The National Weather Service in Great Falls has issued a Winter
Storm Warning for elevations above 6500 feet for heavy snow...
which is in effect from 6 PM this evening to noon MDT Thursday.

A Winter Weather Advisory for elevations below 6500 feet has also
been issued. This Winter Weather Advisory for elevations below
6500 feet for snow... is in effect from 6 PM this evening to noon
MDT Thursday.

* Timing and main impact: rain and isolated thunderstorms will
develop by late afternoon along the Rocky Mountain front and
over southwest Montana. The rain will change to snow during the
evening. Snow may be heavy at times in the mountains. By early
Thursday morning the band of snow will begin to move east and
snow should decrease.

* Snow accumulations: 2 to 4 inches of wet snow is possible at
lower elevations with 6 to 12 inches possible at elevations
above 6500 feet.

* Winds and visibility: west winds will become 20 to 30 mph
Thursday afternoon with gusts to 40 mph. This will cause areas
of blowing snow and reduced visibilities.

Locations affected include: Choteau... White Sulphur Springs...
Battle Ridge Pass... Bozeman... Bozeman Pass... Targhee Pass...
West Yellowstone... Boulder... Boulder Hill... Elk Park Pass...
Homestake pass... Whitehall... Browning... Marias Pass...
Townsend... Great Falls... Kings Hill Pass... Big Hole Pass...
Chief Joseph Pass... Dillon... Monida Pass... Flesher Pass...
Helena... Lincoln... MacDonald Pass... Rogers Pass... Ennis...
Norris Hill... Raynolds Pass... Twin Bridges.