Ranchi school closure covers October 28-29 as Cyclone Arnab brings heavy rain, strong winds and alerts across Jharkhand. Cyclone Arnab school closure affects Ranchi and East Singhbhum on October 28-29 as IMD warns of heavy rain, lightning and strong winds. The Ranchi and West Singhbhum district administrations have ordered the closure of schools on October 28 and 29 in view of the cyclone.