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Mountain Weather Forecast

Issued: 2:11 PM PST Saturday, November 30, 2024
by Robert Hahn

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather

Weather Synopsis for Saturday night through Monday

High pressure will bring mostly dry weather, ample sunshine, and a shift to above-freezing temperatures to upper elevations throughout the Pacific Northwest.

The ridge axis continues to pivot toward the Pacific Northwest coastline Saturday afternoon, with warming temperatures above any low-level inversions. The tail of a weak warm front approaching the Canadian Coastline continues to bring high clouds to the northern half of the forecast region. The few radar echoes mostly are not reaching the ground, but could touch off a trace of snow over the north Cascades during the evening hours.

Skies continue to clear Saturday night as freezing levels rise Saturday night, in many cases above 10,000 ft. Although these freezing level changes appear drastic, the relative humidity values are low. Therefore, these sharp temperature increases are unlikely to melt snow that isn't receiving strong, direct sunshine. Mostly light easterly flow developing Saturday night brings the initial warming more rapidly to the west slopes of the Cascade Crest and limits the development of inversions in these areas. By contrast, low-level inversions thicken to around 5000 ft east of the Cascades and through the mountain gaps.

By Sunday afternoon, most freezing levels will be in the 9,000-12,000 ft range, but do expect low-level inversions to create secondary freezing levels in the areas mentioned previously, with low clouds likely thickening as upper-level winds decrease.

Sunday night and Monday, the ridge remains squarely over the region with little change in the overall weather pattern.

Weather Forecast

Olympics
Saturday Night Mostly clear with some high clouds.
Mostly sunny and mild.
West North
Saturday Night Mostly cloudy with occasional very light snow in the evening hours, then gradually clearing.
Mostly sunny and mild.
West Central
Saturday Night Partly cloudy in the evening, then gradually clearing from south to north.
Mostly sunny and mild.
West South
Saturday Night Gradual clearing. Inversions strengthening in the valleys.
Mostly sunny and mild.
Stevens Pass
Saturday Night Partly cloudy in the evening, then clearing overnight. Light ridgeline and E wind at the Pass.
Mostly sunny and mild. Cooler temperatures below 5000 ft. Light to ridgeline and E wind at the Pass.
Snoqualmie Pass
Saturday Night Partly cloudy in the evening, then clearing overnight. Light ridgeline and E wind at the Pass.
Mostly sunny and mild. Cooler temperatures below 5000 ft. Light to occasionally moderate ridgeline and E wind at the Pass.
East North
Saturday Night Partly cloudy with a chance of light snow in the evening hours. Inversion strengthening.
Mostly sunny and cold to start. Moderating in the afternoon.
East Central
Saturday Night Mostly clear with some high clouds. Inversion strengthens and thickens.
Mostly sunny and warm with colder temperatures below 5000 ft.
East South
Saturday Night Mostly clear with some high clouds. Inversion strengthens and thickens.
Mostly sunny and warm with colder temperatures below 5000 ft.
Mt. Hood
Saturday Night Mostly clear. Mild.
Mostly sunny. Warm.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Saturday Evening Snow Level* None' None' None' None' 3000' 3000' None' 11000'
Saturday Night Snow Level* None' None' None' None' 3000' 3000' None' 11000'
Sunday Morning Snow Level* None' None' None' None' 10000' 10500' None' 11500'
Sunday Afternoon Snow Level* None' None' None' None' 10500' 10500' None' 11500'
Sunday Evening Snow Level* None' None' None' None' 11000' 11000' None' 11500'
Sunday Night Snow Level* None' None' None' None' 11500' 11500' None' 11500'
Monday Morning Snow Level* None' None' None' None' 11000' 11500' None' 11000'
Hurricane Ridge Elevation
Saturday Evening Snow Level
None'
(Easterly Flow *)
Saturday Night Snow Level
None'
(Easterly Flow *)
Sunday Morning Snow Level
None'
(Easterly Flow *)
Sunday Afternoon Snow Level
None'
(Easterly Flow *)
Sunday Evening Snow Level
None'
(Easterly Flow *)
Sunday Night Snow Level
None'
(Easterly Flow *)
Monday Morning Snow Level
None'
(Easterly Flow *)
Monday Afternoon Snow Level
None'
(Easterly Flow *)
Mt. Baker Elevation
Saturday Evening Snow Level
None'
(Easterly Flow *)
Saturday Night Snow Level
None'
(Easterly Flow *)
Sunday Morning Snow Level
None'
(Easterly Flow *)
Sunday Afternoon Snow Level
None'
(Easterly Flow *)
Sunday Evening Snow Level
None'
(Easterly Flow *)
Sunday Night Snow Level
None'
(Easterly Flow *)
Monday Morning Snow Level
None'
(Easterly Flow *)
Monday Afternoon Snow Level
None'
(Easterly Flow *)
Washington Pass Elevation
Saturday Evening Snow Level
None'
(Easterly Flow *)
Saturday Night Snow Level
None'
(Easterly Flow *)
Sunday Morning Snow Level
None'
(Easterly Flow *)
Sunday Afternoon Snow Level
None'
(Easterly Flow *)
Sunday Evening Snow Level
None'
(Easterly Flow *)
Sunday Night Snow Level
None'
(Easterly Flow *)
Monday Morning Snow Level
None'
(Easterly Flow *)
Monday Afternoon Snow Level
None'
(Easterly Flow *)
Leavenworth Elevation
Saturday Evening Snow Level
None'
(Easterly Flow *)
Saturday Night Snow Level
None'
(Easterly Flow *)
Sunday Morning Snow Level
None'
(Easterly Flow *)
Sunday Afternoon Snow Level
None'
(Easterly Flow *)
Sunday Evening Snow Level
None'
(Easterly Flow *)
Sunday Night Snow Level
None'
(Easterly Flow *)
Monday Morning Snow Level
None'
(Easterly Flow *)
Monday Afternoon Snow Level
None'
(Easterly Flow *)
Stevens Pass Elevation
Saturday Evening Snow Level
3000'
(Easterly Flow *)
Saturday Night Snow Level
3000'
(Easterly Flow *)
Sunday Morning Snow Level
10000'
(Easterly Flow *)
Sunday Afternoon Snow Level
10500'
(Easterly Flow *)
Sunday Evening Snow Level
11000'
(Easterly Flow *)
Sunday Night Snow Level
11500'
(Easterly Flow *)
Monday Morning Snow Level
11000'
(Easterly Flow *)
Monday Afternoon Snow Level
11500'
(Easterly Flow *)
Snoqualmie Pass Elevation
Saturday Evening Snow Level
3000'
(Easterly Flow *)
Saturday Night Snow Level
3000'
(Easterly Flow *)
Sunday Morning Snow Level
10500'
(Easterly Flow *)
Sunday Afternoon Snow Level
10500'
(Easterly Flow *)
Sunday Evening Snow Level
11000'
(Easterly Flow *)
Sunday Night Snow Level
11500'
(Easterly Flow *)
Monday Morning Snow Level
11500'
(Easterly Flow *)
Monday Afternoon Snow Level
11500'
(Easterly Flow *)
Mt. Rainier & Crystal Elevation
Saturday Evening Snow Level
None'
(Easterly Flow *)
Saturday Night Snow Level
None'
(Easterly Flow *)
Sunday Morning Snow Level
None'
(Easterly Flow *)
Sunday Afternoon Snow Level
None'
(Easterly Flow *)
Sunday Evening Snow Level
None'
(Easterly Flow *)
Sunday Night Snow Level
None'
(Easterly Flow *)
Monday Morning Snow Level
None'
(Easterly Flow *)
Monday Afternoon Snow Level
None'
(Easterly Flow *)
Mt. Hood Elevation
Saturday Evening Snow Level
11000'
(Easterly Flow *)
Saturday Night Snow Level
11000'
(Easterly Flow *)
Sunday Morning Snow Level
11500'
(Easterly Flow *)
Sunday Afternoon Snow Level
11500'
(Easterly Flow *)
Sunday Evening Snow Level
11500'
(Easterly Flow *)
Sunday Night Snow Level
11500'
(Easterly Flow *)
Monday Morning Snow Level
11000'
(Easterly Flow *)
Monday Afternoon Snow Level
11000'
(Easterly Flow *)

* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.

Precipitation Forecast

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

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Saturday Evening --- None - None --- None - None --- None - None --- None - None W None - None
Saturday Night --- None - None --- None - None --- None - None --- None - None SW None - None
Sunday Morning --- None - None --- None - None --- None - None --- None - None SSW None - None
Hurricane Ridge Elevation
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Baker Elevation
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Stevens and Snoqualmie Pass Elevation
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Rainier Elevation
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Hood Elevation
Saturday Evening W None - None
Saturday Night SW None - None
Sunday Morning SSW None - None
Sunday Afternoon SW None - None
Hurricane Ridge Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Baker Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Rainier Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Hood Direction - Speed
Saturday Evening W None - None
Saturday Night SW None - None
Sunday Morning SSW None - None
Sunday Afternoon SW None - None

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.

Free Winds at 9000' (mph)

Mt. Baker Washington Pass Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Saturday Evening --- None - None --- None - None --- None - None --- None - None --- None - None
Saturday Night --- None - None --- None - None --- None - None --- None - None --- None - None
Sunday Morning --- None - None --- None - None --- None - None --- None - None --- None - None
Mt. Baker Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Washington Pass Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Rainier Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None
Mt. Hood Direction - Speed
Saturday Evening --- None - None
Saturday Night --- None - None
Sunday Morning --- None - None
Sunday Afternoon --- None - None

Extended Weather Synopsis for Monday night through Wednesday

Monday night through Wednesday, the high pressure continues to fend off the storm track with little change in the very elevated freezing levels. By this point, some low-level inversions may be strong, particularly in snow-covered areas. Expect high clouds to increase by mid-week as the ridge begins to show signs of breaking down.

Extended Snow/Freezing Levels

Mt. Baker Snoqualmie Pass Mt. Hood Easterly Flow *
Monday Night Snow Level None' - None' None' - None' None' - None' *
Tuesday Snow Level None' - None' None' - None' None' - None' *
Tuesday Night Snow Level None' - None' None' - None' None' - None' *
Mt. Baker Elevation
Monday Night Snow Level
None' - None'
(Easterly Flow *)
Tuesday Snow Level
None' - None'
(Easterly Flow *)
Tuesday Night Snow Level
None' - None'
(Easterly Flow *)
Wednesday Snow Level
None' - None'
(Easterly Flow *)
Snoqualmie Pass Elevation
Monday Night Snow Level
None' - None'
(Easterly Flow *)
Tuesday Snow Level
None' - None'
(Easterly Flow *)
Tuesday Night Snow Level
None' - None'
(Easterly Flow *)
Wednesday Snow Level
None' - None'
(Easterly Flow *)
Mt. Hood Elevation
Monday Night Snow Level
None' - None'
(Easterly Flow *)
Tuesday Snow Level
None' - None'
(Easterly Flow *)
Tuesday Night Snow Level
None' - None'
(Easterly Flow *)
Wednesday Snow Level
None' - None'
(Easterly Flow *)

* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather

Previous forecast from Nov. 30, 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.