Severe weather warnings are in place for the south east in the coming few days, with the remnants of Hurricane Bertha threatening to bring more storms to Hampshire.
While "heavy, slow-moving and possibly thundery showers" are being forecast for parts of Friday, the Met Office said it was Sunday (August 10) that brought the real "potential for severe weather".
Hurricane Bertha, which has now weakened into an Atlantic storm, has a 60% chance of hitting the south of England.
Heavy rain is expected all day on Sunday, with a yellow weather warning issued for Hampshire and the rest of southern England.
The Met Office said on Friday that "southern parts of the UK look as though they are most at risk during Sunday", even going so far as to add: "Given the unseasonable nature of the weather, it could be sufficient to disrupt transport and make outdoor activities dangerous."
Chief forecaster Paul Gundersen said: "There is still some uncertainty surrounding this weekend's weather, with the potential for heavy rainfall, strong coastal winds and large waves on Sunday.
"However, there is still a chance that the system may pass to the south of the country, giving the UK a brighter day.
"Rain and strong winds may well bring disruption, especially across southern parts of the UK with the potential for more than 50mm of rain and coastal gusts of over 60mph.”
The storm is moving away from the western side of the Atlantic, after hitting the Caribbean islands with gusts of more than 90mph (145kph), leaving thousands of homes without power.
The Met Office has also warned there could be more than 50mm of rainfall.