Non residential properties such as businesses or industry saw the highest drain on the grid locally last year.

Customers are advised real-time updates are available on www.PowerCheck.ie.

ESB Networks are advising customers to regularly check the Power check website for the latest estimated restoration times for each area.

Carrigallen in county Leitrim is one of the worst hit areas in the region with over 2,000 customers without power.

People are urged to drive with care, with warnings that trees or power lines already weakened by Storm Isha could be blown down by Jocelyn.

Boyle, Ballaghaderreen and Arigna are some of the worst-affected areas where thousands of customers are still waiting for power to return.

ESB Networks is warning it could be a number of days before power is fully restored to all households.

A tornado watch has also been issued for Ireland, with potential for funnel clouds to develop during thunderstorms.