Met Eireann has upgraded its advisory to RED for Cork as Storm Eowyn makes its way towards the country.
That mean's a risk to life, extremely dangerous travelling conditions, unsafe working conditions, widespread power outages, structural damage and wave overtopping.
The red warning comes into effect for the entire county as well as Clare, Limerick and Kerry at 3 am on Friday morning, lasting until 10am.
Cork will be under an Orange alert from 2 am until 5 pm on Friday with gusts of 130 kilometres per hour, and higher, to be expected.
West Cork is likely to be the worst hit part of the county with winds coming in from the Southwest.
Carlow Weather's Alan O'Reilly says it's the most significant storm he's seen in recent years:
"It's a storm that's going to develop and deepen and drop in pressure very rapidly. Moving towards us on Thursday night and into Friday morning."
