Visakhapatnam, Oct. 27 -- Cyclonic storm 'Arnab' moved west-northwestwards over the west-central Bay of Bengal on Tuesday, according to the India Meteorological Department (IMD), bringing heavy rain and disruption to parts of Andhra Pradesh.

Authorities have also stepped up precautionary measures ahead of its expected landfall on Wednesday.

According to the India Meteorological Department (IMD), the cyclone moved at a speed of around 20 kmph during the six hours preceding its 11.30 am bulletin. It was centred over the west-central Bay of Bengal near latitude 16.2degN and longitude 83.7degE.

The storm was located about 170 km south-southeast of Visakhapatnam, 180 km east-southeast of Kakinada, 270 km east of Machilipatnam, 350 km east o...