Provincial police say there have been no major injuries reported at a major crash on the 400, south of Barrie.
High winds have reduced visibility, creating a pileup that involves as many as 70 vehicles.
Barrie Fire have urged people to stay off the roads.
That's not the only area where the roads have been reported to be nearly impassable.
As a matter of fact, ALL roads in Dufferin, Wellington and Simcoe Counties have been closed until further notice.