Harvey downgraded to tropical depression, Irma forms in Atlantic
The NHC discontinued all watches and warnings in its 10 p.m. advisory.
The storm was located about 30 miles southwest of Alexandria, La., and was traveling north-northeast at a speed of 8 mph. It had maximum sustained winds of 35 mph.
The storm hit Texas Friday as a Category 4 hurricane and has slowly moved in a northeast direction since. It's expected to move across the Lower Mississippi Valley and Tennessee Valley through Thursday.
The expected heavy rains spreading northeastward from Louisiana into western Kentucky may also lead to flash flooding and increased river and small stream flooding, the NHC said.
Tropical Storm Irma became the ninth named Atlantic storm of the season, the National Hurricane Center announced Wednesday.
The storm formed in the far eastern open Atlantic Ocean and as of the NHC's 6 p.m. EDT advisory, Irma's center was located about 480 miles west of the Cabo Verde Islands with 60 mph maximum sustained winds.
The storm was traveling west at 15 mph. ■