Formula 1 teams are facing further disruption to their pre-season preparations after heavy snow hit the Circuit de Catalunya ahead of Day Three.
Cold temperatures, rain and a light snow flurry across the opening two days had already compromised teams’ running with their new 2018 cars, prompting some calls for testing to be extended.
Those calls are set to ramp up after teams and drivers arrived to steadily-falling snow on Wednesday morning.
While the track is generally clear, the run-off areas are covered in snow and circuit edges very slippery.
The inability of the medical helicopter to take off meant the session did not start on time with the track currently under red-flag conditions, preventing cars from running.
While no official announcement has been made, Sky Sports has been told there is unlikely to be any track action before 10am GMT.
Teams, drivers and media have been tweeting the snowy scenes as ‘winter testing’ lived up to its name:
The Sky Sports F1 Digital team will be providing live commentary from dawn until dusk for all days of winter testing while Sky Sports News will also deliver live updates from trackside.