Saskatoon looked like a shaken snow globe Friday, with strong winds and bright, white snow clouding visibility. It made for rough driving conditions in the city, with 52 collisions between 6:00 a.m. and 4:00 p.m. in Saskatoon Friday. None resulted in serious injuries.Some drivers who may have been fooled by a false spring and have already switched over to summer tires a little early may be in a bit of a pickle.“I would say we are well behind in years past for taking tires off just because our winter has been extending for so long,” said Jae Malinowski, owner of…