Along with a spell of heavy rain and high tides there's also a risk of coastal flooding and damage.
The most severe winds of 76 miles per hour were recorded on the Isles of Scilly, off the southwest coast of Cornwall, while winds of up to 60 miles per hour were recorded in Milford Haven, Pembrokeshire, and in Camborne, Cornwall. Some flights were cancelled at Cardiff and Exeter Airports on Friday morning.
The airport's spokesman said the wind has died down this afternoon, but advice to passengers is to continue to check the status of their flight with their airline.
Clare's Chief Fire Officer, Adrian Kelly says the adverse weather is likely to impact driving conditions tomorrow morning. National Rail has recommended passengers in western parts of the United Kingdom check before they travel.
Train services between Swansea and Carmarthen are being suspended during parts of Friday because of Storm Callum.
Hundreds of homes and businesses experienced power loss over night in Northern Ireland last night, while in the Irish Republic multiple faults were reported by network operator ESB.More news: US stocks plunge toward their worst loss in six months
Around 950 homes in south West England and almost 100 in south Wales have also lost electricity.
The Met Office is advising people to take caution as the weather could cause power cuts, travel disruptions and flooding.
An Orange weather warning for Galway has been extended by Met Eireann until 5pm on Friday.
"Control of a vehicle may be affected by strong cross winds. Some roads and bridges may close".
Shropshire is on the edge of another yellow warning for rain, affecting the whole of Wales throughout Friday. "That's quite a substantial amount of rain to come and could bring flooding".
A Met Office yellow warning for high winds and heavy rain remains in place until midnight.
Whitchurch in Pembrokeshire saw 15mm of rain fall in a matter of hours on Friday morning as Michael moved in.