coast Wednesday.
Officials have warned residents about impending winds and rain. Forecasters said extreme south Texas also could get rain. The National Hurricane Center in Miami says Arlene, the first named storm of the Atlantic hurricane season, is expected to weaken and dissipate on Friday.
Early Thursday, the storm was centered about 35 miles north of Tuxpan, Mexico, and moving west near 9 mph.