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Mountain Weather Forecast

Issued: 8:32 AM PST Friday, April 28, 2017
by Kenny Kramer

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

Weather Synopsis for Friday & Saturday

Weak onshore flow is maintaining mainly low clouds early Friday morning in the wake of a passing disturbance Thursday. 

Upper level high pressure is rebuilding offshore early Friday and will slowly move over the region late Friday and early Saturday. Skies at mid and upper elevations are clearing fast early Friday as the web cam reveals Mt Rainier in all her glory Friday morning.

The ridge should cause further clearing through the day and a slow warming trend with light NW flow aloft.

Skies should remain mostly clear overnight as the ridge moves inland over the area.

An upper trough should ride over the ridge across the NE Pacific Saturday to flatten the ridge and increase westerly flow. A frontal system associated with the disturbance should spread increasing clouds across the Olympics and NW Washington Cascades early Saturday. Clouds should increase and spread to the remaining forecast areas through the day Saturday with light precipitation reaching the Olympics and Mt Baker area Saturday afternoon.

The main frontal passage should move across the Cacades Saturday night, bringing a period of light to moderate precipitation at moderate freezing levels.

Weather forecast

Olympics
Friday

Mostly sunny with gradual warming. Light winds.

Friday Night

Partly or mostly clear in the evening. Increasing high clouds after midnight.

Saturday Morning

Increasing clouds becoming mostly cloudy.

Light rain and snow developing Saturday afternoon. Light to briefly moderate rain and snow Saturday night.

Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
Friday Morning

Areas of low clouds with a chance of showers, mainly Mt Baker area. Otherwise becoming mostly sunny higher elevations. Light winds.

Friday Afternoon

Partly or mostly sunny.

Friday Night

Partly or mostly clear.

Saturday

Increasing high clouds. Clouds lowering in the north with a chance of light rain or snow Saturday afternoon.

Light rain and snow developing in the north Saturday afternoon and in the central and south by evening or early Saturday night. Light to briefly moderate rain and snow Saturday night.

East slopes of the Washington Cascades
Friday

Mostly sunny.

Friday Night

Mostly clear.

Saturday

Increasing high clouds.

Periods of light rain and snow.

Mt. Hood Area
Friday

Mostly sunny.

Friday Night

Partly or mostly clear.

Saturday

Clear early with increasing high clouds.

Light rain and snow developing Saturday evening. Light to briefly moderate rain and snow Saturday night.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Friday Morning Freezing Level 4000' 4000' 4000' None' None' 4000' None' 4500'
Friday Afternoon - Saturday Morning Freezing Level 5500' 5500' 5500' None' None' 5500' None' 6000'
Hurricane Ridge Elevation
Friday Morning Freezing Level
4000'
Friday Afternoon - Saturday Morning Freezing Level
5500'
Friday Afternoon - Friday Night Snow Level
5000'
Mt. Baker Elevation
Friday Morning Freezing Level
4000'
Friday Afternoon - Saturday Morning Freezing Level
5500'
Friday Afternoon - Friday Night Snow Level
5000'
Washington Pass Elevation
Friday Morning Freezing Level
4000'
Friday Afternoon - Saturday Morning Freezing Level
5500'
Friday Afternoon - Friday Night Snow Level
5000'
Leavenworth Elevation
Friday Morning Freezing Level
None'
Friday Afternoon - Saturday Morning Freezing Level
None'
Friday Afternoon - Friday Night Snow Level
None'
Stevens Pass Elevation
Friday Morning Freezing Level
None'
Friday Afternoon - Saturday Morning Freezing Level
None'
Friday Afternoon - Friday Night Snow Level
None'
Snoqualmie Pass Elevation
Friday Morning Freezing Level
4000'
Friday Afternoon - Saturday Morning Freezing Level
5500'
Friday Afternoon - Friday Night Snow Level
5500'
Mt. Rainier & Crystal Elevation
Friday Morning Freezing Level
None'
Friday Afternoon - Saturday Morning Freezing Level
None'
Friday Afternoon - Friday Night Snow Level
None'
Mt. Hood Elevation
Friday Morning Freezing Level
4500'
Friday Afternoon - Saturday Morning Freezing Level
6000'
Friday Afternoon - Friday Night Snow Level
6500'

* 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

Saturday Sunday
Hurricane Ridge 0 LT 0.25
Mt Baker Ski Area LT 0.10 0.50
Washington Pass 0 LT 0.25
Stevens Pass 0 0.25
Snoqualmie Pass 0 0.25
Mission Ridge 0 LT 0.25
Crystal Mt 0 LT 0.25
Paradise 0 0.25 - 0.50
White Pass 0 LT 0.25
Mt Hood Meadows 0 0.25
0 0.25
Hurricane Ridge Precipitation Forecast
Saturday 0
Sunday LT 0.25
Mt Baker Ski Area Precipitation Forecast
Saturday LT 0.10
Sunday 0.50
Washington Pass Precipitation Forecast
Saturday 0
Sunday LT 0.25
Stevens Pass Precipitation Forecast
Saturday 0
Sunday 0.25
Snoqualmie Pass Precipitation Forecast
Saturday 0
Sunday 0.25
Mission Ridge Precipitation Forecast
Saturday 0
Sunday LT 0.25
Crystal Mt Precipitation Forecast
Saturday 0
Sunday LT 0.25
Paradise Precipitation Forecast
Saturday 0
Sunday 0.25 - 0.50
White Pass Precipitation Forecast
Saturday 0
Sunday LT 0.25
Mt Hood Meadows Precipitation Forecast
Saturday 0
Sunday 0.25
Timberline Precipitation Forecast
Saturday 0
Sunday 0.25

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Friday - Friday WNW 10 - 20 WNW 5 - 15 WNW 10 - 20 --- None - None WNW 10 - 20
Friday Night WNW 5 - 15 WNW 5 - 15 WNW 5 - 15 --- None - None WNW 10 - 20
Saturday Morning SW 0 - 10 SW 0 - 10 SW 0 - 10 --- None - None WSW 0 - 10
Saturday Afternoon SSW 20 - 30 SSW 15 - 25 SW 10 - 20 --- None - None WSW 10 - 20
Hurricane Ridge Elevation
Friday - Friday WNW 10 - 20
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SSW 20 - 30
Saturday Night SW 15 - 25
Mt. Baker Elevation
Friday - Friday WNW 5 - 15
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SSW 15 - 25
Saturday Night SW 15 - 25
Stevens and Snoqualmie Pass Elevation
Friday - Friday WNW 10 - 20
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 10 - 20
Saturday Night SW 25 - 35
Mt. Rainier Elevation
Friday - Friday --- None - None
Friday Night --- None - None
Saturday Morning --- None - None
Saturday Afternoon --- None - None
Saturday Night --- None - None
Mt. Hood Elevation
Friday - Friday WNW 10 - 20
Friday Night WNW 10 - 20
Saturday Morning WSW 0 - 10
Saturday Afternoon WSW 10 - 20
Saturday Night SW 20 - 30
Hurricane Ridge Direction - Speed
Friday - Friday WNW 10 - 20
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SSW 20 - 30
Saturday Night SW 15 - 25
Mt. Baker Direction - Speed
Friday - Friday WNW 5 - 15
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SSW 15 - 25
Saturday Night SW 15 - 25
Stevens and Snoqualmie Pass Direction - Speed
Friday - Friday WNW 10 - 20
Friday Night WNW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 10 - 20
Saturday Night SW 25 - 35
Mt. Rainier Direction - Speed
Friday - Friday --- None - None
Friday Night --- None - None
Saturday Morning --- None - None
Saturday Afternoon --- None - None
Saturday Night --- None - None
Mt. Hood Direction - Speed
Friday - Friday WNW 10 - 20
Friday Night WNW 10 - 20
Saturday Morning WSW 0 - 10
Saturday Afternoon WSW 10 - 20
Saturday Night SW 20 - 30

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds and the 9000 ft winds below also 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
Friday Morning NNW 5 - 10 NNW 5 - 10 NNW 5 - 15 --- None - None NNW 10 - 20
Friday Afternoon - Friday Night WNW 5 - 15 WNW 5 - 15 WNW 5 - 15 --- None - None WNW 5 - 15
Saturday Morning W 15 - 25 W 5 - 15 W 10 - 20 --- None - None W 10 - 20
Mt. Baker Direction - Speed
Friday Morning NNW 5 - 10
Friday Afternoon - Friday Night WNW 5 - 15
Saturday Morning W 15 - 25
Saturday Afternoon - Saturday Night W 30 - 40
Washington Pass Direction - Speed
Friday Morning NNW 5 - 10
Friday Afternoon - Friday Night WNW 5 - 15
Saturday Morning W 5 - 15
Saturday Afternoon - Saturday Night W 30 - 40
Stevens and Snoqualmie Pass Direction - Speed
Friday Morning NNW 5 - 15
Friday Afternoon - Friday Night WNW 5 - 15
Saturday Morning W 10 - 20
Saturday Afternoon - Saturday Night W 30 - 40
Mt. Rainier Direction - Speed
Friday Morning --- None - None
Friday Afternoon - Friday Night --- None - None
Saturday Morning --- None - None
Saturday Afternoon - Saturday Night --- None - None
Mt. Hood Direction - Speed
Friday Morning NNW 10 - 20
Friday Afternoon - Friday Night WNW 5 - 15
Saturday Morning W 10 - 20
Saturday Afternoon - Saturday Night W 30 - 40

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.

NWAC Spring Forecast Schedule

The NWAC issued daily mountain weather and avalanche forecasts through Saturday, April 15th. Mountain weather and avalanche forecasts will be issued during the spring transition April 20-22nd and April 27-29th. Weekend outlooks will be issued Thursdays, May 4th, 11th, 18th and 25th.