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Mountain Weather Forecast

Issued: 7:00 AM PST Wednesday, February 20, 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 Wednesday & Thursday

The Pacific Northwest sits near the western edge of a cool upper trough over the Western US. A moderate jetstream is bringing cool air south along the west coast from Alaska to California with a cool northwest flow pattern continuing across the region through the forecast period. Expect below normal temperatures and snow/freezing levels well below pass level.

A front passed and dropped SE of the region and continues to bring snow showers off a moderate, but decreasing NW flow to the Mt. Hood area where 2-4" of additional snow could fall. Meanwhile, a convergence zone has sagged south and is weakening and bringing some light snow to the Mt. Rainier area, particularly the Crystal area, but this feature should lose organization with very light snow showers continuing in the Mt. Rainier area through the early afternoon. Many areas will see some sun.

A weak surface boundary will bring colder air east of the Cascades during the evening hours and may spark some snow showers along the east slopes of the Cascades as it moves southward. This feature will shift pass flow easterly.

A weak ridge of high pressure will nose into the region on Thursday, bringing generally sunny weather and light winds to the region.

Weather Forecast

Hurricane Ridge
Flurries ending early, then becoming partly cloudy and mostly clearing in the afternoon. Cool. Light winds.
Mt. Baker
Partly cloudy. Cool. Light winds.
Washington Pass and Leavenworth
Partly cloudy. Cool. Light winds.
Stevens and Snoqualmie Pass
Chance of flurries in the morning. Mostly cloudy. Cool.
Mt. Rainier, Crystal and White Pass
Light snow in a weakening convergence zone favoring Crystal decreasing and ending. Cool. Light wind.
Mt. Hood
Decreasing light snow showers mostly in the morning hours with increasing sun breaks throughout the day. Cool. Moderate winds in the morning decreasing and becoming light by afternoon.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Wednesday Morning Snow Level 500' 0' 0' 0' 500' 500' 500' 1000'
Wednesday Afternoon Snow Level 500' 1000' 1000' 1000' 1500' 1000' 1500' 1500'
Wednesday Evening Snow Level 500' 1000' 1000' 1000' 1500' 1000' 1000' 1500'
Wednesday Night Snow Level* 500' 0' 0' 0' 0' 500' 0' 0'
Thursday Morning Freezing Level* 1000' 500' 0' 500' 500' 1000' 1000' 500'
Hurricane Ridge Elevation
Wednesday Morning Snow Level
500'
Wednesday Afternoon Snow Level
500'
Wednesday Evening Snow Level
500'
Wednesday Night Snow Level
500'
(Easterly Flow *)
Thursday Morning Freezing Level
1000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2000'
Mt. Baker Elevation
Wednesday Morning Snow Level
0'
Wednesday Afternoon Snow Level
1000'
Wednesday Evening Snow Level
1000'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
1500'
Washington Pass Elevation
Wednesday Morning Snow Level
0'
Wednesday Afternoon Snow Level
1000'
Wednesday Evening Snow Level
1000'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
0'
(Easterly Flow *)
Thursday Afternoon Freezing Level
1500'
Leavenworth Elevation
Wednesday Morning Snow Level
0'
Wednesday Afternoon Snow Level
1000'
Wednesday Evening Snow Level
1000'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2000'
Stevens Pass Elevation
Wednesday Morning Snow Level
500'
Wednesday Afternoon Snow Level
1500'
Wednesday Evening Snow Level
1500'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2000'
Snoqualmie Pass Elevation
Wednesday Morning Snow Level
500'
Wednesday Afternoon Snow Level
1000'
Wednesday Evening Snow Level
1000'
Wednesday Night Snow Level
500'
(Easterly Flow *)
Thursday Morning Freezing Level
1000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2000'
Mt. Rainier & Crystal Elevation
Wednesday Morning Snow Level
500'
Wednesday Afternoon Snow Level
1500'
Wednesday Evening Snow Level
1000'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
1000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2500'
Mt. Hood Elevation
Wednesday Morning Snow Level
1000'
Wednesday Afternoon Snow Level
1500'
Wednesday Evening Snow Level
1500'
Wednesday Night Snow Level
0'
(Easterly Flow *)
Thursday Morning Freezing Level
500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
2000'

* 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

Wednesday Wednesday Night Thursday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area 0 0 0
Washington Pass 0 0 0
Leavenworth 0 0 0
Stevens Pass LT 0.10 LT 0.10 0
Snoqualmie Pass LT 0.10 LT 0.10 0
Mission Ridge LT 0.10 LT 0.10 0
Crystal Mt LT 0.25 0 0
Paradise LT 0.10 0 0
White Pass LT 0.10 LT 0.10 0
Mt Hood Meadows 0.25 LT 0.10 0
0.25 - 0.50 LT 0.10 0
Hurricane Ridge Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Baker Ski Area Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Washington Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Leavenworth Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Stevens Pass Precipitation Forecast
Wednesday LT 0.10
Wednesday Night LT 0.10
Thursday 0
Snoqualmie Pass Precipitation Forecast
Wednesday LT 0.10
Wednesday Night LT 0.10
Thursday 0
Mission Ridge Precipitation Forecast
Wednesday LT 0.10
Wednesday Night LT 0.10
Thursday 0
Crystal Mt Precipitation Forecast
Wednesday LT 0.25
Wednesday Night 0
Thursday 0
Paradise Precipitation Forecast
Wednesday LT 0.10
Wednesday Night 0
Thursday 0
White Pass Precipitation Forecast
Wednesday LT 0.10
Wednesday Night LT 0.10
Thursday 0
Mt Hood Meadows Precipitation Forecast
Wednesday 0.25
Wednesday Night LT 0.10
Thursday 0
Timberline Precipitation Forecast
Wednesday 0.25 - 0.50
Wednesday Night LT 0.10
Thursday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Wednesday Morning NNW 0 - 10 ENE 0 - 10 WNW 0 - 10 WNW 0 - 10 WNW 20 - 30
Wednesday Afternoon N 0 - 10 NNE 0 - 10 W 0 - 10 NW 5 - 15 W 5 - 15
Wednesday Evening NNE 10 - 20 NNE 10 - 20 ENE 0 - 10 ENE 0 - 10 ENE 0 - 10
Wednesday Night N 10 - 20 NE 10 - 20 VAR 0 - 10 ENE 0 - 10 ENE 10 - 20
Thursday Morning N 5 - 15 NE 5 - 15 E 0 - 10 NE 0 - 10 ENE 10 - 20
Hurricane Ridge Elevation
Wednesday Morning NNW 0 - 10
Wednesday Afternoon N 0 - 10
Wednesday Evening NNE 10 - 20
Wednesday Night N 10 - 20
Thursday Morning N 5 - 15
Thursday Afternoon VAR 0 - 10
Mt. Baker Elevation
Wednesday Morning ENE 0 - 10
Wednesday Afternoon NNE 0 - 10
Wednesday Evening NNE 10 - 20
Wednesday Night NE 10 - 20
Thursday Morning NE 5 - 15
Thursday Afternoon VAR 0 - 10
Stevens and Snoqualmie Pass Elevation
Wednesday Morning WNW 0 - 10
Wednesday Afternoon W 0 - 10
Wednesday Evening ENE 0 - 10
Wednesday Night VAR 0 - 10
Thursday Morning E 0 - 10
Thursday Afternoon VAR 0 - 10
Mt. Rainier Elevation
Wednesday Morning WNW 0 - 10
Wednesday Afternoon NW 5 - 15
Wednesday Evening ENE 0 - 10
Wednesday Night ENE 0 - 10
Thursday Morning NE 0 - 10
Thursday Afternoon W 0 - 10
Mt. Hood Elevation
Wednesday Morning WNW 20 - 30
Wednesday Afternoon W 5 - 15
Wednesday Evening ENE 0 - 10
Wednesday Night ENE 10 - 20
Thursday Morning ENE 10 - 20
Thursday Afternoon ENE 5 - 15
Hurricane Ridge Direction - Speed
Wednesday Morning NNW 0 - 10
Wednesday Afternoon N 0 - 10
Wednesday Evening NNE 10 - 20
Wednesday Night N 10 - 20
Thursday Morning N 5 - 15
Thursday Afternoon VAR 0 - 10
Mt. Baker Direction - Speed
Wednesday Morning ENE 0 - 10
Wednesday Afternoon NNE 0 - 10
Wednesday Evening NNE 10 - 20
Wednesday Night NE 10 - 20
Thursday Morning NE 5 - 15
Thursday Afternoon VAR 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Wednesday Morning WNW 0 - 10
Wednesday Afternoon W 0 - 10
Wednesday Evening ENE 0 - 10
Wednesday Night VAR 0 - 10
Thursday Morning E 0 - 10
Thursday Afternoon VAR 0 - 10
Mt. Rainier Direction - Speed
Wednesday Morning WNW 0 - 10
Wednesday Afternoon NW 5 - 15
Wednesday Evening ENE 0 - 10
Wednesday Night ENE 0 - 10
Thursday Morning NE 0 - 10
Thursday Afternoon W 0 - 10
Mt. Hood Direction - Speed
Wednesday Morning WNW 20 - 30
Wednesday Afternoon W 5 - 15
Wednesday Evening ENE 0 - 10
Wednesday Night ENE 10 - 20
Thursday Morning ENE 10 - 20
Thursday Afternoon ENE 5 - 15

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

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

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