KUALA LUMPUR, Sept 11 — The Malaysian Meteorological Department (MetMalaysia) has issued a thunderstorm warning covering several states and districts until 1pm today.

The agency said heavy rain and strong winds were expected in Perlis, Kedah (Kubang Pasu, Kota Setar, Pokok Sena, Pendang, Yan, Kuala Muda, Kulim, Bandar Baharu and Langkawi), Penang, Selangor (Kuala Langat, Sepang and Klang), and Johor (Pontian, Johor Bahru and Kulai).

“Warnings are issued when there are signs of thunderstorms with rainfall intensity exceeding 20mm per hour that are imminent or expected to last more than an hour,” MetMalaysia said.

The department added that such alerts are short term and valid for periods not exceeding six hours.