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Mountain Weather Forecast

Issued: 7:42 AM PST Tuesday, February 6, 2018
by Robert Hahn

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

Weather Synopsis for Tuesday & Wednesday

The Pacific Northwest will remain in a relatively stationary pattern on Tuesday and Wednesday with NW flow aloft driven by the gradient between a high pressure offshore and a deep low over Hudson's Bay. The high pressure should move slightly eastward, toward our region during the day on Tuesday.

Light drizzle or very light snow has been seen early Tuesday morning as a very weak convergence zone fizzles out from a long since departed system's post-frontal flow. 

The next approaching weak upper level trough will bring a warm front across the region, scouring out the cooler air in place. Warming will be significant late Tuesday night through Wednesday with most areas of the Cascades seeing a changeover to rain at 5000 ft around 4 AM on Wednesday, with a possible mix with rain at Washington Pass Wednesday early afternoon as warming spreads northward and to higher elevations throughout the day. Light rain and snow will arrive from Snoqualmie pass, northward, slightly increasing toward the Canadian border from Tuesday afternoon through through Wednesday morning.

Wednesday should witness a drying trend with mostly dry conditions by Wednesday afternoon in all areas except the Mt. Baker area, where some very light rain may linger.

Late Wednesday through Wednesday night, crest-level winds will increase from the moderate range to occasionally strong out ahead of a better organized shortwave poised to impact our region on Thursday. This system will feature a sharp cold front when it arrives.

Weather Forecast

Olympics
Tuesday Increasing clouds with a chance of light rain or snow.
Tuesday Night Increasing light rain or snow, particularly after midnight.
Wednesday Partly cloudy.
Clouds increasing and lowering. W-SW winds becoming moderate to strong at Hurricane Ridge.
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
Tuesday Decreasing drizzle, light rain or snow showers in weak convergence over the central Cascades in the morning, ending. Then, increasing light rain or snow from Snoqualmie Pass northward from late morning onward.
Tuesday Night Light rain and snow continues from Snoqualmie Pass northward. Warming begins overnight.
Wednesday Light rain and high elevation snow showers decreasing or ending from Snoqualmie pass northward, but likely lingering near Mt. Baker in the afternoon.
Increasing light to to moderate rain or snow in the north by morning. Increasing alpine winds becoming moderate to strong.
East Slopes of the Washington Cascades
Tuesday Mostly sunny east of the Cascade crest with clouds spilling over near the crest. Increasing clouds and very light rain or snow developing near the crest form late morning onward.
Tuesday Night Light rain and snow continues near the Cascade crest with clear weather further east.
Wednesday Light rain or high elevation snow showers decreasing or ending during the morning hours near the Cascade Crest from Snoqualmie pass northward.
Increasing light to moderate rain or snow in the north by morning. Increasing alpine winds becoming moderate to strong.
Mt. Hood
Tuesday Partly to mostly cloudy in the morning with decreasing clouds in the afternoon. Freezing levels rising strongly during the day.
Tuesday Night Fair weather with mostly clear skies and high freezing levels.
Wednesday Mostly sunny skies. High freezing levels.
Mostly clear with high clouds increasing by morning.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Tuesday Morning Snow Level 5000' 3000' 3500' None' None' 3500' None' 5500'
Tuesday Afternoon Snow Level 5500' 3500' 3500' None' None' 3500' None' 7500'
Tuesday Night Snow Level 6500' 3500' 3500' None' None' 4000' None' 8000'
Wednesday Morning Snow Level 7000' 4000' 4000' None' None' 5000' None' 8500'
Wednesday Afternoon Snow Level 7500' 5000' 5500' None' None' 6000' None' 9000'
Hurricane Ridge Elevation
Tuesday Morning Snow Level
5000'
Tuesday Afternoon Snow Level
5500'
Tuesday Night Snow Level
6500'
Wednesday Morning Snow Level
7000'
Wednesday Afternoon Snow Level
7500'
Wednesday Night Snow Level
7000'
Mt. Baker Elevation
Tuesday Morning Snow Level
3000'
Tuesday Afternoon Snow Level
3500'
Tuesday Night Snow Level
3500'
Wednesday Morning Snow Level
4000'
Wednesday Afternoon Snow Level
5000'
Wednesday Night Snow Level
5500'
Washington Pass Elevation
Tuesday Morning Snow Level
3500'
Tuesday Afternoon Snow Level
3500'
Tuesday Night Snow Level
3500'
Wednesday Morning Snow Level
4000'
Wednesday Afternoon Snow Level
5500'
Wednesday Night Snow Level
5500'
Leavenworth Elevation
Tuesday Morning Snow Level
None'
Tuesday Afternoon Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Night Snow Level
None'
Stevens Pass Elevation
Tuesday Morning Snow Level
None'
Tuesday Afternoon Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Night Snow Level
None'
Snoqualmie Pass Elevation
Tuesday Morning Snow Level
3500'
Tuesday Afternoon Snow Level
3500'
Tuesday Night Snow Level
4000'
Wednesday Morning Snow Level
5000'
Wednesday Afternoon Snow Level
6000'
Wednesday Night Snow Level
7000'
Mt. Rainier & Crystal Elevation
Tuesday Morning Snow Level
None'
Tuesday Afternoon Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Night Snow Level
None'
Mt. Hood Elevation
Tuesday Morning Snow Level
5500'
Tuesday Afternoon Snow Level
7500'
Tuesday Night Snow Level
8000'
Wednesday Morning Snow Level
8500'
Wednesday Afternoon Snow Level
9000'
Wednesday Night Snow Level
9000'

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

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Tuesday Morning W 10 - 20 SW 5 - 15 W 10 - 20 --- None - None W 15 - 25
Tuesday Afternoon W 10 - 20 WSW 10 - 20 W 10 - 20 --- None - None W 15 - 25
Tuesday Night W 20 - 30 WSW 15 - 25 W 10 - 20 --- None - None WNW 20 - 30
Wednesday Morning W 20 - 30 WSW 10 - 20 W 15 - 25 --- None - None WNW 15 - 25
Wednesday Afternoon W 15 - 25 W 15 - 25 W 15 - 25 --- None - None W 20 - 30
Hurricane Ridge Elevation
Tuesday Morning W 10 - 20
Tuesday Afternoon W 10 - 20
Tuesday Night W 20 - 30
Wednesday Morning W 20 - 30
Wednesday Afternoon W 15 - 25
Wednesday Night WSW 30 - 50
Mt. Baker Elevation
Tuesday Morning SW 5 - 15
Tuesday Afternoon WSW 10 - 20
Tuesday Night WSW 15 - 25
Wednesday Morning WSW 10 - 20
Wednesday Afternoon W 15 - 25
Wednesday Night WSW 25 - 35
Stevens and Snoqualmie Pass Elevation
Tuesday Morning W 10 - 20
Tuesday Afternoon W 10 - 20
Tuesday Night W 10 - 20
Wednesday Morning W 15 - 25
Wednesday Afternoon W 15 - 25
Wednesday Night W 30 - 40
Mt. Rainier Elevation
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Tuesday Night --- None - None
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Night --- None - None
Mt. Hood Elevation
Tuesday Morning W 15 - 25
Tuesday Afternoon W 15 - 25
Tuesday Night WNW 20 - 30
Wednesday Morning WNW 15 - 25
Wednesday Afternoon W 20 - 30
Wednesday Night WSW 25 - 35
Hurricane Ridge Direction - Speed
Tuesday Morning W 10 - 20
Tuesday Afternoon W 10 - 20
Tuesday Night W 20 - 30
Wednesday Morning W 20 - 30
Wednesday Afternoon W 15 - 25
Wednesday Night WSW 30 - 50
Mt. Baker Direction - Speed
Tuesday Morning SW 5 - 15
Tuesday Afternoon WSW 10 - 20
Tuesday Night WSW 15 - 25
Wednesday Morning WSW 10 - 20
Wednesday Afternoon W 15 - 25
Wednesday Night WSW 25 - 35
Stevens and Snoqualmie Pass Direction - Speed
Tuesday Morning W 10 - 20
Tuesday Afternoon W 10 - 20
Tuesday Night W 10 - 20
Wednesday Morning W 15 - 25
Wednesday Afternoon W 15 - 25
Wednesday Night W 30 - 40
Mt. Rainier Direction - Speed
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Tuesday Night --- None - None
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Night --- None - None
Mt. Hood Direction - Speed
Tuesday Morning W 15 - 25
Tuesday Afternoon W 15 - 25
Tuesday Night WNW 20 - 30
Wednesday Morning WNW 15 - 25
Wednesday Afternoon W 20 - 30
Wednesday Night WSW 25 - 35

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
Tuesday Morning WNW 30 - 40 WNW 25 - 35 NW 45 - 65 --- None - None NW 45 - 65
Tuesday Afternoon NW 35 - 50 NW 35 - 50 NW 40 - 60 --- None - None NW 30 - 40
Tuesday Night WNW 35 - 50 WNW 40 - 60 NW 40 - 60 --- None - None NW 35 - 50
Wednesday Morning WNW 40 - 60 WNW 45 - 65 WNW 50 - 70 --- None - None NW 46 - 50
Wednesday Afternoon W 45 - 65 W 55 - 75 W 60 - 80 --- None - None WNW 30 - 40
Mt. Baker Direction - Speed
Tuesday Morning WNW 30 - 40
Tuesday Afternoon NW 35 - 50
Tuesday Night WNW 35 - 50
Wednesday Morning WNW 40 - 60
Wednesday Afternoon W 45 - 65
Wednesday Night WSW 55 - 75
Washington Pass Direction - Speed
Tuesday Morning WNW 25 - 35
Tuesday Afternoon NW 35 - 50
Tuesday Night WNW 40 - 60
Wednesday Morning WNW 45 - 65
Wednesday Afternoon W 55 - 75
Wednesday Night WSW 60 - 80
Stevens and Snoqualmie Pass Direction - Speed
Tuesday Morning NW 45 - 65
Tuesday Afternoon NW 40 - 60
Tuesday Night NW 40 - 60
Wednesday Morning WNW 50 - 70
Wednesday Afternoon W 60 - 80
Wednesday Night WSW 65 - 85
Mt. Rainier Direction - Speed
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Tuesday Night --- None - None
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Night --- None - None
Mt. Hood Direction - Speed
Tuesday Morning NW 45 - 65
Tuesday Afternoon NW 30 - 40
Tuesday Night NW 35 - 50
Wednesday Morning NW 46 - 50
Wednesday Afternoon WNW 30 - 40
Wednesday Night W 40 - 60

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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