India, Sept. 27 -- Two back-to-back weather systems over the Bay of Bengal are likely to trigger heavy rain in some districts of West Bengal during the Durga Puja days, the India Meteorological Department (IMD) warned on Saturday.

While one low pressure area formed over the Bay of Bengal on Thursday and has already intensified into a depression, a second low pressure system is expected to form over the sea around October 1, officials said.

This comes on the heels of a low-pressure system, which formed over the Bay of Bengal on September 22 and triggered the heaviest rain in Kolkata in nearly four decades resulting in a near-cloudburst situation.

"The depression, over the Bay of Bengal, has moved closer to the Odisha coast. Over the nex...