Tropical storm warning issued for Louisiana
In its 4 p.m. update, the NHC said the center of the storm was located in the Gulf of Mexico 45 miles east of Port O'Connor, Texas, and 145 miles southwest of Port Arthur, Texas.
Harvey's winds picked up speed from 40 mph up to 45 mph as it reached the gulf. It was moving east-southeast at 3 mph.
The storm was expected to move "erratically" east-southeast through Monday night before turning northeast Tuesday. The center of the storm was forecast to be offshore through Tuesday night.
A tropical storm warning was in effect from Mesquite Bay, Texas, east to Intracoastal City, La. There was a storm surge watch in effect for Port Bolivar, Texas, to Morgan City, La. If Harvey's wind speeds drop below 40 mph, it becomes a tropical depression.
Tropical-storm-force winds extend outward up to 175 miles, primarily over water to the east and northeast of the center, forecasters said.
After Harvey moves off the coast, it is projected to return to a northeasterly track and pass from southeast Texas and southwest Louisiana up through east Texas and the entire northern portion of Louisiana.
The NHC is also watching Tropical Cyclone 10, which was stationary off the U.S. Southeast, which has maximum sustained winds of 35 mph. A tropical storm watch is in effect for parts of South Carolina and North Carolina. ■