The yellow weather warnings are expected to come to an end at 3pm on Saturday 9 February.
The storm, which is set to hit the United Kingdom on Friday and Saturday, will see high winds across most of the United Kingdom, particularly in the west.
It will be valid from 5am and remain in place until 1pm in the afternoon.
Met Éireann on Thursday issued four separate weather warnings for Ireland, two Status Orange and two Status Yellow ahead of Storm Erik.
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While there is expected to be a lull in the fiercest winds on Friday evening, gusts will pick up again around midnight, when a warning for wind will cover Northern Ireland, southern Scotland and much of Northern England.
South-west to west winds will reach average speeds of 65kmh to 80kmh, with some severe or damaging gusts of 110kmh to 130kmh.
The warning of high winds gusting at up to gale force will last for the whole of Cornwall and all but the very North East of Devon - over Exmoor - until 8pm today.
Saturday will see the "strongest winds" lashing Northern England too, while coastal areas could be hit by winds as strong as 70mph.
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The Status Yellow - Wind warning for the rest of Ireland forecasts that Storm Erik will bring southwest to west winds that will reach mean speeds of 50 to 65 km/h with gusts of 80 to 110 km/h.
They also advised those near coastal areas to use caution when driving through large areas of water.
It has asked motorists to check traffic conditions and to expect the unexpected, and advises pedestrians and cyclists to wear bright clothing and take care on roads.
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