Issued: 1:59 PM PST Monday, November 25, 2024
by Dallas Glass

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

Weather Synopsis

After a long stretch of active weather, things will finally quiet down and slowly start to dry out over the next several days. While we can't fully rule out the chance of a few flurries in any 12-hour period, the general trend will be for less precipitation and a bit more sunshine. With the upper air flow turning more northerly, this will allow for colder and drier air to move into the region. 

A low-pressure system posed off the central Oregon coast will mozy southeasterly Monday night. As it does so, it will take with it most of the moisture responsible for all the recent rain and snow. Expect showers to linger along the western side of the Cascades and in the major passes through Tuesday morning. Most locations will at least start the day cloudy, but skies could begin to break. Your best chance for sunshine will be east of the Cascade crest. Leftover low-level moisture and weak on-shore flow should help keep the west-side locations a bit more socked in. 

Tuesday night appears to be the driest period in the short-term forecast. This could result in low clouds or valley fog forming. On Wednesday, upper air flow should turn more northwesterly and could manage to produce isolated very light showers near and west of the Cascade crest, particularly from about I90 northward. In other areas, a slight increase in mid to high level clouds and a subtle change in the wind direction will be the only impacts. 

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 Night Cloudy with isolated light snow showers. Precipitation heavies in the southern Olympics.
Tuesday Cloudy in the morning with a few flurries. Some sun breaks possible in the afternoon.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries. Some drying in the afternoon.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries. Some drying in the afternoon.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries. Some sun breaks possible, particularly in the afternoon.
Monday Night Cloudy with isolated light snow showers. Light easterly flow at pass level weakening.
Tuesday Cloudy in the morning with a few flurries. Westerly pass flow.
Monday Night Cloudy with isolated light snow showers. Light easterly flow at pass level weakening.
Tuesday Cloudy in the morning with a few flurries. WNW ridgetop winds becoming light to moderate.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries near the Cascade crest. Sun breaks likely in the afternoon. Light to moderate W ridgeline winds.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries near the Cascade crest. Sun breaks likely in the afternoon. Light to moderate WNW ridgeline winds.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries near the Cascade crest. Sun breaks likely in the afternoon. NW winds becoming light to moderate.
Monday Night Cloudy with isolated light snow showers.
Tuesday Cloudy in the morning with a few flurries. Sun breaks likely in the afternoon. NW winds becoming light to moderate.

Issued: 1:59 PM PST Monday, November 25, 2024

Precipitation (in)

Monday Night Tuesday Tuesday Night Wednesday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 0 0 0
Mt Baker Ski Area LT 0.10 LT 0.10 0 LT 0.10
Mt. Loop - Barlow Pass LT 0.10 LT 0.10 0 LT 0.10
Stevens Pass LT 0.10 LT 0.10 0 LT 0.10
Snoqualmie Pass LT 0.10 LT 0.10 0 LT 0.10
Crystal Mt LT 0.10 0 0 0
Paradise LT 0.10 LT 0.10 0 0
White Pass LT 0.10 0 0 0
Washington Pass LT 0.10 0 0 0
Mission Ridge 0 0 0 0
Salmon la Sac - Gallagher Head LT 0.10 0 0 0
Tieton River - Darland Mt. 0 0 0 0
Mt Hood Meadows LT 0.10 LT 0.10 LT 0.10 0
Timberline LT 0.10 LT 0.10 LT 0.10 0
Hurricane Ridge Precipitation (in)
Monday Night LT 0.10
Tuesday 0
Tuesday Night 0
Wednesday 0
Mt Baker Ski Area Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night 0
Wednesday LT 0.10
Mt. Loop - Barlow Pass Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night 0
Wednesday LT 0.10
Stevens Pass Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night 0
Wednesday LT 0.10
Snoqualmie Pass Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night 0
Wednesday LT 0.10
Crystal Mt Precipitation (in)
Monday Night LT 0.10
Tuesday 0
Tuesday Night 0
Wednesday 0
Paradise Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night 0
Wednesday 0
White Pass Precipitation (in)
Monday Night LT 0.10
Tuesday 0
Tuesday Night 0
Wednesday 0
Washington Pass Precipitation (in)
Monday Night LT 0.10
Tuesday 0
Tuesday Night 0
Wednesday 0
Mission Ridge Precipitation (in)
Monday Night 0
Tuesday 0
Tuesday Night 0
Wednesday 0
Salmon la Sac - Gallagher Head Precipitation (in)
Monday Night LT 0.10
Tuesday 0
Tuesday Night 0
Wednesday 0
Tieton River - Darland Mt. Precipitation (in)
Monday Night 0
Tuesday 0
Tuesday Night 0
Wednesday 0
Mt Hood Meadows Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night LT 0.10
Wednesday 0
Timberline Precipitation (in)
Monday Night LT 0.10
Tuesday LT 0.10
Tuesday Night LT 0.10
Wednesday 0

Issued: 1:59 PM PST Monday, November 25, 2024

Snow Level (ft)

Monday Evening* Monday Night Tuesday Morning Tuesday Afternoon Tuesday Evening Tuesday Night Wednesday Morning Wednesday Afternoon
Olympics 3500' 3000' 3500' 3500' 2500' 2000' 2000' 3000'
West North 3500' 3000' 3000' 3500' 2500' 2000' 2000' 2000'
West Central 3500' 3000' 3000' 3500' 2500' 2500' 2000' 2500'
West South 3500' 3000' 3000' 3500' 3000' 2500' 2000' 2500'
Stevens Pass 2500' 3000' 3000' 3500' 3000' 2500' 2000' 2500'
Snoqualmie Pass 3500' 3000' 3000' 3500' 3000' 3000' 2000' 2500'
East North 3500' 3000' 3000' 3000' 2000' 1500' 1500' 2000'
East Central 3500' 3000' 3500' 4000' 3000' 2500' 2000' 2500'
East South 3500' 3000' 3000' 4000' 3500' 3000' 2000' 2500'
Mt. Hood 4000' 3500' 4000' 4000' 3500' 3500' 3000' 4000'
Olympics Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
Tuesday Evening 2500'
Tuesday Night 2000'
Wednesday Morning 2000'
Wednesday Afternoon 3000'
West North Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
Tuesday Evening 2500'
Tuesday Night 2000'
Wednesday Morning 2000'
Wednesday Afternoon 2000'
West Central Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
Tuesday Evening 2500'
Tuesday Night 2500'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
West South Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
Tuesday Evening 3000'
Tuesday Night 2500'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
Stevens Pass Elevation
Monday Evening* 2500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
Tuesday Evening 3000'
Tuesday Night 2500'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
Snoqualmie Pass Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
Tuesday Evening 3000'
Tuesday Night 3000'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
East North Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3000'
Tuesday Evening 2000'
Tuesday Night 1500'
Wednesday Morning 1500'
Wednesday Afternoon 2000'
East Central Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3500'
Tuesday Afternoon 4000'
Tuesday Evening 3000'
Tuesday Night 2500'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
East South Elevation
Monday Evening* 3500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 4000'
Tuesday Evening 3500'
Tuesday Night 3000'
Wednesday Morning 2000'
Wednesday Afternoon 2500'
Mt. Hood Elevation
Monday Evening* 4000'
Monday Night 3500'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
Tuesday Evening 3500'
Tuesday Night 3500'
Wednesday Morning 3000'
Wednesday Afternoon 4000'

Issued: 1:59 PM PST Monday, November 25, 2024

5000' Temperatures (°F)

Monday Night Tuesday
Max / Min Max / Min
Olympics 29 / 25 29 / 23
West North 29 / 25 28 / 23
West Central 28 / 24 29 / 24
West South 29 / 20 29 / 23
Stevens Pass 28 / 24 28 / 24
Snoqualmie Pass 29 / 24 29 / 24
East North 26 / 20 27 / 21
East Central 28 / 22 28 / 22
East South 28 / 23 30 / 22
Mt. Hood 30 / 25 30 / 24
Olympics 5000' Temperature Forecast
(Max / Min)
Monday Night 29 / 25
Tuesday 29 / 23
West North 5000' Temperature Forecast
(Max / Min)
Monday Night 29 / 25
Tuesday 28 / 23
West Central 5000' Temperature Forecast
(Max / Min)
Monday Night 28 / 24
Tuesday 29 / 24
West South 5000' Temperature Forecast
(Max / Min)
Monday Night 29 / 20
Tuesday 29 / 23
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 28 / 24
Tuesday 28 / 24
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 29 / 24
Tuesday 29 / 24
East North 5000' Temperature Forecast
(Max / Min)
Monday Night 26 / 20
Tuesday 27 / 21
East Central 5000' Temperature Forecast
(Max / Min)
Monday Night 28 / 22
Tuesday 28 / 22
East South 5000' Temperature Forecast
(Max / Min)
Monday Night 28 / 23
Tuesday 30 / 22
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday Night 30 / 25
Tuesday 30 / 24

Issued: 1:59 PM PST Monday, November 25, 2024

Ridgeline Winds (mph)

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

Issued: 1:59 PM PST Monday, November 25, 2024

Extended Weather Synopsis

Generally, cold and dry conditions should stay with us Wednesday night and Thursday. At night, mostly clear skies could lead to low clouds and valley fog in some locations. For Thursday night into Friday, the weather models disagree substantially about what's next for the Pacific Northwest. Some solutions show a winter storm heading our direction, while others build a ridge over the region and keep us high and dry. We'll have to keep an eye on this to see which way the ball bounces. 

Extended Snow Level (ft)

Wednesday Night Thursday Thursday Night Friday
West North 1500' 2500' 2000' 3000'
Snoqualmie Pass 1500' 3000' 2000' 3000'
Mt. Hood 2500' 4500' 2000' 3500'
West North Elevation
Wednesday Night 1500'
Thursday 2500'
Thursday Night 2000'
Friday 3000'
Snoqualmie Pass Elevation
Wednesday Night 1500'
Thursday 3000'
Thursday Night 2000'
Friday 3000'
Mt. Hood Elevation
Wednesday Night 2500'
Thursday 4500'
Thursday Night 2000'
Friday 3500'

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

Previous forecast from Nov 24, 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’.