A low pressure area is likely to develop over the Bay of Bengal during the next 24 hours under the cyclonic circulations, the weathermen have said.
A cyclonic circulation over the west-central Bay of Bengal off south A.P. coast persists now and extends up to1.5 km above the mean sea level. Another cyclonic circulation lies over the east-central Bay of Bengal between 2.1 km and 5.8 km above the mean sea level.
The weather system is likely to become more marked during the subsequent 24 hours. Thunderstorm, along with lightning and heavy rainfall, is likely at isolated places in coastal A.P., Rayalaseema and Yanam from October 18 to 22, according to the India Meteorological Department.