Issued: 7:07 AM PST Tuesday, January 24, 2023
by Robert Hahn

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

Weather Synopsis

A weak perturbation sliding down the backside of a persistent offshore ridge will bring light rain and snow to the central and northern Cascades today. The light rain and snow should increase from Mt. Baker to Snoqualmie Pass through mid-afternoon before gradually tapering through the evening hours. The ridge continues to expand into the region, moderating the temperatures as it does. Snow levels should rise from around 2500 ft Tuesday morning to 3500 ft by the end of the day and perhaps around 4000 ft by the time the rain and snow ends overnight.

Clearing skies in the wake of the perturbation will help form a shallow inversion in some areas into early Wednesday. However, the expanding ridge will raise freezing levels to above Cascade Crest level by Wednesday afternoon with mountain temperatures in the 30s and low 40s with low relative humidity. The scattered low clouds lingering along the west slopes of the Washington Cascades in the morning give way to mostly sunny skies by the afternoon.

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 cloudy with a slight chance of very light rain or snow.
Tuesday Night Partly cloudy early with mostly clearing skies overnight.
Tuesday Cloudy with periods of increasing light rain or snow.
Tuesday Night Very light rain or snow decreasing or ending.
Tuesday Light rain and snow.
Tuesday Night Decreasing light rain or snow ending overnight.
Tuesday Cloudy in the northern part with a slight chance of rain or snow around Crystal Mountain. Partly cloudy skies in the southern part.
Tuesday Night Cloudier skies in the north with more clearing to the south.
Tuesday Periods of light rain and snow. Light to moderate ridgeline and light W wind at the Pass.
Tuesday Night Light rain or snow ending during the evening hours. Light to moderate ridgeline and light W wind at the Pass.
Tuesday Periods of light rain and snow. Moderate ridgeline and light W wind at the Pass.
Tuesday Night Light rain or snow ending during the evening hours. Moderate ridgeline and light W wind at the Pass.
Tuesday Increasing light rain and snow. Slightly increasing moderate ridgeline winds.
Tuesday Night Mostly cloudy with a chance of flurries in the evening. Gradually decreasing moderate ridgeline winds.
Tuesday Mostly cloudy. Gradually increasing moderate ridgeline winds.
Tuesday Night Decreasing clouds. Gradually decreasing moderate ridgeline winds.
Tuesday Partly cloudy.
Tuesday Night Partly cloudy in the evening, then mostly clearing skies.
Tuesday Mostly sunny. Moderate to strong ridgeline winds decreasing slightly in the afternoon.
Tuesday Night Mostly clear. Moderate ridgeline winds.

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 LT 0.25 0 0
Mt. Loop - Barlow Pass LT 0.10 LT 0.10 0
Stevens Pass LT 0.10 LT 0.10 0
Snoqualmie Pass LT 0.10 LT 0.10 0
Crystal Mt LT 0.10 0 0
Paradise 0 0 0
White Pass 0 0 0
Washington Pass LT 0.10 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 LT 0.25
Tuesday Night 0
Wednesday 0
Mt. Loop - Barlow Pass Precipitation (in)
Tuesday LT 0.10
Tuesday Night LT 0.10
Wednesday 0
Stevens Pass Precipitation (in)
Tuesday LT 0.10
Tuesday Night LT 0.10
Wednesday 0
Snoqualmie Pass Precipitation (in)
Tuesday LT 0.10
Tuesday Night LT 0.10
Wednesday 0
Crystal Mt Precipitation (in)
Tuesday LT 0.10
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 LT 0.10
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 4500' 5500' 5500' 6000' 6000' 9500'
West North 2000' 3000' 3500' 3500' 3000' 7000'
West Central 2500' 3000' 3500' 3500' 3500' 7000'
West South 2500' 4000' 4000' 4000' 4500' 7500'
Stevens Pass 2000' 3000' 3500' 3500' 4000' 7000'
Snoqualmie Pass 2500' 3000' 3500' 4000' 4000' 7000'
East North 2000' 3500' 4000' 4000' 4000' 7000'
East Central 2000' 4000' 4000' 4000' 4500' 7000'
East South 3000' 4500' 4500' 4500' 4500' 7500'
Mt. Hood 4000' 5500' 5000' 4500' 6500' 8500'
Olympics Elevation
Tuesday Morning 4500'
Tuesday Afternoon 5500'
Tuesday Evening 5500'
Tuesday Night 6000'
Wednesday Morning 6000'
Wednesday Afternoon 9500'
West North Elevation
Tuesday Morning 2000'
Tuesday Afternoon 3000'
Tuesday Evening 3500'
Tuesday Night 3500'
Wednesday Morning 3000'
Wednesday Afternoon 7000'
West Central Elevation
Tuesday Morning 2500'
Tuesday Afternoon 3000'
Tuesday Evening 3500'
Tuesday Night 3500'
Wednesday Morning 3500'
Wednesday Afternoon 7000'
West South Elevation
Tuesday Morning 2500'
Tuesday Afternoon 4000'
Tuesday Evening 4000'
Tuesday Night 4000'
Wednesday Morning 4500'
Wednesday Afternoon 7500'
Stevens Pass Elevation
Tuesday Morning 2000'
Tuesday Afternoon 3000'
Tuesday Evening 3500'
Tuesday Night 3500'
Wednesday Morning 4000'
Wednesday Afternoon 7000'
Snoqualmie Pass Elevation
Tuesday Morning 2500'
Tuesday Afternoon 3000'
Tuesday Evening 3500'
Tuesday Night 4000'
Wednesday Morning 4000'
Wednesday Afternoon 7000'
East North Elevation
Tuesday Morning 2000'
Tuesday Afternoon 3500'
Tuesday Evening 4000'
Tuesday Night 4000'
Wednesday Morning 4000'
Wednesday Afternoon 7000'
East Central Elevation
Tuesday Morning 2000'
Tuesday Afternoon 4000'
Tuesday Evening 4000'
Tuesday Night 4000'
Wednesday Morning 4500'
Wednesday Afternoon 7000'
East South Elevation
Tuesday Morning 3000'
Tuesday Afternoon 4500'
Tuesday Evening 4500'
Tuesday Night 4500'
Wednesday Morning 4500'
Wednesday Afternoon 7500'
Mt. Hood Elevation
Tuesday Morning 4000'
Tuesday Afternoon 5500'
Tuesday Evening 5000'
Tuesday Night 4500'
Wednesday Morning 6500'
Wednesday Afternoon 8500'

5000' Temperatures (°F)

Tuesday Tuesday Night
Max / Min Max / Min
Olympics 34 / 29 31 / 28
West North 30 / 24 30 / 27
West Central 28 / 22 29 / 28
West South 32 / 23 30 / 27
Stevens Pass 28 / 23 29 / 28
Snoqualmie Pass 28 / 22 29 / 28
East North 32 / 24 29 / 28
East Central 31 / 25 30 / 29
East South 36 / 27 30 / 29
Mt. Hood 37 / 30 33 / 29
Olympics 5000' Temperature Forecast
(Max / Min)
Tuesday 34 / 29
Tuesday Night 31 / 28
West North 5000' Temperature Forecast
(Max / Min)
Tuesday 30 / 24
Tuesday Night 30 / 27
West Central 5000' Temperature Forecast
(Max / Min)
Tuesday 28 / 22
Tuesday Night 29 / 28
West South 5000' Temperature Forecast
(Max / Min)
Tuesday 32 / 23
Tuesday Night 30 / 27
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Tuesday 28 / 23
Tuesday Night 29 / 28
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Tuesday 28 / 22
Tuesday Night 29 / 28
East North 5000' Temperature Forecast
(Max / Min)
Tuesday 32 / 24
Tuesday Night 29 / 28
East Central 5000' Temperature Forecast
(Max / Min)
Tuesday 31 / 25
Tuesday Night 30 / 29
East South 5000' Temperature Forecast
(Max / Min)
Tuesday 36 / 27
Tuesday Night 30 / 29
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Tuesday 37 / 30
Tuesday Night 33 / 29

Ridgeline Winds (mph)

Tuesday Morning Tuesday Afternoon Tuesday Evening Tuesday Night
Olympics WNW 5-15 WNW 5-15 NW 5-15 NNW 5-15
West North W 10-20 WNW 15-25 WNW 10-20 WNW 5-15
West Central WNW 10-20 WNW 10-20 NW 15-25 WNW 10-20
West South WNW 10-20 WNW 5-15 NW 5-15 NW 5-15
Stevens Pass WNW 10-20 WNW 10-20 WNW 10-20 WNW 5-15
Snoqualmie Pass WNW 15-25 WNW 15-25 NW 15-25 WNW 10-20
East North WNW 15-25 WNW 20-30 WNW 15-25 WNW 10-20
East Central NW 15-25 WNW 15-25 NW 15-25 NW 15-25
East South NW 5-15 NW 10-20 NNW 15-25 NNW 15-25
Mt. Hood NW 20-30 NW 15-25 NNW 10-20 NNW 15-25
Olympics Ridgeline Winds (mph)
Tuesday Morning WNW 5-15
Tuesday Afternoon WNW 5-15
Tuesday Evening NW 5-15
Tuesday Night NNW 5-15
West North Ridgeline Winds (mph)
Tuesday Morning W 10-20
Tuesday Afternoon WNW 15-25
Tuesday Evening WNW 10-20
Tuesday Night WNW 5-15
West Central Ridgeline Winds (mph)
Tuesday Morning WNW 10-20
Tuesday Afternoon WNW 10-20
Tuesday Evening NW 15-25
Tuesday Night WNW 10-20
West South Ridgeline Winds (mph)
Tuesday Morning WNW 10-20
Tuesday Afternoon WNW 5-15
Tuesday Evening NW 5-15
Tuesday Night NW 5-15
Stevens Pass Ridgeline Winds (mph)
Tuesday Morning WNW 10-20
Tuesday Afternoon WNW 10-20
Tuesday Evening WNW 10-20
Tuesday Night WNW 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Tuesday Morning WNW 15-25
Tuesday Afternoon WNW 15-25
Tuesday Evening NW 15-25
Tuesday Night WNW 10-20
East North Ridgeline Winds (mph)
Tuesday Morning WNW 15-25
Tuesday Afternoon WNW 20-30
Tuesday Evening WNW 15-25
Tuesday Night WNW 10-20
East Central Ridgeline Winds (mph)
Tuesday Morning NW 15-25
Tuesday Afternoon WNW 15-25
Tuesday Evening NW 15-25
Tuesday Night NW 15-25
East South Ridgeline Winds (mph)
Tuesday Morning NW 5-15
Tuesday Afternoon NW 10-20
Tuesday Evening NNW 15-25
Tuesday Night NNW 15-25
Mt. Hood Ridgeline Winds (mph)
Tuesday Morning NW 20-30
Tuesday Afternoon NW 15-25
Tuesday Evening NNW 10-20
Tuesday Night NNW 15-25

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

Previous forecast from Jan 23, 2023

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