The British MotoGP weekend got off to a dry start during Friday morning practice - and with only one rider within a second of Casey Stoner at the top of the timesheets.
As in Catalunya last weekend, scattered showers are predicted over all three days at Silverstone - with Saturday likely to see the best of the weather.
Conditions were dry (and cold) throughout first MotoGP practice, when Stoner claimed a 0.659sec advantage over fellow factory Honda rider Marco Simoncelli.
Stoner, now just seven points from Jorge Lorenzo after winning three of the first five races, set a best lap time of 2min 3.748sec, which is just a few tenths from the lap record set by Lorenzo on his way to victory in last year's race.
Reigning world champion Lorenzo was third fastest in first practice, but 1.008sec slower than Stoner.
Ducati's Nicky Hayden, who lost out on a podium on the final lap of the 2010 event, was fourth (+1.030sec), with last year's runner-up Andrea Dovizioso fifth (+1.162sec) on the second Repsol RCV.
Home star Cal Crutchlow, riding at a circuit where he won both races - from pole - in WSBK last year, ran as high as second during the session, which he finished in sixth place (+1.259sec).
Monster Yamaha Tech 3 team-mate Colin Edwards, riding less than one week after breaking his collarbone in Catalunya, rode for 13 laps on his way to 16th and last (+5.562sec).
Ben Spies, who took his first MotoGP podium in last year's Silverstone race, and his first podium of 2011 in Catalunya, began the weekend in seventh (+1.382sec), with Aspar's Hector Barbera the second-best satellite bike rider - after Crutchlow - in eighth (+2.410sec).
Suzuki's Alvaro Bautista and injured Pramac rider Randy de Puniet completed the top ten. de Puniet's team-mate Loris Capirossi was the only faller.