Yellowstone National Park Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Special Statement
Issued: 2:05 PM MST Dec. 9, 2018 – National Weather Service

Dry through the day Monday with warming mountain temperatures and
steepening valley inversions. A new rather weak storm system will
bring a period of light snow the area later Monday night through
Tuesday. Amounts will be light from this system with 1 to 3 inches
in the mountains for most spots with a dusting to an inch in the far
west valleys. A stronger system will arrive late Tuesday night
through Wednesday with early indications pointing to 6 to 9 inches
in the mountains with increasing west to northwest winds of 25 to 40
mph over the ridges and exposed locations. A few favored northwest
flow areas like The Tetons could see around a foot as snow continues
through Wednesday afternoon.



205 PM MST sun Dec 9 2018

Dry through the day Monday with warming mountain temperatures and
steepening valley inversions. A new rather weak storm system will
bring a period of light snow the area later Monday night through
Tuesday. Amounts will be light from this system with 1 to 3 inches
in the mountains for most spots with a dusting to an inch in the far
west valleys. A stronger system will arrive late Tuesday night
through Wednesday with early indications pointing to 6 to 9 inches
in the mountains with increasing west to northwest winds of 25 to 40
mph over the ridges and exposed locations. A few favored northwest
flow areas like The Tetons could see around a foot as snow continues
through Wednesday afternoon.



202 PM MST sun Dec 9 2018

... Two weather systems to impact the west through mid-week...

The first of two weather systems will bring some light snow to the
far west Monday night into Tuesday. Only light accumulations of 1
to 3 inches are expected in the mountains with a dusting to around
an inch in the lower elevations.

A more potent storm system is expected to arrive later Tuesday
night and Wednesday with significant snowfall possible. Early
indications point to 6 to 9 inches in the mountains with up to a
foot in The Tetons. The far west valleys and lower elevations will
likely see 3 to 5 inches with locally higher amounts. This storm
system will be accompanied by strong west winds of 25 to 45 mph
in the mountains with 15 to 30 mph across the lower elevations
causing areas of blowing snow. Roads will likely become slick and
snow covered, especially with this second system.

Stay tuned for future statements and possible winter highlights in
the next day or two from this second system.



202 PM MST sun Dec 9 2018

... Two weather systems to impact the west through mid-week...

The first of two weather systems will bring some light snow to the
far west Monday night into Tuesday. Only light accumulations of 1
to 3 inches are expected in the mountains with a dusting to around
an inch in the lower elevations.

A more potent storm system is expected to arrive later Tuesday
night and Wednesday with significant snowfall possible. Early
indications point to 6 to 9 inches in the mountains with up to a
foot in The Tetons. The far west valleys and lower elevations will
likely see 3 to 5 inches with locally higher amounts. This storm
system will be accompanied by strong west winds of 25 to 45 mph
in the mountains with 15 to 30 mph across the lower elevations
causing areas of blowing snow. Roads will likely become slick and
snow covered, especially with this second system.

Stay tuned for future statements and possible winter highlights in
the next day or two from this second system.



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