Grand Prix weather

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  • Red Bull Racing's Mark Webber kicks up spray as showers hit Silverstone during practice for the British Grand Prix. Photo: Rui Vieira/PA Wire.

    Paul di Resta of Force India follows suit. Photo: David Davies/PA Wire/Press Association Images

    Ferrari's Felipe Massa puts in a lap as the track dries for a while. Photo: David Davies/PA Wire/Press Association Images

  • Grand Prix weather
    08.07.2011 14:52

     

    Friday practice at Silverstone for the British Grand Prix was marred by some heavy showers, although the only driver to crash was Sauber's Kamui Kobayashi.

    It did mean, however, that teams were left uncertain as to the effects of the new ruling that bans off-throttle blowing of diffusers, whereby exhaust gas blows over the rear floor of the car to aid downforce.

    Qualifying on Saturday perhaps has a chance of being dry but there will still be showers around, quickly developing over Northamptonshire during the morning and remaining scattered across the county during the afternoon.

    The problem with forecasting showers rather than the widespread rain associated with fronts is that it is impossible to pinpoint individual showers one or two days ahead, and often hours or even minutes ahead.

    It's like spilling a packet of frozen peas, for example. You know your floor will be covered with peas but can't anticipate the exact position of each pea. To track the showers during the next couple of days, however, you can look at the radar at RainToday. For the peas, perhaps a dustpan and brush would be best.

    Silverstone may be blessed by the sunnier breaks in between while showers skirt the circuit but a sharp downpour or two is eminently possible, with a small risk of a thunderstorm.

    For the race on Sunday there will be cloud building up again after quite a sunny morning. At the moment there looks to be a reasonable chance of staying dry but again we cannot rule out the possibility of a passing shower during the afternoon as those clouds grow.

    Maximum temperatures on both days will be in the low 20s Celsius - not too hot but warm enough whenever the sun comes out, especially considering that the wind will be quite light on Sunday from the west or northwest after a moderate south-westerly on Saturday.

     

    By: Stephen Davenport