Issued: 7:02 AM PST Monday, January 22, 2024
by Robert Hahn

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

Weather Synopsis

The final in a series of surface lows linked to an offshore trough will transit the area today. Each low has been better developed and more moisture-laden than the previous, giving the current feature over SW Washington ample moisture to work with. The low should track NE through the central Cascades during the late morning hours. Moderate low-level E winds through the mountain gaps have been keeping much of the precipitation east of the Cascades frozen. These winds should relax somewhat as upper-level winds increase out of the WSW in the wake of the passing low. Expect increasing increasing moderate to locally heavy rain and snow for the west slopes of the Cascades today with snow changing to a wintry mix for the passes and light to moderate snow or wintry mix east of the Cascade Crest.

The trailing upper trough approaches the coast overnight with decreasing light to moderate rain and snow showers for the west slopes of the Cascades and passes. The minimal spillover to the east slopes will be a rain/snow mix as temperatures continue to warm east of the Crest.

Light rain and snow showers continue to decrease on Tuesday with the trough axis moving east during the morning area and a weak ridge bringing increasing chances for a few sun breaks in the afternoon.

Snow levels west of the Cascades will be in the 4000-5000 ft range throughout the period. East of the Cascades, snow levels rise up to around 3500-4500 ft by Tuesday.

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
Monday Cloudy with periods of light rain and snow. Light ridgeline winds.
Monday Night Cloudy with decreasing periods of light rain and snow. Light ridgeline winds.
Monday Cloudy with moderate rain and snow becoming locally heavy under convergence late in the day. Increasing light to moderate ridgeline winds.
Monday Night Cloudy with moderate rain and snow showers early, becoming light. Light ridgeline winds.
Monday Cloudy with periods of moderate rain and snow. Increasing light to moderate ridgeline winds.
Monday Night Cloudy with moderate rain and snow showers early, becoming light. Decreasing light to moderate ridgeline winds.
Monday Cloudy with heavy rain and snow (Paradise) and light rain and snow (White Pass). Increasing light to moderate ridgeline winds.
Monday Night Cloudy with periods of moderate rain and snow (Paradise) and light rain and snow (White Pass). Decreasing mostly light ridgeline winds.
Monday Cloudy with periods of moderate rain and snow. Mostly light ridgeline and E wind at the Pass.
Monday Night Cloudy with periods of moderate rain and snow. Light to occasionally moderate ridgeline and variable wind at the Pass.
Monday Cloudy with moderate rain and snow in the morning, becoming heavy at times in the afternoon. Snow should transition to rain or a wintry mix during the afternoon. Mostly light ridgeline and E wind at the Pass.
Monday Night Cloudy with periods of moderate rain and snow. Light to occasionally moderate ridgeline and variable wind at the Pass.
Monday Cloudy with periods of light snow. Increasing light ridgeline winds.
Monday Night Cloudy with decreasing light rain or snow showers. Decreasing light to moderate ridgeline winds.
Monday Cloudy with periods of light to moderate rain, snow, and wintry mix. Increasing moderate ridgeline winds.
Monday Night Cloudy with decreasing light rain or snow showers. Decreasing moderate ridgeline winds.
Monday Cloudy with periods of light rain, snow, or freezing rain. Increasing light to moderate ridgeline winds.
Monday Night Cloudy with decreasing light rain or snow showers. Decreasing light to moderate ridgeline winds.
Monday Cloudy with periods of moderate rain and snow. Increasing moderate ridgeline winds with strong gusts.
Monday Night Cloudy with moderate rain and snow showers. Light to moderate ridgeline winds.

Issued: 7:02 AM PST Monday, January 22, 2024

Precipitation (in)

Monday Monday Night Tuesday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 LT 0.10 LT 0.10
Mt Baker Ski Area 0.75 0.25 - 0.50 0.25 - 0.50
Mt. Loop - Barlow Pass 0.75 0.25 - 0.50 0.25
Stevens Pass 0.25 - 0.50 0.25 0.25
Snoqualmie Pass 0.75 0.25 - 0.50 0.25
Crystal Mt 0.25 LT 0.10 LT 0.10
Paradise 0.75 -1.00 0.25 - 0.50 0.25
White Pass 0.25 LT 0.25 LT 0.25
Washington Pass 0.25 LT 0.25 LT 0.10
Mission Ridge 0.25 LT 0.10 LT 0.10
Salmon la Sac - Gallagher Head 0.25 - 0.50 0.25 LT 0.25
Tieton River - Darland Mt. 0.25 LT 0.25 LT 0.10
Mt Hood Meadows 0.25 - 0.50 0.25 - 0.50 LT 0.25
Timberline 0.50 0.50 LT 0.25
Hurricane Ridge Precipitation (in)
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
Mt Baker Ski Area Precipitation (in)
Monday 0.75
Monday Night 0.25 - 0.50
Tuesday 0.25 - 0.50
Mt. Loop - Barlow Pass Precipitation (in)
Monday 0.75
Monday Night 0.25 - 0.50
Tuesday 0.25
Stevens Pass Precipitation (in)
Monday 0.25 - 0.50
Monday Night 0.25
Tuesday 0.25
Snoqualmie Pass Precipitation (in)
Monday 0.75
Monday Night 0.25 - 0.50
Tuesday 0.25
Crystal Mt Precipitation (in)
Monday 0.25
Monday Night LT 0.10
Tuesday LT 0.10
Paradise Precipitation (in)
Monday 0.75 -1.00
Monday Night 0.25 - 0.50
Tuesday 0.25
White Pass Precipitation (in)
Monday 0.25
Monday Night LT 0.25
Tuesday LT 0.25
Washington Pass Precipitation (in)
Monday 0.25
Monday Night LT 0.25
Tuesday LT 0.10
Mission Ridge Precipitation (in)
Monday 0.25
Monday Night LT 0.10
Tuesday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Monday 0.25 - 0.50
Monday Night 0.25
Tuesday LT 0.25
Tieton River - Darland Mt. Precipitation (in)
Monday 0.25
Monday Night LT 0.25
Tuesday LT 0.10
Mt Hood Meadows Precipitation (in)
Monday 0.25 - 0.50
Monday Night 0.25 - 0.50
Tuesday LT 0.25
Timberline Precipitation (in)
Monday 0.50
Monday Night 0.50
Tuesday LT 0.25

Issued: 7:02 AM PST Monday, January 22, 2024

Snow Level (ft)

Monday Morning* Monday Afternoon* Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 5000' 5000' 5000' 4500' 5000' 4000'
West North 4500' 4500' 4500' 4000' 4000' 4000'
West Central 5000' 5000' 4500' 4500' 4500' 4500'
West South 5000' 5000' 4500' 4500' 4500' 4500'
Stevens Pass 3000' 3500' 4000' 4500' 4000' 4500'
Snoqualmie Pass 3000' 3500' 4000' 4500' 4500' 4500'
East North 2000' 3000' 3500' 4000' 4000' 4500'
East Central 3000' 3500' 4000' 4000' 4000' 4500'
East South 4000' 4500' 4500' 4500' 4500' 4500'
Mt. Hood 5500' 5000' 5500' 5000' 5000' 4500'
Olympics Elevation
Monday Morning* 5000'
Monday Afternoon* 5000'
Monday Evening 5000'
Monday Night 4500'
Tuesday Morning 5000'
Tuesday Afternoon 4000'
West North Elevation
Monday Morning* 4500'
Monday Afternoon* 4500'
Monday Evening 4500'
Monday Night 4000'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
West Central Elevation
Monday Morning* 5000'
Monday Afternoon* 5000'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
West South Elevation
Monday Morning* 5000'
Monday Afternoon* 5000'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
Stevens Pass Elevation
Monday Morning* 3000'
Monday Afternoon* 3500'
Monday Evening 4000'
Monday Night 4500'
Tuesday Morning 4000'
Tuesday Afternoon 4500'
Snoqualmie Pass Elevation
Monday Morning* 3000'
Monday Afternoon* 3500'
Monday Evening 4000'
Monday Night 4500'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
East North Elevation
Monday Morning* 2000'
Monday Afternoon* 3000'
Monday Evening 3500'
Monday Night 4000'
Tuesday Morning 4000'
Tuesday Afternoon 4500'
East Central Elevation
Monday Morning* 3000'
Monday Afternoon* 3500'
Monday Evening 4000'
Monday Night 4000'
Tuesday Morning 4000'
Tuesday Afternoon 4500'
East South Elevation
Monday Morning* 4000'
Monday Afternoon* 4500'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
Mt. Hood Elevation
Monday Morning* 5500'
Monday Afternoon* 5000'
Monday Evening 5500'
Monday Night 5000'
Tuesday Morning 5000'
Tuesday Afternoon 4500'

Issued: 7:02 AM PST Monday, January 22, 2024

5000' Temperatures (°F)

Monday Monday Night
Max / Min Max / Min
Olympics 35 / 32 33 / 32
West North 33 / 30 31 / 30
West Central 32 / 29 33 / 31
West South 33 / 32 32 / 31
Stevens Pass 33 / 29 33 / 32
Snoqualmie Pass 32 / 29 32 / 31
East North 31 / 28 31 / 29
East Central 32 / 29 32 / 31
East South 34 / 30 33 / 31
Mt. Hood 34 / 33 34 / 32
Olympics 5000' Temperature Forecast
(Max / Min)
Monday 35 / 32
Monday Night 33 / 32
West North 5000' Temperature Forecast
(Max / Min)
Monday 33 / 30
Monday Night 31 / 30
West Central 5000' Temperature Forecast
(Max / Min)
Monday 32 / 29
Monday Night 33 / 31
West South 5000' Temperature Forecast
(Max / Min)
Monday 33 / 32
Monday Night 32 / 31
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday 33 / 29
Monday Night 33 / 32
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday 32 / 29
Monday Night 32 / 31
East North 5000' Temperature Forecast
(Max / Min)
Monday 31 / 28
Monday Night 31 / 29
East Central 5000' Temperature Forecast
(Max / Min)
Monday 32 / 29
Monday Night 32 / 31
East South 5000' Temperature Forecast
(Max / Min)
Monday 34 / 30
Monday Night 33 / 31
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday 34 / 33
Monday Night 34 / 32

Issued: 7:02 AM PST Monday, January 22, 2024

Ridgeline Winds (mph)

Monday Morning Monday Afternoon Monday Evening Monday Night
Olympics S 5-15 SW 10-20 SW 10-20 SW 5-15
West North SSE 10-20 S 10-20 SW 10-20 SW 5-15
West Central SE 10-20 S 10-20 SW 15-25 SW 10-20
West South SSW 10-20 SW 15-25 WSW 5-15 WSW 5-15
Stevens Pass SSE 10-20 SSW 10-20 WSW 10-20 WSW 5-15
Snoqualmie Pass SE 10-20 SSW 10-20 WSW 10-20 WSW 5-15
East North SE 10-20 S 5-15 WSW 10-20 WSW 10-20
East Central S 10-20 SW 15-25 WSW 20-30 W 10-20
East South SSW 5-15 WSW 10-20 WSW 10-20 WSW 5-15
Mt. Hood SW 20-30 WSW 20-30 WSW 10-20 WSW 10-20
Olympics Ridgeline Winds (mph)
Monday Morning S 5-15
Monday Afternoon SW 10-20
Monday Evening SW 10-20
Monday Night SW 5-15
West North Ridgeline Winds (mph)
Monday Morning SSE 10-20
Monday Afternoon S 10-20
Monday Evening SW 10-20
Monday Night SW 5-15
West Central Ridgeline Winds (mph)
Monday Morning SE 10-20
Monday Afternoon S 10-20
Monday Evening SW 15-25
Monday Night SW 10-20
West South Ridgeline Winds (mph)
Monday Morning SSW 10-20
Monday Afternoon SW 15-25
Monday Evening WSW 5-15
Monday Night WSW 5-15
Stevens Pass Ridgeline Winds (mph)
Monday Morning SSE 10-20
Monday Afternoon SSW 10-20
Monday Evening WSW 10-20
Monday Night WSW 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Monday Morning SE 10-20
Monday Afternoon SSW 10-20
Monday Evening WSW 10-20
Monday Night WSW 5-15
East North Ridgeline Winds (mph)
Monday Morning SE 10-20
Monday Afternoon S 5-15
Monday Evening WSW 10-20
Monday Night WSW 10-20
East Central Ridgeline Winds (mph)
Monday Morning S 10-20
Monday Afternoon SW 15-25
Monday Evening WSW 20-30
Monday Night W 10-20
East South Ridgeline Winds (mph)
Monday Morning SSW 5-15
Monday Afternoon WSW 10-20
Monday Evening WSW 10-20
Monday Night WSW 5-15
Mt. Hood Ridgeline Winds (mph)
Monday Morning SW 20-30
Monday Afternoon WSW 20-30
Monday Evening WSW 10-20
Monday Night WSW 10-20

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

Previous forecast from Jan 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.

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’.