Thunderstorms could dampen Jubilee parties today with worse to come tomorrow as the Met Office issues a yellow weather warnings for parts of the UK.
Concerns have been raised for the Big Jubilee Lunch and street parties across the UK which are due to be held on Sunday, to mark the culmination of the Queen's four-day celebrations.
Many communities have applied to their local councils to close roads as neighbours gather to mark the day.
The bad weather is expected to affect parts of southwest England during the rest of this morning and early afternoon today and vast swathes of the country on Sunday.
The Met Office says a few places could see as much as 10-20 mm of rain within just one hour this morning and into the early afternoon with Cornwall, Devon, Plymouth and Torbay the main areas affected.
Torrential downpours are likely in a few places with parts of the Midlands, East Anglia and southeast England most at risk on Sunday.
Thunderstorms and areas of rain are expected to develop over parts of England and Wales during the early hours of Sunday.
Some places could see 15-20 mm in an hour, and perhaps up to 50 mm before storms fade, and hail is expected to affect a few spots.
According to the Met's forecasters these thunderstorms will slowly spread into southern parts of northern England on Sunday morning before easing.
Further south, drier conditions briefly develop on Sunday morning before further showers and thunderstorms develop over some parts of southern England, Wales, the Midlands and East Anglia later.
These may give some heavy downpours with a further 10-20 mm possible in some places, the weather experts predict.
Met Office meteorologist Steven Keates told the Mirror: "There's a sort of north/south split in our weather over the weekend with southern areas bearing the brunt of a couple of rounds of heavy rain showers and thunderstorms and areas further north seeing fine, dry and some warm and sunny weather as well.
"So quite big contrasts across the UK but for some of us the weather could cause a few problems over the next couple of days and, at the very least, be inconvenient given there's lots of outdoor plans and festivities I expect on many people's minds."
