Several areas across six states and the Federal Territory of Putrajaya are expected to experience thunderstorms and heavy rain until 2pm today, according to the Malaysian Meteorological Department (MetMalaysia).
In a statement issued at noon, MetMalaysia said the warning covers Kuantan and Rompin in Pahang, as well as Sepang, Kuala Langat, Klang, Petaling and Kuala Selangor in Selangor.
Putrajaya is also affected, along with Kota Tinggi and Mersing in Johor.
In Sarawak, the areas under the warning are Mukah, Dalat and Matu in Mukah; Tatau and Bintulu in Bintulu; Sibu; Song in Kapit; Lubok Antu in Sri Aman; and Betong.
MetMalaysia said thunderstorm warnings are issued when there are indications of thunderstorms accompanied by rainfall exceeding 20mm per hour, either occurring or expected to occur for more than an hour.
The department added that each thunderstorm warning is a short-term alert, with a validity period of no more than six hours.

