A deep depression over the Bay of Bengal crossed the coast near Kalingapatnam, between Visakhapatnam and Gopalpur, and later weakened into a depression over Odisha and adjoining Chhattisgarh.
The system was near Nuapada, Odisha, and moving north-northwestward.
It was not classified as a cyclonic storm and was expected to weaken into a well-marked low-pressure area.
“Arnab” means ocean in Bengali, and the name was contributed by Bangladesh to the regional cyclone naming system.
Odisha, Andhra Pradesh and parts of West Bengal experienced heavy rainfall, strong winds, rough seas and local flood/landslide risks.