THIRUVANANTHAPURAM: The Central Meteorological Department has warned of isolated thundershowers in the state till April 21. Winds with a speed of 40 kilometres per hour are likely. Isolated showers are likely in Thiruvananthapuram, Kollam, Pathanamthitta, Kottayam, Ernakulam, Idukki, Palakkad, Malappuram, Kozhikode, Kannur and Kasaragod districts during the next three hours. The Met office said this in a statement issued at 4 pm.

The State Disaster Management Authority (SDMA) has warned that there is a high risk of thunderstorms between 2 pm and 10 pm and people should be vigilant.

Move into a safe building as soon as you see the first sign of lightning. Disconnect household appliances. Avoid proximity to electrical equipments during thunderstorms. Do not use telephone during thunderstorms. Children should not play in the open air or on the terrace if the weather is cloudy from 2 pm to 10 pm. Do not stand under trees during thunderstorms. Precautions have been issued not to park vehicles under trees.