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Mountain Weather Forecast

Issued: 6:40 AM PST Sunday, February 17, 2019
by Robert Hahn

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

Weather Synopsis for Sunday & Monday

An upper low over NW Oregon Sunday morning will drop SSE, giving way to a drying NNE flow across the region. Moderate Fraser river outflow is creating some light upslope snowfall along the northern edge of the Olympics, but this should diminish and end by 10 AM. NNE low-level winds may produce very light upslope snow flurries in some areas east of the Cascade Crest, such as the Wenatchee Mountains. In both cases, accumulations of around an inch or less are expected. Expect generally clearing skies today with some low clouds lingering in the Central Cascades with little mixing of the atmosphere.

Sunday night, the flow will be northerly and a modest surge of modified arctic air will move southward, east of the Cascade Crest. Very light upslope flow and snow flurries in areas such as the Wenatchee mountains is may continue. Otherwise, expect mostly clear skies and light winds with patchy low clouds and fog.

On Monday, very weak ridging will nose into the Pacific NW and southern British Columbia with northerly flow continuing. Mostly sunny conditions are expected with trace amounts of moisture touching off a few flurries in some locations.

Temperatures will remain below the seasonal norms throughout the forecast period. 

Weather Forecast

Hurricane Ridge
Light snow will fall with upslope NE flow early, then expect skies to become mostly clear. Cool. Light winds.
Mt. Baker
Mostly sunny with some high or mid-level clouds. Cool. Light winds, moderate in the low-elevation foothills.
Washington Pass and Leavenworth
Mostly sunny with some light flurries and minor accumulation possible in the Wenatchee mountains. Some low-level cloud in the south. Cool. Light winds.
Stevens and Snoqualmie Pass
Low-level cloud likely for Snoqualmie Pass with clearing possible. Clearing skies likely at Stevens Pass. Cool. Light and variable winds at pass level with light W wind at 5000 ft.
Mt. Rainier, Crystal and White Pass
Low clouds and fog giving way to partial clearing with flurries possible throughout the day. Cool. Light winds.
Mt. Hood
Low clouds and fog gradually giving way to clear skies. Cool. Light winds.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Sunday Morning Snow Level 500' 0' 0' 0' 0' 0' 0' 0'
Sunday Afternoon Snow Level 1000' 1000' 1000' 1500' 1500' 1500' 1500' 1000'
Sunday Evening Snow Level 1500' 1000' 1000' 1500' 1500' 1500' 1000' 1500'
Sunday Night Snow Level* 500' 0' 0' 0' 0' 0' 0' 0'
Monday Morning Snow Level* 500' 0' 0' 0' 0' 0' 0' 0'
Hurricane Ridge Elevation
Sunday Morning Snow Level
500'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
500'
(Easterly Flow *)
Monday Morning Snow Level
500'
(Easterly Flow *)
Monday Afternoon Snow Level
1000'
Mt. Baker Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
500'
Washington Pass Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
1000'
Leavenworth Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
500'
Stevens Pass Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
1000'
Snoqualmie Pass Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
1000'
Mt. Rainier & Crystal Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
1500'
Mt. Hood Elevation
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Snow Level
0'
(Easterly Flow *)
Monday Afternoon Snow Level
1000'

* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.

Precipitation Forecast

Sunday Sunday Night Monday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 0 0
Mt Baker Ski Area 0 0 0
Washington Pass 0 0 0
Leavenworth 0 0 0
Stevens Pass 0 LT 0.10 0
Snoqualmie Pass 0 0 0
Mission Ridge LT 0.10 LT 0.10 0
Crystal Mt LT 0.10 0 0
Paradise 0 0 0
White Pass LT 0.10 LT 0.10 0
Mt Hood Meadows 0 0 LT 0.10
0 0 LT 0.10
Hurricane Ridge Precipitation Forecast
Sunday LT 0.10
Sunday Night 0
Monday 0
Mt Baker Ski Area Precipitation Forecast
Sunday 0
Sunday Night 0
Monday 0
Washington Pass Precipitation Forecast
Sunday 0
Sunday Night 0
Monday 0
Leavenworth Precipitation Forecast
Sunday 0
Sunday Night 0
Monday 0
Stevens Pass Precipitation Forecast
Sunday 0
Sunday Night LT 0.10
Monday 0
Snoqualmie Pass Precipitation Forecast
Sunday 0
Sunday Night 0
Monday 0
Mission Ridge Precipitation Forecast
Sunday LT 0.10
Sunday Night LT 0.10
Monday 0
Crystal Mt Precipitation Forecast
Sunday LT 0.10
Sunday Night 0
Monday 0
Paradise Precipitation Forecast
Sunday 0
Sunday Night 0
Monday 0
White Pass Precipitation Forecast
Sunday LT 0.10
Sunday Night LT 0.10
Monday 0
Mt Hood Meadows Precipitation Forecast
Sunday 0
Sunday Night 0
Monday LT 0.10
Timberline Precipitation Forecast
Sunday 0
Sunday Night 0
Monday LT 0.10

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Sunday Morning NE 5 - 15 NE 5 - 15 NW 5 - 15 NW 5 - 15 NW 5 - 15
Sunday Afternoon NW 5 - 15 N 5 - 15 WNW 5 - 15 WNW 5 - 15 WNW 5 - 15
Sunday Evening NW 5 - 15 NE 5 - 15 WNW 5 - 15 WNW 5 - 15 W 5 - 15
Sunday Night NNW 5 - 15 ENE 0 - 10 W 5 - 15 WNW 5 - 15 W 10 - 20
Monday Morning VAR 0 - 10 VAR 0 - 10 W 0 - 10 W 5 - 15 W 5 - 15
Hurricane Ridge Elevation
Sunday Morning NE 5 - 15
Sunday Afternoon NW 5 - 15
Sunday Evening NW 5 - 15
Sunday Night NNW 5 - 15
Monday Morning VAR 0 - 10
Monday Afternoon WSW 5 - 15
Mt. Baker Elevation
Sunday Morning NE 5 - 15
Sunday Afternoon N 5 - 15
Sunday Evening NE 5 - 15
Sunday Night ENE 0 - 10
Monday Morning VAR 0 - 10
Monday Afternoon WSW 5 - 15
Stevens and Snoqualmie Pass Elevation
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening WNW 5 - 15
Sunday Night W 5 - 15
Monday Morning W 0 - 10
Monday Afternoon WSW 5 - 15
Mt. Rainier Elevation
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening WNW 5 - 15
Sunday Night WNW 5 - 15
Monday Morning W 5 - 15
Monday Afternoon W 5 - 15
Mt. Hood Elevation
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening W 5 - 15
Sunday Night W 10 - 20
Monday Morning W 5 - 15
Monday Afternoon W 10 - 20
Hurricane Ridge Direction - Speed
Sunday Morning NE 5 - 15
Sunday Afternoon NW 5 - 15
Sunday Evening NW 5 - 15
Sunday Night NNW 5 - 15
Monday Morning VAR 0 - 10
Monday Afternoon WSW 5 - 15
Mt. Baker Direction - Speed
Sunday Morning NE 5 - 15
Sunday Afternoon N 5 - 15
Sunday Evening NE 5 - 15
Sunday Night ENE 0 - 10
Monday Morning VAR 0 - 10
Monday Afternoon WSW 5 - 15
Stevens and Snoqualmie Pass Direction - Speed
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening WNW 5 - 15
Sunday Night W 5 - 15
Monday Morning W 0 - 10
Monday Afternoon WSW 5 - 15
Mt. Rainier Direction - Speed
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening WNW 5 - 15
Sunday Night WNW 5 - 15
Monday Morning W 5 - 15
Monday Afternoon W 5 - 15
Mt. Hood Direction - Speed
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Sunday Evening W 5 - 15
Sunday Night W 10 - 20
Monday Morning W 5 - 15
Monday Afternoon W 10 - 20

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.

Free Winds at 9000' (mph)

Mt. Baker Washington Pass Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Sunday Morning N 15 - 25 N 15 - 25 N 10 - 20 NNE 10 - 20 NE 10 - 20
Sunday Afternoon NNW 10 - 20 NNW 15 - 25 NNW 20 - 30 N 20 - 30 NNW 10 - 20
Sunday Evening NNW 5 - 15 NNW 10 - 20 NNW 15 - 25 NNW 20 - 30 N 15 - 25
Sunday Night N 10 - 20 NW 10 - 20 NW 10 - 20 NW 15 - 25 NNW 20 - 30
Monday Morning NNW 15 - 25 NNW 15 - 25 NNW 20 - 30 NNW 20 - 30 NNW 15 - 25
Mt. Baker Direction - Speed
Sunday Morning N 15 - 25
Sunday Afternoon NNW 10 - 20
Sunday Evening NNW 5 - 15
Sunday Night N 10 - 20
Monday Morning NNW 15 - 25
Monday Afternoon NNW 10 - 20
Washington Pass Direction - Speed
Sunday Morning N 15 - 25
Sunday Afternoon NNW 15 - 25
Sunday Evening NNW 10 - 20
Sunday Night NW 10 - 20
Monday Morning NNW 15 - 25
Monday Afternoon NNW 20 - 30
Stevens and Snoqualmie Pass Direction - Speed
Sunday Morning N 10 - 20
Sunday Afternoon NNW 20 - 30
Sunday Evening NNW 15 - 25
Sunday Night NW 10 - 20
Monday Morning NNW 20 - 30
Monday Afternoon NNW 20 - 30
Mt. Rainier Direction - Speed
Sunday Morning NNE 10 - 20
Sunday Afternoon N 20 - 30
Sunday Evening NNW 20 - 30
Sunday Night NW 15 - 25
Monday Morning NNW 20 - 30
Monday Afternoon NNW 20 - 30
Mt. Hood Direction - Speed
Sunday Morning NE 10 - 20
Sunday Afternoon NNW 10 - 20
Sunday Evening N 15 - 25
Sunday Night NNW 20 - 30
Monday Morning NNW 15 - 25
Monday Afternoon NNW 20 - 30

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.