Weathermen have flashed a midsummer floods warning for the Portsmouth area.
Met Office forecasters predict thunderstorms will hit the region today.
They have issued a yellow alert in Hampshire for today, tomorrow and Friday.
A spokesman said: ‘Although many areas will probably miss them, scattered but potentially intense thundery downpours seem likely to affect parts of the warning area from late Wednesday and through Thursday.
‘Please be aware of possible localised “medium” impacts from either flooding or frequent lightning.’