Sri Vijaya Puram, Feb. 23: Thunderstorm with lightning is likely to occur at one or two places over A&N Islands on Feb. 24. Heavy rain (07-11 cm) also accompanied with thunderstorm and lightning is likely to occur at one or two places over A&N Islands on Feb. 25 & 26. Squally weather with surface wind speed reaching 35-45 kmph gusting to 55 kmph is very likely over Andaman Sea & A&N Islands from Feb. 24 to 27. Sea condition is also likely to be rough. Fishermen have been advised not to venture into the sea along and off Andaman Sea & A&N Islands till Feb. 27.