SEREMBAN: The Malaysian Meteorological Department has issued a widespread thunderstorm warning over the waters of Selangor, Negri Sembilan and West Johor.
In a statement on the website, the thunderstorm was expected to continue until late afternoon on Tuesday.
"This condition may cause strong winds up to 50 kmph and rough seas with waves up to 3.5 meters and dangerous to small boats," it said.
There was also strong winds and rough seas warning with wind of 40 to 50 kmph with waves up to 3.5 meters occurring over the waters off Pahang, East Johor, Kelantan, Terengganu, Sarawak, Sabah (Interior, West Coast and Kudat) and Labuan.
"This is expected to continue until Thursday," it added.
The statement also pointed out that the condition was particularly dangerous to small craft.
"Any recreational sea activities and sea sports should be avoided," it said.
A shipping warning was also issued by the department with strong Northeasterly winds of 50 to 60 kmph and waves up to 4.5 meters occurring over the waters off Condore, Reef North, Layang-Layang, Palawan, Samui, Tioman, Bunguran, Reef South and Labuan.
It added that the situation was expected to continue until Thursday.
"This condition (of strong winds and rough seas) is dangerous to all shipping and coastal activities including fishing and ferry services."