Updated at 3.56pm:\nNari deteriorated to a severe tropical storm as the No 3 signal was hoisted at 2.45pm today. The storm brought record rainfall when it hit northern Taiwan on Monday, causing flooding and landslides that left 79 people dead. It will be closest to Hong Kong tonight and tomorrow morning bringing cloud and rain, with heavy rains later this afternoon. At 2pm, the centre of Storm Nari was estimated to be 180 km east-northeast of Hong Kong and it is forecast to move West at about 22 km per hour, skirting along the eastern coast of Guangdong towards the estuary of Pearl river. The Education Department said kindergartens, schools for physically handicapped children and schools for mentally handicapped children that are in session should implement contingency measures to ensure the safety of students. Such schools should ensure that conditions are safe before allowing students to return home at an appropriate time. Other schools should remain in session and take heed of the Education Department's announcement. All child care centres, elderly services centres and day rehabilitation units including sheltered workshops and day activity centres will remain open. However, if necessary, parents can contact the centres to make arrangements for the safe return home of their children and family members, the Social Welfare Department said. Temporary shelters have been opened. Those in need can call 2835-1473.