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Mountain Weather Forecast

Issued: 7:01 AM PST Wednesday, April 10, 2024
by Dennis D'Amico

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

Weather Synopsis for Wednesday & Thursday

Upper level ridging will traverse the Cascades today leading to a dry and mild day with light winds.  A Pacific frontal system upstream over northern Vancouver Island will slowly sag southward today, spreading increasing high clouds over the northern half of the forecast area and leading to some filtered sunshine over the Olympics and north Cascasdes.  Freezing levels will be on the rise today, peaking in the 6000-8000' range with mid-mountain maximum temperatures generally in the upper 30s to 40s. 

We'll see mild temperatures and limited cooling Wednesday night as high clouds increase ahead of the approaching frontal system. Light rain and snow should begin over the Olympics and northwest Cascades in the morning and slowly spread southward during the day.  The parent low center will pull south along the coastline, stalling the front's eastward progress Thursday. The south Cascades and Mt Hood area will see an increase in cloud cover but should remain dry. Snow/freezing levels will cool for areas closer to the frontal boundary in the afternoon.  Moderate S-SW ridgeline winds will develop over the Olympics and the Mt Baker on Thursday as well.  

Weather Forecast

Olympics
Wednesday Mostly sunny with periods of high clouds this morning, then partly sunny with high clouds and filtered sunshine in the afternoon.
Overcast.
West North
Wednesday Mostly sunny with periods of high clouds this morning, then partly sunny with high clouds and filtered sunshine in the afternoon.
Overcast.
West Central
Wednesday Mostly sunny with periods of high clouds this morning, then partly sunny with high clouds and filtered sunshine in the afternoon.
Overcast.
West South
Wednesday Mostly sunny. Occasional high clouds increasing in the afternoon.
Mostly cloudy in the evening, becoming overcast after midnight.
Stevens Pass
Wednesday Mostly sunny with a few high clouds this morning, then partly to mostly sunny with periods of high clouds and filtered sunshine in the afternoon. Light W ridgeline and Pass level winds.
Mostly cloudy in the evening, becoming overcast after midnight. Light W ridgeline and Pass level winds.
Snoqualmie Pass
Wednesday Mostly sunny with a few high clouds this morning, then partly to mostly sunny with periods of high clouds and filtered sunshine in the afternoon. Light W ridgeline and Pass level winds.
Mostly cloudy in the evening, becoming overcast after midnight. Light W ridgeline and Pass level winds.
East North
Wednesday Mostly sunny with a few high clouds this morning, then partly to mostly sunny with periods of high clouds and filtered sunshine in the afternoon.
Overcast.
East Central
Wednesday Mostly sunny with a few high clouds this morning, then partly to mostly sunny with periods of high clouds and filtered sunshine in the afternoon.
Mostly cloudy in the evening, becoming overcast after midnight.
East South
Wednesday Mostly sunny. Occasional high clouds increasing in the afternoon.
Partly cloudy in the evening, becoming mostly cloudy after midnight with increasing high clouds.
Mt. Hood
Wednesday Mostly sunny. Occasional high clouds increasing in the afternoon.
Partly cloudy in the evening, becoming mostly cloudy after midnight with increasing high clouds.

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 None' None' None' None' 4500' 4500' None' 6000'
Wednesday Afternoon Snow Level None' None' None' None' 6500' 6500' None' 8000'
Wednesday Evening Snow Level None' None' None' None' 6000' 6000' None' 8000'
Wednesday Night Snow Level None' None' None' None' 5500' 5500' None' 8000'
Thursday Morning Snow Level None' None' None' None' 5500' 6000' None' 7500'
Hurricane Ridge Elevation
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Evening Snow Level
None'
Wednesday Night Snow Level
None'
Thursday Morning Snow Level
None'
Thursday Afternoon Snow Level
None'
Mt. Baker Elevation
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Evening Snow Level
None'
Wednesday Night Snow Level
None'
Thursday Morning Snow Level
None'
Thursday Afternoon Snow Level
None'
Washington Pass Elevation
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Evening Snow Level
None'
Wednesday Night Snow Level
None'
Thursday Morning Snow Level
None'
Thursday Afternoon Snow Level
None'
Leavenworth Elevation
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Evening Snow Level
None'
Wednesday Night Snow Level
None'
Thursday Morning Snow Level
None'
Thursday Afternoon Snow Level
None'
Stevens Pass Elevation
Wednesday Morning Snow Level
4500'
Wednesday Afternoon Snow Level
6500'
Wednesday Evening Snow Level
6000'
Wednesday Night Snow Level
5500'
Thursday Morning Snow Level
5500'
Thursday Afternoon Snow Level
5000'
Snoqualmie Pass Elevation
Wednesday Morning Snow Level
4500'
Wednesday Afternoon Snow Level
6500'
Wednesday Evening Snow Level
6000'
Wednesday Night Snow Level
5500'
Thursday Morning Snow Level
6000'
Thursday Afternoon Snow Level
5000'
Mt. Rainier & Crystal Elevation
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Wednesday Evening Snow Level
None'
Wednesday Night Snow Level
None'
Thursday Morning Snow Level
None'
Thursday Afternoon Snow Level
None'
Mt. Hood Elevation
Wednesday Morning Snow Level
6000'
Wednesday Afternoon Snow Level
8000'
Wednesday Evening Snow Level
8000'
Wednesday Night Snow Level
8000'
Thursday Morning Snow Level
7500'
Thursday Afternoon Snow Level
7000'

* 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
5 am - 5 pm 5 pm - 5 am 5 am - 5 pm
Hurricane Ridge 0 0 LT 0.25
Mt Baker Ski Area 0 0 LT 0.25
Mt. Loop - Barlow Pass 0 0 LT 0.10
Stevens Pass 0 0 LT 0.10
Snoqualmie Pass 0 0 LT 0.10
Crystal Mt 0 0 LT 0.10
Paradise 0 0 LT 0.10
White Pass 0 0 0
Washington Pass 0 0 LT 0.10
Mission Ridge 0 0 0
Salmon la Sac - Gallagher Head 0 0 0
Tieton River - Darland Mt. 0 0 0
Mt Hood Meadows 0 0 0
0 0 0
Hurricane Ridge Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.25
Mt Baker Ski Area Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.25
Mt. Loop - Barlow Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
Stevens Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
Snoqualmie Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
Crystal Mt Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
Paradise Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
White Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Washington Pass Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday LT 0.10
Mission Ridge Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Salmon la Sac - Gallagher Head Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Tieton River - Darland Mt. Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Hood Meadows Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0
Timberline Precipitation Forecast
Wednesday 0
Wednesday Night 0
Thursday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Wednesday Morning --- None - None --- None - None --- None - None --- None - None WNW None - None
Wednesday Afternoon --- None - None --- None - None --- None - None --- None - None W None - None
Wednesday Evening --- None - None --- None - None --- None - None --- None - None SW None - None
Hurricane Ridge Elevation
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Baker Elevation
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Stevens and Snoqualmie Pass Elevation
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Rainier Elevation
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Hood Elevation
Wednesday Morning WNW None - None
Wednesday Afternoon W None - None
Wednesday Evening SW None - None
Wednesday Night WSW None - None
Hurricane Ridge Direction - Speed
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Baker Direction - Speed
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Rainier Direction - Speed
Wednesday Morning --- None - None
Wednesday Afternoon --- None - None
Wednesday Evening --- None - None
Wednesday Night --- None - None
Mt. Hood Direction - Speed
Wednesday Morning WNW None - None
Wednesday Afternoon W None - None
Wednesday Evening SW None - None
Wednesday Night WSW None - None

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

Previous forecast from April 9, 2024

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.