Issued: 7:06 AM 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

Weather Synopsis

A strong ridge of high pressure remains anchored offshore and will keep us dry through the rest of the week. We have a few subtle wrinkles this morning as east flow through the Cascade Passes and cool southeasterlies down at Mt Hood have temporarily depressed freezing levels to match the cooler east slopes of the Cascades. Mid and upper mountain temperatures are generally above freezing west of the crest and below freezing near and east of the Cascade crest.

As ridgeline winds become more westerly this afternoon, look for temperature inversions/valley fog to continue but the low clouds in the Cascade Passes should mix out/clear and freezing levels and temperatures will rise. Entrenched lowland stratus and valley fog will continue. Along the east slopes of the Cascades, cooler conditions will dominate but as you travel closer to the Cascade crest you can expect milder freezing levels and temperatures. 

A "dry" upper level weather disturbance will ripple down the ridge from the NW tonight, spreading high clouds into the region this afternoon through overnight. There will be a temporary dip near and east of the crest in freezing levels tonight but Wednesday should be warmer as the upper level ridge amplifies offshore.  Freezing levels further west of the Cascade Crest will stay mild in the short term. 

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 Mostly sunny in the morning, then partly to mostly sunny with high clouds and filtered sunshine in the afternoon. 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.
Tuesday Mostly sunny in the morning, then partly to mostly sunny with high clouds and filtered sunshine in the afternoon. 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.
Tuesday Mostly sunny in the morning, then partly to mostly sunny with high clouds and filtered sunshine in the afternoon. 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.
Tuesday Mostly sunny in the morning with a few high clouds in the afternoon. Areas of valley low clouds and fog.
Tuesday Night Partly to mostly cloudy. Areas of valley low clouds and fog.
Tuesday Mostly sunny. Low clouds lower slopes breaking up in the afternoon. Light to moderate E-SE winds at Pass level and ridgeline decreasing in the afternoon with ridgeline winds becoming westerly.
Tuesday Night Partly to mostly cloudy. Low clouds at Pass level. Light to moderate east winds at Pass level.
Tuesday Mostly sunny. Low clouds lower slopes breaking up in the afternoon. Moderate E-SE winds at Pass level and ridgeline decreasing in the afternoon with ridgeline winds becoming westerly.
Tuesday Night Partly to mostly cloudy. Low clouds at Pass level. Moderate east winds at Pass level.
Tuesday Mostly sunny in the morning, then partly to mostly sunny with high clouds and filtered sunshine in the afternoon. Valley low clouds and fog. Higher freezing levels/milder near the Cascade Crest.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Tuesday Mostly sunny in the morning with a few high clouds in the afternoon. Valley low clouds and fog. Higher freezing levels/milder near the Cascade Crest.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Tuesday Mostly sunny in the morning with a few high clouds in the afternoon. Valley low clouds and fog. Higher freezing levels/milder near the Cascade Crest.
Tuesday Night Partly to mostly cloudy. Valley low clouds and fog.
Tuesday Mostly sunny. A few high clouds late. Moderate to strong E-SE winds this morning decreasing by late morning. Colder east side of the mountain in the morning.
Tuesday Night Partly to mostly cloudy.

Precipitation (in)

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

Snow Level (ft)

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

5000' Temperatures (°F)

Tuesday Tuesday Night
Max / Min Max / Min
Olympics 43 / 35 41 / 35
West North 37 / 27 37 / 32
West Central 37 / 27 36 / 31
West South 39 / 30 38 / 32
Stevens Pass 36 / 25 33 / 28
Snoqualmie Pass 38 / 26 35 / 29
East North 34 / 17 30 / 25
East Central 36 / 19 34 / 28
East South 38 / 22 35 / 29
Mt. Hood 38 / 25 41 / 33
Olympics 5000' Temperature Forecast
(Max / Min)
Tuesday 43 / 35
Tuesday Night 41 / 35
West North 5000' Temperature Forecast
(Max / Min)
Tuesday 37 / 27
Tuesday Night 37 / 32
West Central 5000' Temperature Forecast
(Max / Min)
Tuesday 37 / 27
Tuesday Night 36 / 31
West South 5000' Temperature Forecast
(Max / Min)
Tuesday 39 / 30
Tuesday Night 38 / 32
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Tuesday 36 / 25
Tuesday Night 33 / 28
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Tuesday 38 / 26
Tuesday Night 35 / 29
East North 5000' Temperature Forecast
(Max / Min)
Tuesday 34 / 17
Tuesday Night 30 / 25
East Central 5000' Temperature Forecast
(Max / Min)
Tuesday 36 / 19
Tuesday Night 34 / 28
East South 5000' Temperature Forecast
(Max / Min)
Tuesday 38 / 22
Tuesday Night 35 / 29
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Tuesday 38 / 25
Tuesday Night 41 / 33

Ridgeline Winds (mph)

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

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

Previous forecast from Jan 24, 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’.