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Mountain Weather Forecast

Issued: 2:04 PM PST Monday, April 22, 2024
by Dallas Glass

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

Weather Synopsis for Monday night through Wednesday

Looking across the region this Monday afternoon, there is plenty of sunshine, mild temperatures, and generally light winds. Basically, it's a beautiful spring day. The high pressure ridge providing so much blue sky will shift into central Washington overnight. As it does so, look for easterly winds to increase. This will be most pronounced along the Cascade Crest and through the mountain passes. High clouds also drift into the area on the backside of the ridge. They should be relatively thin and limit, but not fully prevent, overnight cooling. 

On Tuesday, high clouds and filtered sunshine should be the norm. Easterly winds ease in the morning hours as the high pressure continues to push further inland. Eventually, winds switch onshore later in the day. Westerly flow and a bit of moisture should draw more low clouds into the region Tuesday night. A weakening frontal system well to our north will drag a few showers into the area around lunchtime Wednesday. Precipitation will be most likely in the Olympics, Mountain Loop Highway, and North Cascades. For the rest of the region, mostly cloudy conditions should prevail. 

Weather Forecast

Olympics
Monday Night Partly to mostly clear with high clouds.
West North
Monday Night Partly to mostly clear with high clouds.
West Central
Monday Night Partly to mostly clear with high clouds. Light to moderate ESE winds developing.
Partly to mostly sunny with high clouds.
West South
Monday Night Partly to mostly clear with high clouds. Light to moderate ESE winds, stronger near Crystal Mt.
Partly to mostly sunny with high clouds.
Stevens Pass
Monday Night Partly to mostly clear with high clouds. Light E pass level flow becoming moderate.
Partly to mostly sunny with high clouds. Light E pass level flow turning W.
Snoqualmie Pass
Monday Night Partly to mostly clear with high clouds. Light to moderate ESE ridgeline winds. Light E pass level flow becoming moderate.
Partly to mostly sunny with high clouds. Ridgeline winds SE light to moderate becoming variable in the afternoon. Light E pass level flow turning W.
East North
Monday Night Partly to mostly clear with high clouds. Winds becoming SE light to moderate.
Partly to mostly sunny with high clouds.
East Central
Monday Night Partly to mostly clear with high clouds. Winds becoming SE light to moderate.
Partly to mostly sunny with high clouds.
East South
Monday Night Partly to mostly clear with high clouds. Light to moderate SE winds.
Partly to mostly sunny with high clouds.
Mt. Hood
Monday Night Partly to mostly clear with high clouds.
Partly to mostly sunny with high clouds.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Monday Evening Snow Level* None' None' None' None' 6500' 7000' None' 9000'
Monday Night Snow Level* None' None' None' None' 6500' 7000' None' 9000'
Tuesday Morning Snow Level* None' None' None' None' 6500' 7000' None' 9500'
Tuesday Afternoon Snow Level None' None' None' None' 8000' 8000' None' 9500'
Tuesday Evening Snow Level None' None' None' None' 7500' 8000' None' 9500'
Tuesday Night Snow Level None' None' None' None' 6500' 7000' None' 9000'
Wednesday Morning Snow Level None' None' None' None' 4500' 5000' None' 8500'
Hurricane Ridge Elevation
Monday Evening Snow Level
None'
(Easterly Flow *)
Monday Night Snow Level
None'
(Easterly Flow *)
Tuesday Morning Snow Level
None'
(Easterly Flow *)
Tuesday Afternoon Snow Level
None'
Tuesday Evening Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Mt. Baker Elevation
Monday Evening Snow Level
None'
(Easterly Flow *)
Monday Night Snow Level
None'
(Easterly Flow *)
Tuesday Morning Snow Level
None'
(Easterly Flow *)
Tuesday Afternoon Snow Level
None'
Tuesday Evening Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Washington Pass Elevation
Monday Evening Snow Level
None'
(Easterly Flow *)
Monday Night Snow Level
None'
(Easterly Flow *)
Tuesday Morning Snow Level
None'
(Easterly Flow *)
Tuesday Afternoon Snow Level
None'
Tuesday Evening Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Leavenworth Elevation
Monday Evening Snow Level
None'
(Easterly Flow *)
Monday Night Snow Level
None'
(Easterly Flow *)
Tuesday Morning Snow Level
None'
(Easterly Flow *)
Tuesday Afternoon Snow Level
None'
Tuesday Evening Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Stevens Pass Elevation
Monday Evening Snow Level
6500'
(Easterly Flow *)
Monday Night Snow Level
6500'
(Easterly Flow *)
Tuesday Morning Snow Level
6500'
(Easterly Flow *)
Tuesday Afternoon Snow Level
8000'
Tuesday Evening Snow Level
7500'
Tuesday Night Snow Level
6500'
Wednesday Morning Snow Level
4500'
Wednesday Afternoon Snow Level
5500'
Snoqualmie Pass Elevation
Monday Evening Snow Level
7000'
(Easterly Flow *)
Monday Night Snow Level
7000'
(Easterly Flow *)
Tuesday Morning Snow Level
7000'
(Easterly Flow *)
Tuesday Afternoon Snow Level
8000'
Tuesday Evening Snow Level
8000'
Tuesday Night Snow Level
7000'
Wednesday Morning Snow Level
5000'
Wednesday Afternoon Snow Level
5500'
Mt. Rainier & Crystal Elevation
Monday Evening Snow Level
None'
(Easterly Flow *)
Monday Night Snow Level
None'
(Easterly Flow *)
Tuesday Morning Snow Level
None'
(Easterly Flow *)
Tuesday Afternoon Snow Level
None'
Tuesday Evening Snow Level
None'
Tuesday Night Snow Level
None'
Wednesday Morning Snow Level
None'
Wednesday Afternoon Snow Level
None'
Mt. Hood Elevation
Monday Evening Snow Level
9000'
(Easterly Flow *)
Monday Night Snow Level
9000'
(Easterly Flow *)
Tuesday Morning Snow Level
9500'
(Easterly Flow *)
Tuesday Afternoon Snow Level
9500'
Tuesday Evening Snow Level
9500'
Tuesday Night Snow Level
9000'
Wednesday Morning Snow Level
8500'
Wednesday Afternoon Snow Level
7500'

* 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

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

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Monday Evening --- None - None --- None - None --- None - None --- None - None VAR None - None
Monday Night --- None - None --- None - None --- None - None --- None - None S None - None
Tuesday Morning --- None - None --- None - None --- None - None --- None - None SW None - None
Hurricane Ridge Elevation
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Baker Elevation
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Stevens and Snoqualmie Pass Elevation
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Rainier Elevation
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Hood Elevation
Monday Evening VAR None - None
Monday Night S None - None
Tuesday Morning SW None - None
Tuesday Afternoon W None - None
Hurricane Ridge Direction - Speed
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Baker Direction - Speed
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Rainier Direction - Speed
Monday Evening --- None - None
Monday Night --- None - None
Tuesday Morning --- None - None
Tuesday Afternoon --- None - None
Mt. Hood Direction - Speed
Monday Evening VAR None - None
Monday Night S None - None
Tuesday Morning SW None - None
Tuesday Afternoon W 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.

Extended Weather Synopsis for Wednesday night through Friday

Wednesday starts a period of unsettled weather. You could just about cover every 12-hour period with a "chance of showers" and mild temperatures. Onshore flow and a series of weak disturbances should provide light rain and high elevation snow. None of these storms look that impressive. Given the time of year, you can almost bank on a few moments of sunshine each day, particularly near and east of the Cascade crest. 

Extended Snow/Freezing Levels

Mt. Baker Snoqualmie Pass Mt. Hood Easterly Flow *
Wednesday Night Snow Level None' - None' None' - None' None' - None'
Thursday Snow Level None' - None' None' - None' None' - None'
Thursday Night Snow Level None' - None' None' - None' None' - None'
Mt. Baker Elevation
Wednesday Night Snow Level
None' - None'
Thursday Snow Level
None' - None'
Thursday Night Snow Level
None' - None'
Friday Snow Level
None' - None'
Snoqualmie Pass Elevation
Wednesday Night Snow Level
None' - None'
Thursday Snow Level
None' - None'
Thursday Night Snow Level
None' - None'
Friday Snow Level
None' - None'
Mt. Hood Elevation
Wednesday Night Snow Level
None' - None'
Thursday Snow Level
None' - None'
Thursday Night Snow Level
None' - None'
Friday Snow Level
None' - None'

* 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 I Extended Weather

Previous forecast from April 21, 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.