An amber weather warning for wind came into place for parts of northern England, Scotland and Wales earlier on Saturday, and the Met Office has now said the storm will "continue to deepen" in the coming days.
The amber alert warns flying debris could lead to "injuries or danger to life".
Heavy snow and gale-force winds will also bring disruption, with winds of up to 66mph already being recorded in Capel Curig, north Wales.
Parts of Lancashire, North Yorkshire, Northumberland, north Wales and Scotland are covered by the amber warning, which came into effect at 7pm and is due to remain in place until 3am on Sunday.
The Met Office said that "while some uncertainty remains in the exact track and shape of Storm Dave, a spell of strong southwesterly winds is expected".
Meanwhile, four separate yellow weather warnings from the Met Office came into force on Saturday afternoon:
• An alert for wind covering northern England, parts of Scotland and part of Wales is active until 7am tomorrow
• A separate warning for wind across the whole of Northern Ireland is in place until 3am
• The whole of mainland Scotland and a part of northeast England also faces a yellow warning for wind until 12pm tomorrow
• A yellow alert for snow applies to the Scottish Highlands until 3am
Storm Dave will be at its worst later on Saturday, but will weaken on Sunday as it blows into the North Sea.
Travel disruption on the roads - as well as on rail, air and ferry services - is possible.
Large waves could cause dangerous conditions along the coastline, and there may be 80mph gusts in exposed areas.
Meanwhile, the Energy Networks Association (ENA), which represents electricity network operators, said on Saturday: "The storm has the potential to affect local power infrastructure, increasing the risk of a power cut and fallen power lines.
"Network operators are increasing staffing for operational teams, and moving spare equipment to where the weather is expected to be most disruptive, so it's ready to use if needed."
Met Office meteorologist Greg Dewhurst said that once Storm Dave passes, parts of the UK will have a spell of warm weather.
He predicted "heavy snow" would form across parts of the Highlands through Saturday afternoon, evening and night and "as much as 20-30cm (8-12 inches) could fall over the higher ground, and 5-10cm (2-4 inches) over lower ground".
But warmer air arrives from Europe after Easter Monday, bringing higher temperatures through Tuesday and into Wednesday, he said.
England and Wales could "see temperatures rising to the low 20s, with highs around 20C (68F) or 21C (70F) on Tuesday, and possibly 23C (73F) or 24C (75F) come Wednesday".
Southeast England could enjoy the best of the sun on Wednesday, "where 23C and 24C is most likely".
Scotland's First Minister John Swinney warned of "really quite challenging conditions" later on Saturday and urged people to "follow all of the advice that's available and to make sure they stay safe".
George Fiddes, from Transport Scotland, said motorists "should check their planned routes before setting off".
Some areas could also experience power cuts.
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Earlier this week, the RAC predicted that it could be the busiest Easter on the roads since 2022 - with ABTA estimates indicating two million people were planning to travel abroad.
In Scotland, Network Rail has warned that the East Coast Main Line and services on the Ayrshire coast could be most affected by the extreme weather.
The incident, which came to light on Friday night, happened earlier this week and five people have been temporarily suspended from frontline duties while an investigation takes place.
Jordan Griffiths called the police after his girlfriend, who is eight months pregnant, found a bag of weapons, including a submachine gun, in a road in south London.
Speaking to Sky News, 30-year-old Griffiths said he initially worried he could end up jailed.
"I put [the bag] on the bed, opened the zip and the first thing I pulled out was the Taser," he said. "I was like, 'oh my god'. Pulled out another one and it was a Glock [pistol].
"Opened up the big bit and the MP5 [submachine gun] was there. I was like, 'what am I going to do now? Am I going to go to prison for this?'. I didn't know what to do."
Mr Griffiths called the police and officers soon arrived to retrieve the bag.
"Anyone could have picked it up, to be honest," he said. "Lucky enough, I came outside and rang the police but anyone could have picked it up.
"There's loads of troublemakers around here. [The mayor's] security have let everyone down, really."
The Metropolitan Police's Directorate of Professional Standards has confirmed it is reviewing what happened.
In a statement, it said: "A member of the public called police after finding a bag containing Met-issued firearms and a Taser on a street in south London.
"Within seven minutes of the call to police, officers arrived at the scene and safely recovered the items.
"At this stage, it is believed the bag was misplaced by on-duty officers a short time before the member of the public located it."
The incident happened at about 9.40pm on Tuesday.
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Griffiths previously told The Sun that police were "really shocked" when they arrived.
"I was told [the guns] had been left there by one of Sadiq Khan's security officers, which made sense as he lives here," he added.
A spokesperson for the mayor said: "This is a very serious incident, which has been referred to the Met's Directorate of Professional Standards.
"The Met must now take all steps to ensure an incident like this never occurs again."
Police were called by the ambulance service after a report of a collision between a Volkswagen Touareg and a pedestrian on Rose Tree Avenue in the Cudworth area of the Yorkshire town around 4.55pm on Friday.
The pedestrian, a 45-year-old man, died at the scene, South Yorkshire Police said in a statement.
His family have been informed and are being supported by officers, the force said.
A 60-year-old man and a woman aged 38 were arrested on suspicion of murder on Friday and are still in custody.
A 17-year-old boy and a 33-year-old man were arrested on Saturday on the same charge, the force said. They are also in custody.
Detective Chief Inspector Simon Cartwright appealed to anyone with information about the incident to contact them.
He said the investigation into "this tragic incident is still in its early stages and our thoughts first and foremost are with the victim's family, friends and loved ones".
"Officers will remain in Rose Tree Avenue carrying out further enquiries."
A crime scene remains in place in the area as police carry out enquiries.
The 48-year-old rapper - who has not performed in the UK since he headlined Glastonbury in 2015 - will top the bill for all three nights of Wireless festival in July.
In the time since he last performed on UK soil, West has drawn criticism for antisemitic X posts, a Super Bowl advert directing people to a swastika t-shirt and a song referencing Hitler.
Sir Keir Starmer said in a statement: "It is deeply concerning that Kanye West has been booked to perform at Wireless despite his previous antisemitic remarks and celebration of Nazism.
"Antisemitism in any form is abhorrent and must be confronted clearly and firmly wherever it appears. Everyone has a responsibility to ensure Britain is a place where Jewish people feel safe and secure."
West, also known as Ye, has been barred from X over antisemitism on multiple occasions.
In December 2022, the Power rapper's account was suspended after a post showing a swastika inside a Star of David.
Adidas, which worked with West on his Yeezy trainers, cut ties with him after the incident and donated more than $150m (£117m) to anti-hate groups.
In February last year, West deleted his account after being criticised for posting "hate-filled" remarks about Jewish people, as well as writing "I love Hitler" and "I'm a Nazi".
Weeks later, he drew criticism over a TV advert that directed people to a website selling a swastika t-shirt and released a song titled Heil Hitler.
In January, West took out a full-page advert in the Wall Street Journal to apologise to Jewish and black people, titled: "To Those I've Hurt."
"I am not a Nazi or an antisemite," it said. "I love Jewish people."
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The 48-year-old attributed his previous outbursts to his bipolar-1 disorder, writing: "In early 2025, I fell into a four-month-long manic episode of psychotic, paranoid and impulsive behaviour that destroyed my life.
"I lost touch with reality. Things got worse the longer I ignored the problem. I said and did things I deeply regret."
"I regret and am deeply mortified by my actions in that state, and am committed to accountability, treatment, and meaningful change," he continued. "It does not excuse what I did though."
Wireless Festival was contacted for comment.
The president's plea for the money was included in a proposed budget plan released by the White House to fund the US federal government for the 2027 financial year.
Such spending requests are normally seen as suggestions by Congress.
The Federal Bureau of Prisons would use the investment to cover the first-year costs of rebuilding Alcatraz into "a state-of-the-art secure prison facility", the plan said.
The jail, on an island in San Francisco Bay in northern California, closed in 1963, and was opened to the public in 1973 as part of the US National Park Service.
Last May, Mr Trump said in a social media post that he had told the bureau, along with the US Department of Justice and other agencies to "reopen a substantially enlarged and rebuilt Alcatraz, to house America's most ruthless and violent offenders".
It would "serve as a symbol of law, order, and justice", in a country that had been "plagued by vicious, violent, and repeat criminal offenders, the dregs of society", he wrote.
Alcatraz Federal Penitentiary, which opened in 1934, had been billed as the most secure prison in the US, given the island location, frigid waters and strong currents.
Authorities said escape was impossible, but in the 29 years it was open, 36 men made 14 separate attempts, according to the FBI.
No successful escapes were ever officially recorded, though five prisoners are listed as "missing and presumed drowned".
The story of three of those inmates was turned into the highly successful 1979 film, Escape From Alcatraz, starring Clint Eastwood.
Alcatraz Island was also the setting for the 1996 movie, The Rock, starring Sean Connery and Nicolas Cage.
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Gangsters Al Capone, George 'Machine Gun' Kelly and James 'Whitey' Bulger are among its best-known former inmates.
It has since become a major tourist site, attracting more than a million visitors a year, according to its website.