World Superbike rider Jonathan Rea has described practice conditions at Misano as frustrating as he makes his MotoGP debut.

The Northern Irishman is standing in for injured world champion Casey Stoner.

Rea told motogp.com: "It was a frustrating day with these weather conditions.

"It was a pretty pointless exercise and I didn't have any real feedback to give to the engineers. It's a strange situation when the temperature is so low that none of the top riders even go out on track."

Qualifying for tomorrow's race takes place this afternoon at the Marco Simoncelli Circuit, with dry conditions forecast.