The main impacts for the United Kingdom will be from heavy rain across some western areas on Friday and Saturday.
A 21-year-old man was killed after a landslip in Carmarthenshire and many homes and businesses were flooded.
According to the forecasters: "Gusts 50 to 60 miles per hour are likely in some places, with potential for gusts of 70 to 80 miles per hour around exposed coasts and hills, with large waves an additional hazard".
A yellow warning for wind is in place across the west coast of Scotland, including Glasgow and parts of the central belt, throughout Friday.
Sky's weather forecaster Kirsty McCabe said: "During Saturday, pulses of rain will slowly edge northwards into much of Scotland, while also affecting parts of Ireland and Northern Ireland".
Winds are expected to strengthen during this afternoon, before beginning to ease slightly later this evening.
"In addition, leaves and twigs, brought down by the wind, could block drains and culverts, increasing the likelihood of flooding".
In Mayo, the Turlough to Castlebar road is closed due to a fallen power line but all other major routes in the county are clear.
It has also advised pedestrians and cyclists to wear bright clothing and take care during the windy conditions.
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"Roads are slippery and there is a fair amount of standing water".
Pembrokeshire County Council is working with multi-agency partners to monitor the situation.
Big splash: A jogger is caught by the spray on Salthill promenade, Co Galway, during Storm Callum yesterday.
It is because the storm is likely to coincide with high tides around the south Wales coast.
The majority of FlyBe flights to and from Belfast City Airport were also canceled between 06.00 a.m. and 09.30 a.m. Friday, causing further knock-on delays throughout the day.
Large parts of South and West Wales were under water and police to stay off the road unless their journeys were absolutely necessary.
"Our teams are doing all they can to reduce the risk for communities, but if there is flooding we want to make sure people are doing all they can to keep themselves safe".