At this stage, the highest rainfall accumulation are expected in Northland, where an orange heavy rain warning is in force. Up to 100mm to 140mm is expected in Northland from 11am Sunday to 9am Monday, mainly in the north and east of the region. Northlanders are warned the heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips are also possible, and driving conditions may be hazardous. CHRIS MCKEEN/STUFFA person runs for shelter as rain falls in Auckland on Saturday – MetService is now warning of heavy rain set to fall in parts of central and northern New Zealand. …