THIRUVANANTHAPURAM: The Meteorological Department has forecast heavy rain with thundershowers and strong winds in the state. There is a possibility of the formation of a cyclone in the Andaman Sea. Low pressure will strengthen in the south-eastern Bay of Bengal tomorrow.

Authorities advised those in hilly areas to be vigilant. Lightning is most likely to happen between 2 pm to 10 pm. Fishermen should be cautious as strong winds are likely in the Bay of Bengal and South Andaman Sea.

Meantime, a minor earthquake shook the eastern part of Kollam. The quake was experienced in Pathanapuram, Kottarakkara and Nilamel areas. The quake struck at 11.41 pm last night. There was rain in some parts of the district in the evening.