Extreme gusts reached up to around 100mph on the Welsh coast and were so ferocious they caused a blizzard of sea foam to fall on land.
The family of Stephen Brookes have warned others about the drinking game 'Neknominate'.
The Welsh Ambulance Service has accepted there were A&E delays at a hospital last night as eyewitnesses reported 14 queuing ambulances.
A man from Caernarfon has died in hospital after being struck by a tree during storms.
The Welsh Ambulance Service was called to the incident in Caethro on Wednesday afternoon.
– Welsh Ambulance Service statement
We were called at 4.57pm on Wednesday, February 12 to reports a man had been struck by a tree in Caethro, Caernarfon. We sent an emergency ambulance to the scene, and a man in his 70s with serious injuries was taken to Ysbyty Gwynedd in Bangor.
The man was later transferred to a hospital in Stoke, where he has since died.
Watch ITV News reporter Damon Green describe the incredible winds and severe conditions battering the Blackpool seafront.
Martha Fairlie reports from Colwyn Bay in Wales where drivers have had to pull over and are being cared for by the Red Cross because of the extreme weather.
Read more: Latest on the storm and floods
Just over 100,000 are now without power spread across south west, Wales and East Midlands where on land wind speeds have now exceeded 100 mph.
Airborne debris and uprooted trees are causing the damage.
A Western Power Distribution spokeswoman has told ITV News that 42,000 homes and businesses are without power in South Wales.
People are being warned about the dangers of taking part in the drinking game Neknominate amid fears that it may have resulted in at least three deaths in Wales and Ireland.
Police in Wales investigating the "sudden" death of a 29-year-old man in Cardiff early on Sunday say they "have received information regarding the so-called neck and nominate game".
Last week, Jonny Byrne and Ross Cummings both lost their lives in Ireland after apparently trying to complete their challenges.
It is believed Mr Byrne, 19, drowned after jumping into the River Barrow in Carlow after playing the game.
His death came one day after the body of DJ Ross Cummins, 22, was found in a house in Dublin.
The anti-binge drinking campaign group Alcohol Concern has responded to news of another death potentially linked to "Neknomination".
It is devastating for family and friends to lose someone in this way.
This lethal 'game' shows just how hard we have to work to de-normalise binge-drinking among young people.
But it's not just about young people. They take their cues from society's attitude to drinking and it's this we have to change for all our sakes.
Police investigating the death of a 29-year-old man from Cardiff are looking into whether the controversial drinking game "Neknomination" played a part in his death.
Officers and paramedics were called to an address after receiving reports that a man had collapsed after taking part in the game.
The social media drinking craze involves a drinking dare, usually normally 'necking' a pint of alcohol, posting the video online and then nominating one or two people to do the same.
A South Wales Police spokesman said: "We are investigating the sudden death of a 29-year-old man from Rumney during the early hours of February 9.
"Officers investigating his death on behalf of HM Coroner have received information regarding the so-called neck and nominate game. Inquiries are continuing and a post-mortem is taking place."
Warnings for high winds and severe rain have been issued tonight for the south west, the south of England and most of Wales.
The Met Office has warned those in the areas highlighted to be prepared for disruption caused by the extreme weather tonight and into the weekend.
For more information see the Met Office website.