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Mountain Weather Forecast

Issued: 2:27 PM PST Saturday, February 16, 2019
by Robert Hahn

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

Weather Synopsis for Saturday night through Monday

Cooler than average conditions will continue for the foreseeable future.

A very weak disturbance has developed off the coast of Vancouver Island and is spinning slowly southward, providing enhanced light snow or snow showers on the back side of a broad upper-level trough sitting over the western US. Increased light snow shower activity is moving into the Cascades and will peak in the early evening hours with a flow pattern that generally rotates the moisture south of the Olympics into the Cascades. Mt. Hood will continue to see the most of this light shower activity with progressively less moisture as you head northward. As the low drops southward, it will reduce shower activity as a drying northerly flow moves over the region. Fraser River outflow will become moderate late Sunday night into Monday morning.

On Sunday, snow flurries will linger in some areas and the sun will come out in others.  February sunshine is likely to generate some cumulus clouds over the mountains in the afternoon with some additional flurries.

Sunday night, some light moisture may linger east of the Cascade Crest, producing very light snow. Elsewhere, expect cool and clearing conditions.

On Monday, a light NW flow will bring some clouds to the South Cascades as weak ridging noses into the region.

 

Weather Forecast

Hurricane Ridge
Saturday Night Partly cloudy with a chance of flurries. Cool. Light winds shifting NE and becoming light to moderate in the early morning hours.
Light flurries possibly lingering in the in the morning with light to moderate NE winds decreasing. Cool.
Mt. Baker
Saturday Night Mostly cloudy with periods of very light snow showers. Cool. Light alpine winds. Fraser outflow winds may affect the foothills with moderate winds.
Flurries ending early. Cool. Becoming partly sunny.
Washington Pass and Leavenworth
Saturday Night Chance of flurries in the north or periods of light snow in the central and south. Light winds.
In the north: Flurries ending early. Cool. Becoming partly sunny. In the south: Mostly cloudy with periods of snow flurries.
Stevens and Snoqualmie Pass
Saturday Night Periods of light snow, heaviest in the evening. Cool. Light alpine wind and light westerly pass wind becoming variable after midnight.
Mostly cloudy with periods of snow flurries. Cool. Light 5000 ft winds with light and variable winds at pass level.
Mt. Rainier, Crystal and White Pass
Saturday Night Periods of light snow, heaviest in the evening. Cool. Light winds.
Mostly cloudy with periods of snow flurries. Cool. Light winds.
Mt. Hood
Saturday Night Light to moderate snow in the evening, tapering to flurries. Cool. Light winds gusting moderate.
Mostly cloudy with a chance of snow flurries. 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
Saturday Evening Snow Level 1000' 2000' 2000' 1500' 2000' 2000' 2000' 1500'
Saturday Night Snow Level 500' 500' 500' 0' 1000' 500' 500' 500'
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' 5000' 1500' 1500' 1000' 1000' 1000'
Sunday Night Snow Level* 500' 0' 0' 0' 0' 0' 0' 0'
Monday Morning Freezing Level* 1000' 500' 500' 500' 500' 500' 500' 500'
Hurricane Ridge Elevation
Saturday Evening Snow Level
1000'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
500'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
500'
(Easterly Flow *)
Monday Morning Freezing Level
1000'
(Easterly Flow *)
Monday Afternoon Freezing Level
2000'
Mt. Baker Elevation
Saturday Evening Snow Level
2000'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1000'
Washington Pass Elevation
Saturday Evening Snow Level
2000'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
5000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1500'
Leavenworth Elevation
Saturday Evening Snow Level
1500'
Saturday Night Snow Level
0'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1000'
Stevens Pass Elevation
Saturday Evening Snow Level
2000'
Saturday Night Snow Level
1000'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1500'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1500'
Snoqualmie Pass Elevation
Saturday Evening Snow Level
2000'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1500'
Mt. Rainier & Crystal Elevation
Saturday Evening Snow Level
2000'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1500'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
2000'
Mt. Hood Elevation
Saturday Evening Snow Level
1500'
Saturday Night Snow Level
500'
Sunday Morning Snow Level
0'
Sunday Afternoon Snow Level
1000'
Sunday Evening Snow Level
1000'
Sunday Night Snow Level
0'
(Easterly Flow *)
Monday Morning Freezing Level
500'
(Easterly Flow *)
Monday Afternoon Freezing Level
1500'

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

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Saturday Evening ENE 5 - 15 VAR 0 - 10 W 5 - 15 W 5 - 15 W 10 - 20
Saturday Night ENE 5 - 15 NNE 0 - 10 WNW 5 - 15 W 5 - 15 W 10 - 20
Sunday Morning NE 5 - 15 NE 5 - 15 N 5 - 15 NW 5 - 15 NW 5 - 15
Hurricane Ridge Elevation
Saturday Evening ENE 5 - 15
Saturday Night ENE 5 - 15
Sunday Morning NE 5 - 15
Sunday Afternoon NNW 5 - 15
Mt. Baker Elevation
Saturday Evening VAR 0 - 10
Saturday Night NNE 0 - 10
Sunday Morning NE 5 - 15
Sunday Afternoon NNE 5 - 15
Stevens and Snoqualmie Pass Elevation
Saturday Evening W 5 - 15
Saturday Night WNW 5 - 15
Sunday Morning N 5 - 15
Sunday Afternoon W 5 - 15
Mt. Rainier Elevation
Saturday Evening W 5 - 15
Saturday Night W 5 - 15
Sunday Morning NW 5 - 15
Sunday Afternoon WSW 5 - 15
Mt. Hood Elevation
Saturday Evening W 10 - 20
Saturday Night W 10 - 20
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 5 - 15
Hurricane Ridge Direction - Speed
Saturday Evening ENE 5 - 15
Saturday Night ENE 5 - 15
Sunday Morning NE 5 - 15
Sunday Afternoon NNW 5 - 15
Mt. Baker Direction - Speed
Saturday Evening VAR 0 - 10
Saturday Night NNE 0 - 10
Sunday Morning NE 5 - 15
Sunday Afternoon NNE 5 - 15
Stevens and Snoqualmie Pass Direction - Speed
Saturday Evening W 5 - 15
Saturday Night WNW 5 - 15
Sunday Morning N 5 - 15
Sunday Afternoon W 5 - 15
Mt. Rainier Direction - Speed
Saturday Evening W 5 - 15
Saturday Night W 5 - 15
Sunday Morning NW 5 - 15
Sunday Afternoon WSW 5 - 15
Mt. Hood Direction - Speed
Saturday Evening W 10 - 20
Saturday Night W 10 - 20
Sunday Morning NW 5 - 15
Sunday Afternoon WNW 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
Saturday Evening N 0 - 10 NNW 5 - 15 NNW 5 - 15 NW 5 - 15 W 15 - 25
Saturday Night N 10 - 20 N 10 - 20 N 5 - 15 NNE 10 - 20 WSW 5 - 15
Sunday Morning N 15 - 25 N 15 - 25 NNE 10 - 20 N 5 - 15 NNE 10 - 20
Mt. Baker Direction - Speed
Saturday Evening N 0 - 10
Saturday Night N 10 - 20
Sunday Morning N 15 - 25
Sunday Afternoon NNW 10 - 20
Washington Pass Direction - Speed
Saturday Evening NNW 5 - 15
Saturday Night N 10 - 20
Sunday Morning N 15 - 25
Sunday Afternoon NNW 15 - 25
Stevens and Snoqualmie Pass Direction - Speed
Saturday Evening NNW 5 - 15
Saturday Night N 5 - 15
Sunday Morning NNE 10 - 20
Sunday Afternoon NNW 15 - 25
Mt. Rainier Direction - Speed
Saturday Evening NW 5 - 15
Saturday Night NNE 10 - 20
Sunday Morning N 5 - 15
Sunday Afternoon NNW 15 - 25
Mt. Hood Direction - Speed
Saturday Evening W 15 - 25
Saturday Night WSW 5 - 15
Sunday Morning NNE 10 - 20
Sunday Afternoon NNW 15 - 25

Extended Weather Synopsis for Monday night through Wednesday

Monday night, the weak ridge remains over the region with a cool system moving into the region on a northwest flow on Tuesday. Snow shower activity will begin Tuesday morning and continue through Wednesday as an upper trough digs in over the region. At this time the snowfall looks generally light to moderate throughout the storm with precipitation generally ending from south to north on Wednesday. Expect snow levels near sea level throughout the period.

Extended Snow/Freezing Levels

Mt. Baker Snoqualmie Pass Mt. Hood Easterly Flow *
Monday Night Freezing Level 500' - 1500' 500' - 1500' 1000' - 2000'
Tuesday Snow Level 0' - 1000' 0' - 1000' 0' - 1000' *
Tuesday Night Snow Level 0' - 1000' 0' - 1000' 1000' - 2000' *
Mt. Baker Elevation
Monday Night Freezing Level
500' - 1500'
Tuesday Snow Level
0' - 1000'
(Easterly Flow *)
Tuesday Night Snow Level
0' - 1000'
(Easterly Flow *)
Wednesday Snow Level
0' - 1000'
Snoqualmie Pass Elevation
Monday Night Freezing Level
500' - 1500'
Tuesday Snow Level
0' - 1000'
(Easterly Flow *)
Tuesday Night Snow Level
0' - 1000'
(Easterly Flow *)
Wednesday Snow Level
0' - 1000'
Mt. Hood Elevation
Monday Night Freezing Level
1000' - 2000'
Tuesday Snow Level
0' - 1000'
(Easterly Flow *)
Tuesday Night Snow Level
1000' - 2000'
(Easterly Flow *)
Wednesday Snow Level
5000' - 1500'

* 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.

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

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