Tropical Storm Matmo has weakened into a low-pressure area in upper Vietnam and will bring heavy rains to the North, the Northeast and the East of Thailand on Tuesday, according to the Meteorological Department.
Sugunyanee Yavinchan, director-general of the department, said on Tuesday morning that Tropical Storm Matmo became an active low-pressure cell in the upper part of Vietnam at 1am on Tuesday.
The low-pressure system has strengthened the southwestern monsoon over the Andaman Sea, Thailand and the Gulf of Thailand and will cause isolated heavy rains in the North, the Northeast and the East of Thailand, she said.
Ms Sugunyanee warned people in the regions of possible flash floods, run-off and overflowing waterways.
She said the warning was the 15th and final one concerning Storm Matmo.