Port Blair, July 28: Squally weather with surface wind speed exceeding 45 kmph is very likely along and off Andaman & Nicobar coast during next 24 hours. Sea condition is likely to be rough to very rough. Fishermen have been advised not to venture into deep sea area along and off Andaman &Nicobar coast during next 24 hours. For further enquiries / information 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.