Sri Vijaya Puram, Sept. 1: Thunderstorm with gusty wind (40-50 kmph) is very likely to occur at one or two places over A&N Islands on Sept. 2. Thunderstorm with gusty wind (30-40 kmph) is also very likely to occur at one or two places over A&N Islands on Sept. 3 & 4. Squally weather with surface wind speed reaching 35-45 kmph gusting to 55 kmph is very likely to prevail over Andaman Sea & A&N Islands. 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 Sept. 2.