Dangerous weather conditions are hampering efforts by lines' crews to get power back on for some of the nearly 4000 Northland houses affected by Thursday night's storm.
Whangārei and Kaipara lines' company Northpower is appealing to customers to keep their trees well clear of powerlines to avoid unnecessary outages and inconvenience to others.
That's because trees were again the major cause of electricity outages on Thursday night in Kaipara and Whangārei where 1790 households were without power for various lengths of time when howling winds and rain wreaked havoc in the region.
More bad weather was forecast for last night.
The west coast in particular was badly affected on Thursday and Top Energy said further outages were likely with more rain forecast over the weekend.