Weathermen today warned of the threat of severe thunderstorms across the Portsmouth area.
They said that the sunny spell was likely to be broken early this evening by stormy weather.
The Met Office issued a yellow warning of heavy rain from 7pm.
A spokesman said: ‘Isolated heavy, and possibly severe, thunderstorms are expected to develop on Friday evening across parts of southern and southwest England.
‘These are likely to become more frequent later and spread northwards across Wales, the Midlands and northern England overnight, and into southern Scotland by the early hours of Saturday. Some torrential downpours are possible leading to localised surface water flooding, with hail, frequent lightning and squally winds also likely hazards.
‘The public should be aware that there is a chance of some very localised significant disruption.’