TRUCKEE (KRON) — Interstate 80 is closed to trucks in both directions in the Sierra Thursday afternoon due to snowy weather conditions, according to the CHP.

Caltrans is turning traffic around in Colfax because of spin outs.

The National Weather Service is anticipating 12 to 18 inches of snow this afternoon along I-80 and Highway 50 with even more over night.

The weather agency says travel to Tahoe will be “nearly impossible” through Thursday night.

SR-89 is also closed at Emerald Bay because of winter weather conditions.

Chain controls are in place along several other Sierra roadways.

Video shared by Caltrans shows heavy snow falling along I-80 near Emigrant Gap at Laing Road.