All the action was crammed into the opening few minutes, as the rain that had loomed all weekend finally arrived in earnest for the Moto2 session, which began slightly late due to the knock-on delays from the red flag in MotoGP's pre-qualifying practice.
An initial shower eased, suggesting there might be more dry time after all, but the clouds opened properly soon afterwards and the field headed to the pits to wait out the remaining half-hour.
Nakagami was on top with a 1m38.508s for Italtrans when the rain came and was duly able to secure pole by 0.350 seconds over Marc VDS' Scott Redding.
Johann Zarco completed the front row on his home ground, and had the track to himself for quite a while in the wet when he came out to entertain the local crowd.
Jerez winner and championship leader Tito Rabat headed Xavier Simeon and Nico Terol on row three.
Pre-season title favourite Pol Espargaro was left in seventh, followed by Tom Luthi, Mattia Pasini and Mika Kallio.
- Sports & Recreation