Sri Vijaya Puram, Feb. 14: Thunderstorm with gusty wind (30-40 kmph) and lightning is likely to occur at one or two places over Nicobar Islands on Feb. 16 & 17. Thunderstorm with gusty wind (30-40 kmph) and lightning is also likely to occur at one or two places over Andaman & Nicobar Islands on Feb. 18.