KUALA LUMPUR, May 24 — The Malaysian Meteorological Department (MetMalaysia) today issued a thunderstorm warning for several states across peninsular Malaysia, Sabah and Sarawak until 7pm.MetMalaysia said the warning involves areas in Perak, Kelantan, Terengganu, Pahang, Selangor, Negeri Sembilan and Johor.In Perak, the affected areas are Hulu Perak, Kuala Kangsar, Kinta, Kampar, Batang Padang and Muallim.The warning in Kelantan covers Tumpat, P…