Issued: 1:58 PM PST Tuesday, January 25, 2022
by Dennis D'Amico

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I Extended Weather

Weather Synopsis

Mountain temperatures are in the 30s to 40s Tuesday afternoon with a few high clouds overhead. The high clouds are out ahead of a weak upper level disturbance that will pass through the region tonight. This weather feature will not produce any precipitation or strong winds. Strong upper level ridging will quickly rebuild offshore on Wednesday with another dry, mild and sunny day on tap for the mountains.  Wednesday should be the warmest day midweek along the east slopes of the Cascades with freezing levels nearly matching the frequently higher freezing levels along the west slopes of the Cascades. Lowland stratus and valley fog will stay entrenched for the same locations that have been living with the dreary conditions during this spell of high pressure.  Low clouds may once again be pulled through the eastern approaches and into the Cascade Passes overnight before burning off Wednesday morning.  

The upper level ridge will shift from along the coast and move inland Wednesday night and Thursday. Meanwhile, surface high pressure over southeastern B.C. will spread into the inland NW, increasing offshore flow. While Thursday should be sunny and mild once again, the east slopes should see a stronger refreeze Wednesday night and a slower rebound in temps/freezing levels on Thursday.  East winds through the Cascade Passes will also increase on Thursday, becoming moderate for the Cascade Passes. 

Weather Forecast

Olympics
West North
West Central
West South
Stevens Pass
Snoqualmie Pass
East North
East Central
East South
Mt. Hood
Use dropdown to select your zone
Tuesday Night Partly to mostly cloudy in the evening, then clearing late. Areas of valley low clouds and fog.
Wednesday Mostly sunny. Areas of valley low clouds and fog.
Tuesday Night Partly to mostly cloudy in the evening, then clearing late. Areas of valley low clouds and fog.
Wednesday Mostly sunny. Areas of valley low clouds and fog.
Tuesday Night Partly to mostly cloudy in the evening, then clearing late. Areas of valley low clouds and fog.
Wednesday Mostly sunny. Areas of valley low clouds and fog.
Tuesday Night Partly to mostly cloudy. Areas of valley low clouds and fog.
Wednesday Mostly sunny. Areas of valley low clouds and fog.
Tuesday Night Partly to mostly cloudy. Areas of low clouds near and east of the Pass. Light to moderate east winds at Pass level.
Wednesday Mostly sunny. Patchy low clouds at Pass level burning off during the morning. Light east winds at Pass level.
Tuesday Night Partly to mostly cloudy. Areas of low clouds near and east of the Pass. Moderate east winds at Pass level.
Wednesday Mostly sunny. Low clouds at Pass level burning off during the morning. Light to moderate east winds at Pass level.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Wednesday Mostly sunny. Valley low clouds and fog.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Wednesday Mostly sunny. Valley low clouds and fog.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Wednesday Mostly sunny. Valley low clouds and fog.
Tuesday Night Partly cloudy with periods of high clouds.
Wednesday Mostly sunny.

Precipitation (in)

Tuesday Night Wednesday Wednesday Night Thursday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0 0
Mt Baker Ski Area 0 0 0 0
Mt. Loop - Barlow Pass 0 0 0 0
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
Timberline 0 0 0 0
Hurricane Ridge Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Baker Ski Area Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Mt. Loop - Barlow Pass Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Stevens Pass Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Snoqualmie Pass Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Crystal Mt Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Paradise Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
White Pass Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Washington Pass Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Mission Ridge Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Salmon la Sac - Gallagher Head Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Tieton River - Darland Mt. Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Mt Hood Meadows Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0
Timberline Precipitation (in)
Tuesday Night 0
Wednesday 0
Wednesday Night 0
Thursday 0

Snow Level (ft)

Tuesday Evening* Tuesday Night* Wednesday Morning* Wednesday Afternoon* Wednesday Evening* Wednesday Night* Thursday Morning* Thursday Afternoon*
Olympics 8500' 8000' 8500' 9000' 9000' 9000' 9000' 9000'
West North 6500' 6500' 7500' 8000' 8000' 8000' 8000' 8500'
West Central 7500' 7500' 7500' 8500' 8000' 8000' 8000' 8500'
West South 8500' 8500' 8000' 9000' 9000' 9000' 9000' 9000'
Stevens Pass 6500' 4000' 7000' 8000' 6000' 4000' 6000' 8000'
Snoqualmie Pass 7000' 7000' 7000' 8000' 8000' 8000' 8500' 9000'
East North 4000' 2000' 5000' 7500' 4500' 2000' 4000' 7000'
East Central 4500' 3000' 5000' 7500' 4500' 3000' 4500' 7500'
East South 7000' 4500' 6000' 8000' 5500' 4500' 6500' 8500'
Mt. Hood 9000' 9000' 8000' 8500' 8500' 9000' 9000' 9000'
Olympics Elevation
Tuesday Evening* 8500'
Tuesday Night* 8000'
Wednesday Morning* 8500'
Wednesday Afternoon* 9000'
Wednesday Evening* 9000'
Wednesday Night* 9000'
Thursday Morning* 9000'
Thursday Afternoon* 9000'
West North Elevation
Tuesday Evening* 6500'
Tuesday Night* 6500'
Wednesday Morning* 7500'
Wednesday Afternoon* 8000'
Wednesday Evening* 8000'
Wednesday Night* 8000'
Thursday Morning* 8000'
Thursday Afternoon* 8500'
West Central Elevation
Tuesday Evening* 7500'
Tuesday Night* 7500'
Wednesday Morning* 7500'
Wednesday Afternoon* 8500'
Wednesday Evening* 8000'
Wednesday Night* 8000'
Thursday Morning* 8000'
Thursday Afternoon* 8500'
West South Elevation
Tuesday Evening* 8500'
Tuesday Night* 8500'
Wednesday Morning* 8000'
Wednesday Afternoon* 9000'
Wednesday Evening* 9000'
Wednesday Night* 9000'
Thursday Morning* 9000'
Thursday Afternoon* 9000'
Stevens Pass Elevation
Tuesday Evening* 6500'
Tuesday Night* 4000'
Wednesday Morning* 7000'
Wednesday Afternoon* 8000'
Wednesday Evening* 6000'
Wednesday Night* 4000'
Thursday Morning* 6000'
Thursday Afternoon* 8000'
Snoqualmie Pass Elevation
Tuesday Evening* 7000'
Tuesday Night* 7000'
Wednesday Morning* 7000'
Wednesday Afternoon* 8000'
Wednesday Evening* 8000'
Wednesday Night* 8000'
Thursday Morning* 8500'
Thursday Afternoon* 9000'
East North Elevation
Tuesday Evening* 4000'
Tuesday Night* 2000'
Wednesday Morning* 5000'
Wednesday Afternoon* 7500'
Wednesday Evening* 4500'
Wednesday Night* 2000'
Thursday Morning* 4000'
Thursday Afternoon* 7000'
East Central Elevation
Tuesday Evening* 4500'
Tuesday Night* 3000'
Wednesday Morning* 5000'
Wednesday Afternoon* 7500'
Wednesday Evening* 4500'
Wednesday Night* 3000'
Thursday Morning* 4500'
Thursday Afternoon* 7500'
East South Elevation
Tuesday Evening* 7000'
Tuesday Night* 4500'
Wednesday Morning* 6000'
Wednesday Afternoon* 8000'
Wednesday Evening* 5500'
Wednesday Night* 4500'
Thursday Morning* 6500'
Thursday Afternoon* 8500'
Mt. Hood Elevation
Tuesday Evening* 9000'
Tuesday Night* 9000'
Wednesday Morning* 8000'
Wednesday Afternoon* 8500'
Wednesday Evening* 8500'
Wednesday Night* 9000'
Thursday Morning* 9000'
Thursday Afternoon* 9000'

5000' Temperatures (°F)

Tuesday Night Wednesday
Max / Min Max / Min
Olympics 41 / 35 43 / 37
West North 37 / 32 41 / 35
West Central 36 / 31 41 / 35
West South 38 / 32 42 / 34
Stevens Pass 33 / 28 40 / 31
Snoqualmie Pass 35 / 29 41 / 33
East North 30 / 24 38 / 26
East Central 34 / 28 41 / 28
East South 35 / 29 42 / 29
Mt. Hood 41 / 33 43 / 34
Olympics 5000' Temperature Forecast
(Max / Min)
Tuesday Night 41 / 35
Wednesday 43 / 37
West North 5000' Temperature Forecast
(Max / Min)
Tuesday Night 37 / 32
Wednesday 41 / 35
West Central 5000' Temperature Forecast
(Max / Min)
Tuesday Night 36 / 31
Wednesday 41 / 35
West South 5000' Temperature Forecast
(Max / Min)
Tuesday Night 38 / 32
Wednesday 42 / 34
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Tuesday Night 33 / 28
Wednesday 40 / 31
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Tuesday Night 35 / 29
Wednesday 41 / 33
East North 5000' Temperature Forecast
(Max / Min)
Tuesday Night 30 / 24
Wednesday 38 / 26
East Central 5000' Temperature Forecast
(Max / Min)
Tuesday Night 34 / 28
Wednesday 41 / 28
East South 5000' Temperature Forecast
(Max / Min)
Tuesday Night 35 / 29
Wednesday 42 / 29
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Tuesday Night 41 / 33
Wednesday 43 / 34

Ridgeline Winds (mph)

Tuesday Evening Tuesday Night Wednesday Morning Wednesday Afternoon
Olympics WNW 5-15 NW 5-15 NW 0-10 NW 0-10
West North WSW 5-15 VAR 0-10 VAR 0-10 W 0-10
West Central W 5-15 NW 5-15 NW 5-15 NW 0-10
West South W 5-15 NW 5-15 NW 0-10 NNW 5-15
Stevens Pass WNW 5-15 WNW 5-15 NW 0-10 NW 0-10
Snoqualmie Pass NW 10-20 NW 10-20 NW 5-15 NW 5-15
East North WNW 10-20 NW 10-20 NW 5-15 NW 5-15
East Central W 10-20 NW 10-20 NW 5-15 NNW 5-15
East South W 5-15 NW 5-15 NW 5-15 NNW 0-10
Mt. Hood W 0-10 WNW 5-15 NW 5-15 VAR 0-10
Olympics Ridgeline Winds (mph)
Tuesday Evening WNW 5-15
Tuesday Night NW 5-15
Wednesday Morning NW 0-10
Wednesday Afternoon NW 0-10
West North Ridgeline Winds (mph)
Tuesday Evening WSW 5-15
Tuesday Night VAR 0-10
Wednesday Morning VAR 0-10
Wednesday Afternoon W 0-10
West Central Ridgeline Winds (mph)
Tuesday Evening W 5-15
Tuesday Night NW 5-15
Wednesday Morning NW 5-15
Wednesday Afternoon NW 0-10
West South Ridgeline Winds (mph)
Tuesday Evening W 5-15
Tuesday Night NW 5-15
Wednesday Morning NW 0-10
Wednesday Afternoon NNW 5-15
Stevens Pass Ridgeline Winds (mph)
Tuesday Evening WNW 5-15
Tuesday Night WNW 5-15
Wednesday Morning NW 0-10
Wednesday Afternoon NW 0-10
Snoqualmie Pass Ridgeline Winds (mph)
Tuesday Evening NW 10-20
Tuesday Night NW 10-20
Wednesday Morning NW 5-15
Wednesday Afternoon NW 5-15
East North Ridgeline Winds (mph)
Tuesday Evening WNW 10-20
Tuesday Night NW 10-20
Wednesday Morning NW 5-15
Wednesday Afternoon NW 5-15
East Central Ridgeline Winds (mph)
Tuesday Evening W 10-20
Tuesday Night NW 10-20
Wednesday Morning NW 5-15
Wednesday Afternoon NNW 5-15
East South Ridgeline Winds (mph)
Tuesday Evening W 5-15
Tuesday Night NW 5-15
Wednesday Morning NW 5-15
Wednesday Afternoon NNW 0-10
Mt. Hood Ridgeline Winds (mph)
Tuesday Evening W 0-10
Tuesday Night WNW 5-15
Wednesday Morning NW 5-15
Wednesday Afternoon VAR 0-10

Extended Weather Synopsis

The pattern finally starts to shift in the extended as weather systems aimed into central British Columbia flatten the upper level ridge that has dominated our weather for many days. Expect some high clouds and continued mild temperatures/freezing levels on Friday. A weak frontal system will try to reach the Olympics and northwest Cascades by the end of the day Saturday, but more significant and widespread precipitation will have to wait until the latter half of the weekend as a period of active weather returns. 

Extended Snow Level (ft)

Thursday Night* Friday * Friday Night Saturday
West North 7500' 6500' 4500' 4500'
Snoqualmie Pass 9000' 6500' 6000' 5000'
Mt. Hood 10000' 8000' 7500' 7000'
West North Elevation
Thursday Night* 7500'
Friday * 6500'
Friday Night 4500'
Saturday 4500'
Snoqualmie Pass Elevation
Thursday Night* 9000'
Friday * 6500'
Friday Night 6000'
Saturday 5000'
Mt. Hood Elevation
Thursday Night* 10000'
Friday * 8000'
Friday Night 7500'
Saturday 7000'

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I Extended Weather

Previous forecast from Jan 25, 2022

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.

The 5000’ temperature forecast does not imply a trend over the 12 hr period and only represents the max and min temperatures within a 12 hr period in the zone. The 6-hr snow level forecast, the forecast discussion, and weather forecast sections may add detail regarding temperature trends.

The snow level forecast represents the general snow level over a 6 hr time period. Freezing levels are forecast when precipitation is not expected.

*Easterly or offshore flow is highlighted with an asterisk when we expect relatively cool east winds in the major Cascade Passes. Easterly flow will often lead to temperature inversions and is a key variable for forecasting precipitation type in the Cascade Passes. Strong easterly flow events can affect terrain on a more regional scale.

Ridgeline winds are the average wind speed and direction over a 6 hr time period.

The wind forecast represents an elevation range instead of a single elevation slice. The elevation range overlaps with the near and above treeline elevation bands in the avalanche forecast and differs per zone.

Wind direction indicates the direction the wind originates or comes from on the 16-point compass rose.

Water Equivalent (WE) is the liquid water equivalent of all precipitation types; rain, snow, ice pellets, etc., forecast to the hundredth of an inch at specific locations. To use WE as a proxy for snowfall amounts, start with a snow to water ratio of 10:1 (10 inches of snow = 1 inch WE). Temperatures at or near freezing will generally have a lower ratio (heavy wet snow) and very cold temperatures can have a much higher ratio (dry fluffy snow).

The label LT, is shorthand for ‘less than’.

Updated Mountain Weather Zone Name Changes – December 2020