F1's teams and drivers are braced for "very uncertain" weather conditions at the Sao Paulo Grand Prix on Saturday with a risk of heavy rain and winds.

The dry weather of Friday's opening day at Interlagos is forecast to give way to far more unsettled conditions into Saturday, when the 24-lap Sprint followed by Qualifying for Sunday's Grand Prix take place.

The Sprint is scheduled for just before lunchtime local time - which is 2pm in the UK and Ireland, live on Sky Sports F1 and Sky Sports Main Event - with full qualifying in the afternoon (6pm UK time).

McLaren's title-leading driver Lando Norris claimed pole for the Sprint and said: "Of course, we need to prepare for both [dry and wet] conditions.

"I expect the morning to be heavy rain and incredibly windy at the same time, so le

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