Port Blair, May 9: Thunderstorm with lighting along with gusty wind 30-40 kmph is likely to occur at one or two places 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.