The typhoon Phanhone is casting a dark shadow over the Japanese Grand Prix, with stormy conditions expected to hit the mainland on Sunday.
Conditions for qualifying are expected to be dry, bar a few showers, but there are fears the race itself could be affected, depending on the time heavy rain and strong winds are expected to descend.
Lewis Hamilton, now topping the driver's championship by three points with a handful of races to go, has continued his hot streak by setting the fastest time in second practice at Suzuka.
He beat Mercedes team mate and close rival Nico Rosberg by a mere 0.24 seconds, with the pair well ahead of the rest.
McLaren's Jenson Button and Sebastian Vettel finished fourth and fifth, behind Valtteri Bottas of Williams.
Qualifying for the Japanese Grand Prix will start at 5am on BBC One and Sky Sports F1 from 5am
