Lightning tempests and power cuts could be set off by the troublesome climate.
The news couldn’t come at a more terrible time as Sunday denotes the last day of Jubilee festivities.
Anybody going out on the streets has been cautioned to be keeping watch for splash and flooding which could make driving risky.
The circumstances could see street terminations as well as abrogations on open vehicle.
“The reality the bank occasion concur with the finish of half-term in many spots can possibly come down out and about network, so arranging an excursion cautiously is essential to beat the most horrendously terrible of any lines,” Rod Dennis, the RAC traffic representative said.
A Met Office representative encouraged individuals to really look at their nearby figure for explicit insights concerning their region.
It recommended individuals have contingency plans for any proposed parties on the off chance that occasions must be canceled because of the climate.
Andy Page, the Met Office boss meteorologist said: “Many spots inside the advance notice region are probably not going to see a tempest by any means, however those places that truly do see one could well see influences from weighty downpour and continuous lightning strikes.
“A couple of spots could see up to 20 – 30mm of downpour in the span of 60 minutes, with a little opportunity of 50mm in a few hours, no doubt close to the south coast. The gamble of rainstorms facilitates as we go through Saturday morning.
“Notwithstanding, as this band of warm air keeps on driving further north across the UK there is a gamble of additional tempests and weighty storms on Sunday.
“We will screen this gamble and may have to give one more admonition when the potential for influences becomes more clear. If it’s not too much trouble, watch out for the gauge for your area consistently for any updates.”