Driving conditions are not great, and this storm is sticking around till noon, dumping lots of snow.  Complete warning and advisory below.

... Winter Storm Warning remains in effect until noon MDT today
for elevations above 6000 feet...
... Winter Weather Advisory remains in effect until noon MDT today
for elevations below 6000 feet...

A Winter Storm Warning for elevations above 6000 feet remains in
effect until noon MDT today. A Winter Weather Advisory for
elevations below 6000 feet remains in effect until noon MDT
today.

* Timing and main impact: snow... heavy at times... will continue to
affect the mountains. Snow will diminish this afternoon.

* Snow accumulations: total snow accumulations of 10 to 20
inches in the mountains and 3 to 6 inches in the lower
valleys are expected.

* Winds and visibility: visibilities less than one half mile can
be expected in the mountains and at times in the lower valleys.
Gusty northwest winds 20 to 30 mph Monday will further
contribute to the poor visibilities and will cause areas of
blowing and drifting snow in the mountains.

* Other impacts: expect roadways to be snow covered and
slippery.

* Locations affected include: Battle Ridge Pass... Bozeman...
Bozeman Pass... Targhee Pass... West Yellowstone... Boulder...
Boulder Hill... Elk Park Pass... Homestake pass... Whitehall...
Townsend... Flesher Pass... Helena... Lincoln... MacDonald
Pass... Rogers Pass... Ennis... Norris Hill... Raynolds Pass...
Twin Bridges

Precautionary/preparedness actions...

A Winter Storm Warning means significant amounts of snow... are
expected or occurring. Strong winds are also possible. This will
make travel very hazardous or impossible.

For specific Road and travel conditions in Montana... dial 5 1 1.