Pune, May 10 -- The Southwest Monsoon is very likely to advance into the south Andaman Sea, some parts of southeast Bay of Bengal and the Nicobar Islands around May 13, India Meteorological Department (IMD) said on Saturday. Day Temperatures were markedly above normal (5.1 degree Celsius or more) at isolated segments over Arunachal Pradesh, Assam, and Meghalaya. They were appreciably above normal (3.1 to 5.0 degree C) at a few chunks over Sub-Himalayan West Bengal and Sikkim, at isolated areas over Bihar, Nagaland, Manipur, Mizoram and Tripura, IMD bulletin said. The temperatures were above norm (1.6 to 3.0 degree C) at many corners over Gangetic West Bengal; at isolated locations over Odisha, Tamil Nadu, Puducherry, Karaikal, Kerala and M...