Sri Vijaya Puram, June 15: Thunderstorm and lightning with gusty wind (40-50 kmph) is very likely to occur at one or two places over A&N Islands on June 16, 17, 18, 19, 20 & 21. Due to squally wind with speed reaching 40 – 50 kmph occasionally gusting 60 kmph is likely to prevail along and off A&N Coast. Fishermen have been advised not to venture in to the sea along and off A&N Coast till June 17.