Port Blair, May 10: Thunderstorm with lightning along with gusty wind (speed reaching 30-40 kmph) likely to occur at one or two places over Andaman & Nicobar Islands on May 11 & 12. For further enquiries/information, one may contact helpline of State Emergency Operation Centre at Helpline No. 1070 & District Emergency Operation Centre at Helpline No. 1077. For any emergency/assistance at sea, call Coast Guard SAR Agency at Toll Free number 1554.