Strong winds are causing "severe driving conditions in parts of Glacier County and Teton County.
The Blackfeet Tribal Business Council said at 1:20 p.m. on Thursday: "All north and south bound traffic suspended on 89 south until further notice. Emergency traffic ONLY!!
Strong winds cause truck trouble in Glacier County
The Montana Department of Transportation said: "DANGEROUS CROSSWINDS. NO SEMI TRAFFIC ON US 89 FROM BROWNING TO PENDROY. TRAFFIC IS ADVISED TO SEEK ALTERNATE ROUTE."
Road Conditions from MDT: click here
Live webcams from across MT: click here
We have received several reports of semi trucks being blown over the the wind.
There are no reports of any serious injuries.