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US Extended Snowfall Outlook
Updated September 18, 2017

UNSETTLED ACROSS THE WEST --> This week we expect a few Gulf of Alaska storms to move through the western US, and drops snow to some mountain areas across Washington, Oregon (Cascades), Idaho, Montana, Wyoming (northern Rocky Mountains), California, Nevada (Tahoe), and Utah (Wasatch). By Saturday we may see some snow for Colorado also, as the trough weakens, warms up some, and shifts east. Luckily, the mountains and resorts in Colorado are so elevated, that despite the warming, snow is still possible. More details are coming. The East Coast (+ the resorts) will be sitting under a high pressure ridge, with warmer than average weather. CM

ThisWeek_18sep

BY and AFTER THIS WEEKEND...
High pressure ridging will start to dominate the western US, for quite a late summer season warm-up. This should affect all areas, though Colorado will be dealing with some unsettled weather to start (Sat and Sun). This ridge over the west should last through 7 to 10 days, turning unsettled again (storms) after the first few days of October, but more so by the 10th or so as low pressure deepens across the west (colder, snow more likely for many areas). CM

Next Week CM

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Sun Valley - Big Sky
HEADLINE... Oct 17th - The Climate Prediction Center reissued a La Niña watch today after discontinuing it last month, citing new model data and more favorable trends toward its formation in late fall or early winter.

Dec 04, 2016 - Sunday at x:xxpm PST
For now please see the US outlook. CM
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SnowMap Legend
CUSTOM FORECAST DETAILS
Weather Icon

↑35° / 2c°

↓24° / -4c°

Mountain Graphic

Sky Condition

Partly cloudy with widespread frost

Snow Potential

None Expected

Precipitation

None Expected

Wind

From the NNE at 3 to 7 MPH.

Weather Icon

↑41° / 5c°

↓29° / -2c°

Mountain Graphic

Sky Condition

Partly cloudy with widespread frost

Snow Potential

None Expected

Precipitation

None Expected

Wind

From the WNW at 3 to 11 MPH.

Weather Icon

↑43° / 6c°

↓29° / -2c°

Mountain Graphic

Sky Condition

Partly cloudy with slight chance of light snow showers

Snow Potential

We are expecting a trace to 1 inch of snowfall (1 to 3cm)

Precipitation

30% chance for snow. (Potential precip: 0.02in, 0.49mm)

Wind

From the WSW at 2 to 7 MPH.

Weather Icon

↑47° / 8c°

↓33° / 1c°

Mountain Graphic

Sky Condition

Mostly sunny

Snow Potential

None Expected

Precipitation

None Expected

Wind

From the SSW at 3 to 5 MPH.

Weather Icon

↑50° / 10c°

↓34° / 1c°

Mountain Graphic

Sky Condition

Mostly sunny

Snow Potential

None Expected

Precipitation

None Expected

Wind

From the ENE at 3 to 9 MPH.

Weather Icon

↑54° / 12c°

↓32° / 0c°

Mountain Graphic

Sky Condition

Mostly sunny

Snow Potential

None Expected

Precipitation

None Expected

Wind

From the SW at 3 to 7 MPH.

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