Issued: 2:10 PM PST Sunday, December 7, 2025
by Robert Hahn

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

Weather Synopsis

A multi-day atmospheric river event will unfold through the work week. While models indicate broad agreement on the magnitude of the event, subtle fluctuations in snow level and the aim of the firehose will determine how this event goes down in the record books and snowpack gain/loss category.

Brisk upper-level W winds will maintain moderate to locally strong WSW winds across the region Sunday night, with enough moisture to continue light rain and higher-elevation snow shower activity. With low-level flow switching back westerly Sunday afternoon, the passes won't be able to look forward to more surprise wet snowfall.

The main event of the atmospheric river reaches the coast in the early morning hours on Monday, pushing inland as the morning progresses. This will spread rapidly increasing precipitation throughout the region which will become heavy in the 7-10 AM time frame and very heavy through the remainder of the day. Snow levels rise to 6000-8000 ft by the afternoon as moderate to strong winds increase. It will be a miserable day on both sides of the Cascades as plenty of moisture spills over the Cascade Crest.

Peak warming likely occurs in the early evening hours before a cold frontal system drops southward, bringing cooling and rapidly decreasing precipitation from north to south on Monday night. This cooling lasts through the day on Tuesday. Elevations above around 5,000 ft from Mt Rainier northward could pick up 6" or more of snow with the cooling while the southern Cascades continue to experience heavy precipitation and only minor reductions in snow level.

 

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
Sunday Night Light rain and snow showers. Moderate ridgeline winds.
Monday Moderate rain and snow to start, becoming heavy with rising snow levels. Moderate ridgeline winds.
Sunday Night Light rain and snow showers.
Monday Moderate rain and snow to start, becoming very heavy with rising snow levels. Moderate ridgeline winds.
Sunday Night Light rain and snow showers. Decreasing moderate ridgeline winds.
Monday Moderate rain and snow to start, becoming very heavy with rising snow levels. Moderate ridgeline winds.
Sunday Night Light rain and snow showers. Decreasing moderate ridgeline winds.
Monday Moderate rain and snow to start, becoming vert heavy with rising snow levels. Moderate ridgeline winds.
Sunday Night Light rain and snow showers. Moderate ridgeline and light W wind at the Pass.
Monday Moderate rain and snow to start, becoming very heavy with rising snow levels. Moderate ridgeline and light to moderate W wind at the Pass.
Sunday Night Mostly light rain and snow showers. Moderate ridgeline and light to moderate W wind at the Pass.
Monday Moderate rain and snow to start, becoming very heavy with rising snow levels. Moderate ridgeline and light to moderate W wind at the Pass.
Sunday Night Decreasing light snow showers. Moderate ridgeline winds, strong gusts.
Monday Increasing moderate snow in the morning, becoming heavy in the afternoon and mixing with rain at lower elevations. Moderate ridgeline winds.
Sunday Night Light rain or snow showers. Moderate to occasionally strong ridgeline winds.
Monday Increasing moderate rain and snow in the morning, becoming heavy in the afternoon as snow levels rise. Moderate to strong ridgeline winds.
Sunday Night Light rain or snow showers. Moderate to occasionally strong ridgeline winds.
Monday Increasing moderate rain and snow in the morning, becoming heavy in the afternoon as snow levels rise. Moderate to strong ridgeline winds.
Sunday Night Light to moderate rain and snow. Moderate to strong ridgeline winds.
Monday Increasing very heavy rain and snow. Strong ridgeline winds. Rising snow levels.

Issued: 2:10 PM PST Sunday, December 7, 2025

Precipitation (in)

Sunday Night Monday Monday Night Tuesday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 1.00 0.75 LT 0.10
Mt Baker Ski Area 0.25 - 0.50 1.50 1.50 LT 0.10
Mt. Loop - Barlow Pass 0.25 1.50 2.00 - 2.50 LT 0.10
Stevens Pass 0.25 1.50 2.50 - 3.50 LT 0.25
Snoqualmie Pass 0.25 2.00 3.00 - 4.00 0.25 - 0.50
Crystal Mt LT 0.10 0.75 1.00 - 1.50 0.50
Paradise LT 0.25 2.50 3.00 - 4.00 1.00 - 1.50
White Pass LT 0.10 1.00 - 1.50 2.00 0.75
Washington Pass 0.25 1.00 - 1.50 1.50 LT 0.10
Mission Ridge LT 0.10 0.50 - 0.75 1.00 - 1.50 LT 0.25
Salmon la Sac - Gallagher Head LT 0.25 1.00 - 1.50 2.00 - 2.50 0.25
Tieton River - Darland Mt. LT 0.10 0.75 1.00 - 1.50 0.50 - 0.75
Mt Hood Meadows LT 0.25 1.00 - 1.50 1.50 - 2.00 2.00
Timberline 0.25 1.00 - 1.50 1.50 - 2.00 2.00
Hurricane Ridge Precipitation (in)
Sunday Night LT 0.10
Monday 1.00
Monday Night 0.75
Tuesday LT 0.10
Mt Baker Ski Area Precipitation (in)
Sunday Night 0.25 - 0.50
Monday 1.50
Monday Night 1.50
Tuesday LT 0.10
Mt. Loop - Barlow Pass Precipitation (in)
Sunday Night 0.25
Monday 1.50
Monday Night 2.00 - 2.50
Tuesday LT 0.10
Stevens Pass Precipitation (in)
Sunday Night 0.25
Monday 1.50
Monday Night 2.50 - 3.50
Tuesday LT 0.25
Snoqualmie Pass Precipitation (in)
Sunday Night 0.25
Monday 2.00
Monday Night 3.00 - 4.00
Tuesday 0.25 - 0.50
Crystal Mt Precipitation (in)
Sunday Night LT 0.10
Monday 0.75
Monday Night 1.00 - 1.50
Tuesday 0.50
Paradise Precipitation (in)
Sunday Night LT 0.25
Monday 2.50
Monday Night 3.00 - 4.00
Tuesday 1.00 - 1.50
White Pass Precipitation (in)
Sunday Night LT 0.10
Monday 1.00 - 1.50
Monday Night 2.00
Tuesday 0.75
Washington Pass Precipitation (in)
Sunday Night 0.25
Monday 1.00 - 1.50
Monday Night 1.50
Tuesday LT 0.10
Mission Ridge Precipitation (in)
Sunday Night LT 0.10
Monday 0.50 - 0.75
Monday Night 1.00 - 1.50
Tuesday LT 0.25
Salmon la Sac - Gallagher Head Precipitation (in)
Sunday Night LT 0.25
Monday 1.00 - 1.50
Monday Night 2.00 - 2.50
Tuesday 0.25
Tieton River - Darland Mt. Precipitation (in)
Sunday Night LT 0.10
Monday 0.75
Monday Night 1.00 - 1.50
Tuesday 0.50 - 0.75
Mt Hood Meadows Precipitation (in)
Sunday Night LT 0.25
Monday 1.00 - 1.50
Monday Night 1.50 - 2.00
Tuesday 2.00
Timberline Precipitation (in)
Sunday Night 0.25
Monday 1.00 - 1.50
Monday Night 1.50 - 2.00
Tuesday 2.00

Issued: 2:10 PM PST Sunday, December 7, 2025

Snow Level (ft)

Sunday Evening Sunday Night Monday Morning Monday Afternoon Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 4500' 4500' 4500' 7000' 7500' 5500' 4000' 4500'
West North 4000' 3500' 4000' 6000' 6500' 5000' 3500' 3500'
West Central 4500' 4500' 4500' 6500' 7000' 5500' 3500' 3500'
West South 5000' 5000' 5000' 7000' 7500' 7000' 4000' 4000'
Stevens Pass 4500' 4500' 4500' 6000' 7000' 6000' 3500' 3500'
Snoqualmie Pass 5000' 4500' 5000' 7000' 8500' 6500' 3500' 3500'
East North 2000' 2000' 2000' 5000' 5500' 5000' 2500' 3500'
East Central 5000' 4500' 5000' 7000' 7500' 7000' 4000' 4500'
East South 5500' 4500' 5500' 7500' 8000' 7500' 5000' 5000'
Mt. Hood 6000' 6000' 6000' 8000' 8500' 9000' 7500' 8000'
Olympics Elevation
Sunday Evening 4500'
Sunday Night 4500'
Monday Morning 4500'
Monday Afternoon 7000'
Monday Evening 7500'
Monday Night 5500'
Tuesday Morning 4000'
Tuesday Afternoon 4500'
West North Elevation
Sunday Evening 4000'
Sunday Night 3500'
Monday Morning 4000'
Monday Afternoon 6000'
Monday Evening 6500'
Monday Night 5000'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
West Central Elevation
Sunday Evening 4500'
Sunday Night 4500'
Monday Morning 4500'
Monday Afternoon 6500'
Monday Evening 7000'
Monday Night 5500'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
West South Elevation
Sunday Evening 5000'
Sunday Night 5000'
Monday Morning 5000'
Monday Afternoon 7000'
Monday Evening 7500'
Monday Night 7000'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
Stevens Pass Elevation
Sunday Evening 4500'
Sunday Night 4500'
Monday Morning 4500'
Monday Afternoon 6000'
Monday Evening 7000'
Monday Night 6000'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
Snoqualmie Pass Elevation
Sunday Evening 5000'
Sunday Night 4500'
Monday Morning 5000'
Monday Afternoon 7000'
Monday Evening 8500'
Monday Night 6500'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
East North Elevation
Sunday Evening 2000'
Sunday Night 2000'
Monday Morning 2000'
Monday Afternoon 5000'
Monday Evening 5500'
Monday Night 5000'
Tuesday Morning 2500'
Tuesday Afternoon 3500'
East Central Elevation
Sunday Evening 5000'
Sunday Night 4500'
Monday Morning 5000'
Monday Afternoon 7000'
Monday Evening 7500'
Monday Night 7000'
Tuesday Morning 4000'
Tuesday Afternoon 4500'
East South Elevation
Sunday Evening 5500'
Sunday Night 4500'
Monday Morning 5500'
Monday Afternoon 7500'
Monday Evening 8000'
Monday Night 7500'
Tuesday Morning 5000'
Tuesday Afternoon 5000'
Mt. Hood Elevation
Sunday Evening 6000'
Sunday Night 6000'
Monday Morning 6000'
Monday Afternoon 8000'
Monday Evening 8500'
Monday Night 9000'
Tuesday Morning 7500'
Tuesday Afternoon 8000'

Issued: 2:10 PM PST Sunday, December 7, 2025

5000' Temperatures (°F)

Sunday Night Monday
Max / Min Max / Min
Olympics 33 / 30 41 / 33
West North 32 / 30 39 / 31
West Central 33 / 31 41 / 33
West South 34 / 32 41 / 33
Stevens Pass 34 / 32 40 / 33
Snoqualmie Pass 34 / 32 41 / 34
East North 33 / 29 38 / 29
East Central 33 / 31 40 / 33
East South 34 / 32 41 / 34
Mt. Hood 37 / 35 43 / 38
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday Night 33 / 30
Monday 41 / 33
West North 5000' Temperature Forecast
(Max / Min)
Sunday Night 32 / 30
Monday 39 / 31
West Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 33 / 31
Monday 41 / 33
West South 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 32
Monday 41 / 33
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 32
Monday 40 / 33
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 32
Monday 41 / 34
East North 5000' Temperature Forecast
(Max / Min)
Sunday Night 33 / 29
Monday 38 / 29
East Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 33 / 31
Monday 40 / 33
East South 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 32
Monday 41 / 34
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday Night 37 / 35
Monday 43 / 38

Issued: 2:10 PM PST Sunday, December 7, 2025

Ridgeline Winds (mph)

Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics WSW 10-20 WSW 10-20 SW 15-25 WSW 20-30
West North WSW 15-25 WSW 10-20 SSW 20-30 SSW 20-30
West Central WSW 20-30 WSW 15-25 SW 15-25 SW 20-30
West South WSW 20-30 WSW 15-25 WSW 20-30 WSW 25-35
Stevens Pass W 20-30 W 20-30 WSW 15-25 WSW 15-25
Snoqualmie Pass W 25-35 W 20-30 W 15-25 WSW 25-35
East North W 20-30 WSW 20-30 WSW 15-25 SW 20-30
East Central W 25-35 W 20-30 WSW 15-25 WSW 20-30
East South W 20-30 W 15-25 WSW 15-25 WSW 20-30
Mt. Hood W 30-40 WSW 25-35 WSW 25-35 WSW 30-40
Olympics Ridgeline Winds (mph)
Sunday Evening WSW 10-20
Sunday Night WSW 10-20
Monday Morning SW 15-25
Monday Afternoon WSW 20-30
West North Ridgeline Winds (mph)
Sunday Evening WSW 15-25
Sunday Night WSW 10-20
Monday Morning SSW 20-30
Monday Afternoon SSW 20-30
West Central Ridgeline Winds (mph)
Sunday Evening WSW 20-30
Sunday Night WSW 15-25
Monday Morning SW 15-25
Monday Afternoon SW 20-30
West South Ridgeline Winds (mph)
Sunday Evening WSW 20-30
Sunday Night WSW 15-25
Monday Morning WSW 20-30
Monday Afternoon WSW 25-35
Stevens Pass Ridgeline Winds (mph)
Sunday Evening W 20-30
Sunday Night W 20-30
Monday Morning WSW 15-25
Monday Afternoon WSW 15-25
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Evening W 25-35
Sunday Night W 20-30
Monday Morning W 15-25
Monday Afternoon WSW 25-35
East North Ridgeline Winds (mph)
Sunday Evening W 20-30
Sunday Night WSW 20-30
Monday Morning WSW 15-25
Monday Afternoon SW 20-30
East Central Ridgeline Winds (mph)
Sunday Evening W 25-35
Sunday Night W 20-30
Monday Morning WSW 15-25
Monday Afternoon WSW 20-30
East South Ridgeline Winds (mph)
Sunday Evening W 20-30
Sunday Night W 15-25
Monday Morning WSW 15-25
Monday Afternoon WSW 20-30
Mt. Hood Ridgeline Winds (mph)
Sunday Evening W 30-40
Sunday Night WSW 25-35
Monday Morning WSW 25-35
Monday Afternoon WSW 30-40

Issued: 2:10 PM PST Sunday, December 7, 2025

Extended Weather Synopsis

The long-duration atmospheric river continues...

Another wave approaches Tuesday night, bringing another round of rising snow levels and moisture.  The northernmost Cascades likely avoid the worst of the warming and continue to receive some middle-elevation snowfall. In contrast, the central and southern Cascades get more heavy rainfall through Wednesday night. The precipitation begins to ease on Thursday.

Extended Snow Level (ft)

Tuesday Night Wednesday Wednesday Night Thursday
West North 4500' 4500' 4500' 4500'
Snoqualmie Pass 5500' 6500' 6000' 6000'
Mt. Hood 8500' 9000' 8500' 8500'
West North Elevation
Tuesday Night 4500'
Wednesday 4500'
Wednesday Night 4500'
Thursday 4500'
Snoqualmie Pass Elevation
Tuesday Night 5500'
Wednesday 6500'
Wednesday Night 6000'
Thursday 6000'
Mt. Hood Elevation
Tuesday Night 8500'
Wednesday 9000'
Wednesday Night 8500'
Thursday 8500'

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

Previous forecast from Dec 7, 2025

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’.