Follow live coverage of FP3 and the rest of the United States Grand Prix weekend from Austin with F1i.
So far only one practice session has been possible, with Nico Rosberg topping a wet FP1 on Friday morning before torrential rain hit the Circuit of the Americas. As a result, the afternoon session was cancelled completely, with lightning in the area and the lack of a medical helicopter preventing any running.
Despite further heavy rain, the FIA is trying to run FP3 at the scheduled time of 10am local time, although the circuit itself is closed to spectators until midday. Any running that does take place in FP3 could decide the grid if qualifying is unable to be held on Saturday afternoon or Sunday morning.
No teams are allowed to use the intermediate tyre at the start of the final practice session, with the FIA stating only full wet weather tyres will be permitted until further notice.
The heavy rain and high winds - pushed in to Texas as a result of Hurricane Patricia in Mexico - are forecast to continue throughout Saturday and in to Sunday morning. However, the weather is set to improve on Sunday afternoon, which should allow a race to take place.
LIVE: United States Grand Prix FP3
Technical analysis: Exclusive pictures of the 2015 Honda power unit
Click here for the F1 drivers' girlfriends gallery
Keep up to date with all the F1 news via Facebook and Twitter
McLaren have always liked to do things quickly. But selling tomorrow’s car today sounds a…
Daniel Ricciardo may have closed the door on Formula 1, but it’s starting to sound…
Former Haas team principal Guenther Steiner is bracing for fireworks when Formula 1 kicks off…
Max Verstappen has never been shy with his opinions, and his latest take on team…
There are many in Formula 1 - beginning with Aston Martin team owner Lawrence Stroll…
After a 2025 season defined by growing pains and technical pivots, Pierre Gasly is finally…