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Mountain Weather Forecast

Issued: 2:10 PM PST Saturday, November 23, 2024
by Robert Hahn

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

Weather Synopsis for Saturday night through Monday

A region of upper-level low pressure continues to churn offshore sending mostly light, but locally intense shower activity into our region on SSW flow on Saturday. Temperatures have been slowly cooling with snow levels generally hovering just above 3000 ft. The pattern doesn't change markedly Saturday night, however, an organized disturbance rotating around the offshore low should bring about a transition from disorganized showers to a band of moderate rain and snowfall. The rain/snow band reaches the coast Saturday night and spreads throughout the region Sunday morning, and reaches peak intensity during the afternoon. Expect very subtle cooling through Saturday night, with a slight warm-up during the day on Sunday. Light E winds will enable the precipitation to fall on both sides of the Cascade Crest. At this time, it looks like Paradise and Mt Baker may get about 8-14" of snow with this impule, while most other areas above 3500 ft picking up 4-8". Lower elevations will get a mix of rain and snow or wet snow.

The upper low offshore drifts southward Sunday night, but enough cold air remains aloft to keep mostly light snow shower activity going. Snow showers decrease from north to south on Monday as the low drifts further away. Sun breaks will be likely in the northern and central Cascades, particularly during the afternoon hours.

Weather Forecast

Olympics
Saturday Night Light to occasionally moderate rain and snow showers.
Light snow showers.
West North
Saturday Night Light rain and snow showers.
Light rain and snow showers transition to steady moderate rain and snow in the afternoon.
West Central
Saturday Night Light rain and snow showers.
Light rain and snow showers transition to steady moderate rain and snow in the afternoon.
West South
Saturday Night Increasing light rain and snow showers.
Moderate rain and snow, heaviest at Paradise.
Stevens Pass
Saturday Night Very light rain and snow showers. Light ridgeline and W wind at the Pass shift east overnight.
Increasing light snow showers. Increasing light to moderate ridgeline and E wind at the Pass.
Snoqualmie Pass
Saturday Night Very light rain and snow showers. Light ridgeline and W wind at the Pass shift east overnight.
Increasing light snow showers. Increasing light to moderate ridgeline and E wind at the Pass.
East North
Saturday Night A few flurries or snow showers in the evening, then becoming partly cloudy.
Light snow develops in the morning and may become moderate in the afternoon. Increasing light to moderate ridgeline winds.
East Central
Saturday Night A few snow showers with partly to mostly cloudy skies.
Light to moderate snow develops in the morning and continues in the afternoon. Increasing light to moderate ridgeline winds.
East South
Saturday Night A few light rain and snow showers with partial clearing most likely during the evening hours.
Increasing light rain and snow.
Mt. Hood
Saturday Night A few very light rain and snow showers. Moderate ridgeline winds.
Periods of light snow increase during the afternoon. Moderate ridgeline winds.

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' 3000'
Saturday Night Snow Level* None' None' None' None' 2500' 2500' None' 2500'
Sunday Morning Snow Level* None' None' None' None' 2500' 2500' None' 3000'
Sunday Afternoon Snow Level* None' None' None' None' 3000' 3000' None' 3500'
Sunday Evening Snow Level* None' None' None' None' 3000' 3000' None' 4000'
Sunday Night Snow Level* None' None' None' None' 3000' 3000' None' 4000'
Monday Morning Snow Level* None' None' None' None' 2500' 3000' None' 4000'
Hurricane Ridge Elevation
Saturday Evening Snow Level
None'
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'
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'
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'
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'
Saturday Night Snow Level
2500'
(Easterly Flow *)
Sunday Morning Snow Level
2500'
(Easterly Flow *)
Sunday Afternoon Snow Level
3000'
(Easterly Flow *)
Sunday Evening Snow Level
3000'
(Easterly Flow *)
Sunday Night Snow Level
3000'
(Easterly Flow *)
Monday Morning Snow Level
2500'
(Easterly Flow *)
Monday Afternoon Snow Level
3000'
(Easterly Flow *)
Snoqualmie Pass Elevation
Saturday Evening Snow Level
3000'
Saturday Night Snow Level
2500'
(Easterly Flow *)
Sunday Morning Snow Level
2500'
(Easterly Flow *)
Sunday Afternoon Snow Level
3000'
(Easterly Flow *)
Sunday Evening Snow Level
3000'
(Easterly Flow *)
Sunday Night Snow Level
3000'
(Easterly Flow *)
Monday Morning Snow Level
3000'
(Easterly Flow *)
Monday Afternoon Snow Level
3000'
(Easterly Flow *)
Mt. Rainier & Crystal Elevation
Saturday Evening Snow Level
None'
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
3000'
Saturday Night Snow Level
2500'
(Easterly Flow *)
Sunday Morning Snow Level
3000'
(Easterly Flow *)
Sunday Afternoon Snow Level
3500'
(Easterly Flow *)
Sunday Evening Snow Level
4000'
(Easterly Flow *)
Sunday Night Snow Level
4000'
(Easterly Flow *)
Monday Morning Snow Level
4000'
(Easterly Flow *)
Monday Afternoon Snow Level
4000'
(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 0.25 LT 0.10 LT 0.10 LT 0.10
Mt Baker Ski Area LT 0.25 0.25 - 0.50 0.25 LT 0.10
Mt. Loop - Barlow Pass LT 0.10 0.25 - 0.50 0.25 LT 0.10
Stevens Pass LT 0.10 LT 0.25 LT 0.25 LT 0.10
Snoqualmie Pass LT 0.10 0.25 0.25 LT 0.10
Crystal Mt LT 0.10 0.50 0.25 LT 0.10
Paradise LT 0.25 0.75 - 1.00 0.50 - 0.75 LT 0.25
White Pass LT 0.10 0.25 - 0.50 0.25 LT 0.10
Washington Pass LT 0.10 LT 0.25 LT 0.25 LT 0.10
Mission Ridge LT 0.10 0.25 - 0.50 0.25 LT 0.10
Salmon la Sac - Gallagher Head LT 0.10 0.25 - 0.50 0.25 LT 0.10
Tieton River - Darland Mt. LT 0.10 0.25 - 0.50 0.25 LT 0.10
Mt Hood Meadows LT 0.10 LT 0.25 0.25 LT 0.10
LT 0.10 0.25 0.25 LT 0.10
Hurricane Ridge Precipitation Forecast
Saturday Night 0.25
Sunday LT 0.10
Sunday Night LT 0.10
Monday LT 0.10
Mt Baker Ski Area Precipitation Forecast
Saturday Night LT 0.25
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Mt. Loop - Barlow Pass Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Stevens Pass Precipitation Forecast
Saturday Night LT 0.10
Sunday LT 0.25
Sunday Night LT 0.25
Monday LT 0.10
Snoqualmie Pass Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25
Sunday Night 0.25
Monday LT 0.10
Crystal Mt Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.50
Sunday Night 0.25
Monday LT 0.10
Paradise Precipitation Forecast
Saturday Night LT 0.25
Sunday 0.75 - 1.00
Sunday Night 0.50 - 0.75
Monday LT 0.25
White Pass Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Washington Pass Precipitation Forecast
Saturday Night LT 0.10
Sunday LT 0.25
Sunday Night LT 0.25
Monday LT 0.10
Mission Ridge Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Salmon la Sac - Gallagher Head Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Tieton River - Darland Mt. Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25
Monday LT 0.10
Mt Hood Meadows Precipitation Forecast
Saturday Night LT 0.10
Sunday LT 0.25
Sunday Night 0.25
Monday LT 0.10
Timberline Precipitation Forecast
Saturday Night LT 0.10
Sunday 0.25
Sunday Night 0.25
Monday LT 0.10

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 WSW None - None
Saturday Night --- None - None --- None - None --- None - None --- None - None SSW 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 WSW None - None
Saturday Night SSW None - None
Sunday Morning SSW None - None
Sunday Afternoon SSW 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 WSW None - None
Saturday Night SSW None - None
Sunday Morning SSW None - None
Sunday Afternoon SSW 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.

Extended Weather Synopsis for Monday night through Wednesday

Chances of showers linger Monday night but become increasingly isolated. The upper trough moves onshore over southern Oregon early Tuesday, leaving a drying northerly flow across our region and much better chances for sunshine. Flow switches NWerly Tuesday night and a weak disturbance likely brings some light snow to the mountains of northwestern Washington on Wednesday along with slightly cooler temperatures.

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

* 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 I Extended Weather

Previous forecast from Nov. 22, 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.