ESB crews are working to restore power to homes in west Donegal.
There has been a lull in the storm – but it is expected to pick up later.
Power is expected to be restored to 91 customers on Arranmore Island by this afternoon.
Electricity has also been cut to more than 120 homes in the Dungloe area, 160 homes in Loughanure and two dozen customers in Kincasslagh.
Power has been restored to homes in Letterkenny and other areas.