Former Met Office building in Bracknell, Berkshire, before relocation to Exeter, since demolished.
Rare thunderstorms and lightning gusts are predicted as part of an arctic trough which will cover Britain over Easter.
The mercury are set to fall over the weekend as blue skies and sunshine in parts of northern Scotland are being replaced by warnings of sleet and snow.
Sky News weather producer, Joanna Robinson, said the Easter weekend will begin largely well but is expected to be “unusually cold” from the north on Sunday.
The Met Office said that the “significant temperature rise” was due to the country having entered an “Arctic trough” and that the colder conditions look set to continue into next week.
But by Monday, the mercury is expected to drop under 10 degrees.
Frequent heavy snow showers will hit Angus, Perth and Kinross, Stirling, Aberdeenshire, Moray, the Highlands and Argyll and Bute on Sunday night and Wednesday evening, with potential for some travel disruption.
On Friday sunny skies are expected in much of the country and
The rest of the country should stay dry but will be colder.