The Met Office has issued a yellow warning for strong winds in parts of Hampshire on Saturday.
Storm Antoni, the first named storm to hit the UK since April, will sweep across the South West on Saturday morning – with the Met Office warning area stretching as far east as southern Hampshire.
It is expected to bring with it "unseasonably windy weather" accompanied by showers or longer spells of rain.
The Met Office warns that travel hold-ups, power cuts and some damage to buildings are possible – as well as a "chance of injuries from flying debris".
Gusts of 35-40mph are estimated as well as risks of up to 50-65mph in coastal areas.
A Met Office spokesman said: "An area of low pressure, Storm Antoni, will bring unseasonably windy conditions to south and southwestern areas of England and Wales during Saturday.
"Strong winds are likely to affect Irish Sea coastal areas from early morning, pushing gradually south and east and spreading inland.
"By the afternoon English Channel coasts will also see some very windy conditions.
"The strongest winds, however, will affect parts of southwest Wales and southwest England, where gusts could reach 50-55 mph inland for a time and perhaps 60-65 mph along exposed coastal areas and over high ground.
"Later in the afternoon and through the early evening, wind strengths will begin to slowly ease from the west."