A Winter Storm Warning has been issued for the Bozeman area from 2pm Sunday until 5am on Tuesday. The National Weather Service is predicting a big storm that could drop between 6 and 9 inches of snow in the Gallatin Valley. 10 to 18 inches are predicted for the higher elevations. Look for the snow to start falling sometime tonight.

Here is what the National Weather Service issued this morning:

... Winter Storm Warning in effect from
2 PM this afternoon to 5 am MST Tuesday... 

The National Weather Service in Great Falls has issued a Winter
Storm Warning for heavy snow... which is in effect from 2 PM this
afternoon to 5 am MST Tuesday. The Winter Storm Watch is no longer
in effect.

* Locations... Big Hole Pass... Chief Joseph Pass... Dillon... 
  Monida Pass... Ennis... Norris Hill... Raynolds Pass... Twin 
  Bridges...  Battle Ridge Pass... Bozeman... Bozeman Pass... 
  Targhee Pass... West Yellowstone.

* Snow accumulations... 6 to 9 inches at lower elevations and 10 to
  18 inches in the mountains.

* Timing... periods of light snow are expected over the mountains
  along with locations around Big Sky and West Yellowstone today.
  The snow will become more widespread late this afternoon and
  evening and then continue through Monday night.

* Impacts... periods of moderate to heavy snowfall will cause
  reduced visibility and hazardous travel with snow covered and
  icy roads. Some of the heaviest snowfall is expected during both
  the morning and afternoon commutes on Monday.