A low pressure area moved from Burma to the Bay of Bengal on September 8, where it developed into a depression. The depression strengthened as it moved to the northwest and became a deep depression on the next day, when it was southeast of Calcutta. The system crossed the West Bengal coast later and moved to the northwest across the Chota Nagpur Plateau. The depression stalled over Uttar Pradesh on September 12, and remained near Lucknow until September 14. The depression then turned to the east and weakened into a remnant low over northern Bihar, on September 18.