Issued: 2:08 PM PST Saturday, February 10, 2024
by Dennis D'Amico

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

Weather Synopsis

The upper level ridge that paved the way for a mostly dry and mild Saturday outside of the Olympics will shift eastward and flatten tonight as a developing frontal system pushes light precipitation into the Olymipcs and north Cascades. Precipitation will shift further inland during the day on Sunday followed by a frontal passage in the early afternoon hours.  The west slopes of the Cascades from Hwy 2 to the Canadian border will receive the heaviest precipitation with lighter amounts elsewhere on Sunday. This system will bring snow to the mid and upper elevations but many lower elevation trailheads will see mostly or all rain. Easterly flow will briefly keep snow levels lower in the Cascade Passes and along the east slopes of the Cascades but this is by no means a "cold" storm. After the frontal passage, we'll see more uniform 4000-4500' snow levels across the region Sunday afternoon. S through SW ridgeline winds will increase on Sunday and stay elevated through Sunday night. 

Luckily the storm won't be done with us just yet, the low pressure system will become an open trough and pass inland late Sunday night and Monday as snow levels lower to around 3000-3500'. An additional 0.25-0.50" or 3-6" of snow seems likely Sunday night with lighter totals along the east slopes of the Cascades, Olympics and Mt Hood. Showers will continue in a similar vein through Monday morning but will taper off Monday afternoon. 

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
Saturday Night Cloudy with light rain and snow developing overnight. Moderate ridgeline winds developing after midnight.
Sunday Light to occasionally moderate rain or snow becoming light showers mid-day. Moderate to strong ridgeline winds.
Saturday Night Cloudy with light rain and snow developing overnight and increasing late. Moderate ridgeline winds developing after midnight.
Sunday Light to moderate rain or snow becoming light to moderate showers in the early afternoon. Moderate to strong ridgeline winds.
Saturday Night Cloudy with light rain and snow developing overnight.
Sunday Light to occasionally moderate rain or snow becoming light to moderate showers in the early afternoon. Moderate to strong ridgeline winds.
Saturday Night Partly cloudy in the evening, then becoming cloudy.
Sunday Cloudy with light rain or snow developing in the morning, then becoming light to occasionally moderate showers in the afternoon. Heaviest showers Paradise area. Moderate ridgeline winds increasing in the afternoon.
Saturday Night Mostly cloudy in the evening, then becoming cloudy. Slight chance of light rain or snow late. Light E winds at Pass level, light to moderate W winds at ridgeline.
Sunday Cloudy with light to moderate rain or snow developing in the morning and becoming light to moderate showers in the early afternoon. Moderate ridgeline SW winds increasing in the afternoon. Light east winds at Pass level becoming moderate W in the afternoon.
Saturday Night Mostly cloudy in the evening, then becoming cloudy. Light E winds at Pass level, light to moderate W winds at ridgeline.
Sunday Cloudy with light to moderate rain or snow developing in the morning and becoming light to moderate showers in the early afternoon.Moderate ridgeline SW winds increasing in the afternoon. Light east winds at Pass level becoming moderate W in the afternoon.
Saturday Night Cloudy. Chance of light rain or snow late.
Sunday Cloudy with light to occasionally moderate rain or snow in the morning, then becoming light to occasionally moderate showers in the afternoon.
Saturday Night Mostly cloudy, then cloudy after midnight.
Sunday Cloudy with light to occasionally moderate rain or snow developing in the morning, then becoming light to occasionally moderate showers in the afternoon. Moderate ridgeline winds increasing in the afternoon.
Saturday Night Partly to mostly cloudy, then cloudy after midnight.
Sunday Cloudy with light to occasionally moderate rain or snow developing in the morning, then becoming light showers in the afternoon. Moderate ridgeline winds increasing in the afternoon.
Saturday Night Partly cloudy, then mostly cloudy after midnight.
Sunday Cloudy in the morning, then light to occasionally moderate rain or snow developing late morning, then becoming light showers in the afternoon. Moderate to strong ridgeline winds.

Issued: 2:08 PM PST Saturday, February 10, 2024

Precipitation (in)

Saturday Night Sunday Sunday Night Monday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.25 LT 0.25 LT 0.25 LT 0.10
Mt Baker Ski Area 0.25 0.75 -1.00 0.50 LT 0.25
Mt. Loop - Barlow Pass LT 0.10 0.50 - 0.75 0.50 0.25
Stevens Pass LT 0.10 0.25 - 0.50 0.25 - 0.50 0.25
Snoqualmie Pass LT 0.10 0.25 - 0.50 0.25 - 0.50 0.25
Crystal Mt 0 LT 0.25 LT 0.10 LT 0.10
Paradise 0 0.50 0.25 - 0.50 0.25 - 0.50
White Pass 0 LT 0.25 LT 0.25 0.25
Washington Pass LT 0.10 0.25 - 0.50 LT 0.25 LT 0.10
Mission Ridge 0 LT 0.10 LT 0.10 LT 0.10
Salmon la Sac - Gallagher Head 0 0.25 0.25 LT 0.25
Tieton River - Darland Mt. 0 LT 0.10 LT 0.10 LT 0.10
Mt Hood Meadows 0 LT 0.25 LT 0.25 0.25
Timberline 0 0.25 0.25 0.25 - 0.50
Hurricane Ridge Precipitation (in)
Saturday Night LT 0.25
Sunday LT 0.25
Sunday Night LT 0.25
Monday LT 0.10
Mt Baker Ski Area Precipitation (in)
Saturday Night 0.25
Sunday 0.75 -1.00
Sunday Night 0.50
Monday LT 0.25
Mt. Loop - Barlow Pass Precipitation (in)
Saturday Night LT 0.10
Sunday 0.50 - 0.75
Sunday Night 0.50
Monday 0.25
Stevens Pass Precipitation (in)
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25 - 0.50
Monday 0.25
Snoqualmie Pass Precipitation (in)
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night 0.25 - 0.50
Monday 0.25
Crystal Mt Precipitation (in)
Saturday Night 0
Sunday LT 0.25
Sunday Night LT 0.10
Monday LT 0.10
Paradise Precipitation (in)
Saturday Night 0
Sunday 0.50
Sunday Night 0.25 - 0.50
Monday 0.25 - 0.50
White Pass Precipitation (in)
Saturday Night 0
Sunday LT 0.25
Sunday Night LT 0.25
Monday 0.25
Washington Pass Precipitation (in)
Saturday Night LT 0.10
Sunday 0.25 - 0.50
Sunday Night LT 0.25
Monday LT 0.10
Mission Ridge Precipitation (in)
Saturday Night 0
Sunday LT 0.10
Sunday Night LT 0.10
Monday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Saturday Night 0
Sunday 0.25
Sunday Night 0.25
Monday LT 0.25
Tieton River - Darland Mt. Precipitation (in)
Saturday Night 0
Sunday LT 0.10
Sunday Night LT 0.10
Monday LT 0.10
Mt Hood Meadows Precipitation (in)
Saturday Night 0
Sunday LT 0.25
Sunday Night LT 0.25
Monday 0.25
Timberline Precipitation (in)
Saturday Night 0
Sunday 0.25
Sunday Night 0.25
Monday 0.25 - 0.50

Issued: 2:08 PM PST Saturday, February 10, 2024

Snow Level (ft)

Saturday Evening Saturday Night* Sunday Morning* Sunday Afternoon Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics 6000' 6000' 5000' 4500' 4500' 4000' 3500' 3500'
West North 4000' 4500' 4000' 4000' 3500' 3000' 3500' 3500'
West Central 4000' 4500' 4000' 4000' 3500' 3000' 3500' 3500'
West South 4000' 4500' 4000' 4500' 4000' 3000' 3500' 3500'
Stevens Pass 3500' 3000' 3000' 4000' 3500' 3000' 3500' 3500'
Snoqualmie Pass 4000' 5000' 3000' 4500' 3500' 3000' 3500' 3500'
East North 3000' 3000' 3500' 4000' 3500' 3000' 3500' 4500'
East Central 3000' 3000' 3500' 4000' 3500' 3000' 3500' 4500'
East South 3500' 3500' 4000' 4500' 4000' 3000' 3500' 4500'
Mt. Hood 5500' 6500' 5500' 5000' 4000' 3000' 3500' 4000'
Olympics Elevation
Saturday Evening 6000'
Saturday Night* 6000'
Sunday Morning* 5000'
Sunday Afternoon 4500'
Sunday Evening 4500'
Sunday Night 4000'
Monday Morning 3500'
Monday Afternoon 3500'
West North Elevation
Saturday Evening 4000'
Saturday Night* 4500'
Sunday Morning* 4000'
Sunday Afternoon 4000'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 3500'
West Central Elevation
Saturday Evening 4000'
Saturday Night* 4500'
Sunday Morning* 4000'
Sunday Afternoon 4000'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 3500'
West South Elevation
Saturday Evening 4000'
Saturday Night* 4500'
Sunday Morning* 4000'
Sunday Afternoon 4500'
Sunday Evening 4000'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 3500'
Stevens Pass Elevation
Saturday Evening 3500'
Saturday Night* 3000'
Sunday Morning* 3000'
Sunday Afternoon 4000'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 3500'
Snoqualmie Pass Elevation
Saturday Evening 4000'
Saturday Night* 5000'
Sunday Morning* 3000'
Sunday Afternoon 4500'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 3500'
East North Elevation
Saturday Evening 3000'
Saturday Night* 3000'
Sunday Morning* 3500'
Sunday Afternoon 4000'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 4500'
East Central Elevation
Saturday Evening 3000'
Saturday Night* 3000'
Sunday Morning* 3500'
Sunday Afternoon 4000'
Sunday Evening 3500'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 4500'
East South Elevation
Saturday Evening 3500'
Saturday Night* 3500'
Sunday Morning* 4000'
Sunday Afternoon 4500'
Sunday Evening 4000'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 4500'
Mt. Hood Elevation
Saturday Evening 5500'
Saturday Night* 6500'
Sunday Morning* 5500'
Sunday Afternoon 5000'
Sunday Evening 4000'
Sunday Night 3000'
Monday Morning 3500'
Monday Afternoon 4000'

Issued: 2:08 PM PST Saturday, February 10, 2024

5000' Temperatures (°F)

Saturday Night Sunday
Max / Min Max / Min
Olympics 34 / 31 33 / 29
West North 31 / 29 32 / 29
West Central 30 / 29 32 / 29
West South 31 / 28 33 / 29
Stevens Pass 29 / 27 32 / 27
Snoqualmie Pass 30 / 28 32 / 28
East North 29 / 25 30 / 24
East Central 30 / 27 33 / 27
East South 32 / 29 35 / 29
Mt. Hood 33 / 30 35 / 31
Olympics 5000' Temperature Forecast
(Max / Min)
Saturday Night 34 / 31
Sunday 33 / 29
West North 5000' Temperature Forecast
(Max / Min)
Saturday Night 31 / 29
Sunday 32 / 29
West Central 5000' Temperature Forecast
(Max / Min)
Saturday Night 30 / 29
Sunday 32 / 29
West South 5000' Temperature Forecast
(Max / Min)
Saturday Night 31 / 28
Sunday 33 / 29
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Saturday Night 29 / 27
Sunday 32 / 27
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Saturday Night 30 / 28
Sunday 32 / 28
East North 5000' Temperature Forecast
(Max / Min)
Saturday Night 29 / 25
Sunday 30 / 24
East Central 5000' Temperature Forecast
(Max / Min)
Saturday Night 30 / 27
Sunday 33 / 27
East South 5000' Temperature Forecast
(Max / Min)
Saturday Night 32 / 29
Sunday 35 / 29
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Saturday Night 33 / 30
Sunday 35 / 31

Issued: 2:08 PM PST Saturday, February 10, 2024

Ridgeline Winds (mph)

Saturday Evening Saturday Night Sunday Morning Sunday Afternoon
Olympics SW 5-15 SW 10-20 SW 20-30 SSW 15-25
West North SW 0-10 SSW 10-20 S 15-25 S 20-30
West Central NW 5-15 SW 5-15 SW 15-25 SW 20-30
West South NW 0-10 SW 5-15 SSW 15-25 SW 20-30
Stevens Pass NW 5-15 WSW 0-10 SW 5-15 SW 15-25
Snoqualmie Pass NW 5-15 SW 5-15 SW 10-20 SW 20-30
East North WNW 5-15 W 0-10 SSW 5-15 SW 15-25
East Central NW 5-15 WSW 5-15 SW 10-20 SW 15-25
East South NW 5-15 WSW 5-15 SW 10-20 SW 15-25
Mt. Hood NW 5-15 W 10-20 SW 15-25 WSW 20-30
Olympics Ridgeline Winds (mph)
Saturday Evening SW 5-15
Saturday Night SW 10-20
Sunday Morning SW 20-30
Sunday Afternoon SSW 15-25
West North Ridgeline Winds (mph)
Saturday Evening SW 0-10
Saturday Night SSW 10-20
Sunday Morning S 15-25
Sunday Afternoon S 20-30
West Central Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night SW 5-15
Sunday Morning SW 15-25
Sunday Afternoon SW 20-30
West South Ridgeline Winds (mph)
Saturday Evening NW 0-10
Saturday Night SW 5-15
Sunday Morning SSW 15-25
Sunday Afternoon SW 20-30
Stevens Pass Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night WSW 0-10
Sunday Morning SW 5-15
Sunday Afternoon SW 15-25
Snoqualmie Pass Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night SW 5-15
Sunday Morning SW 10-20
Sunday Afternoon SW 20-30
East North Ridgeline Winds (mph)
Saturday Evening WNW 5-15
Saturday Night W 0-10
Sunday Morning SSW 5-15
Sunday Afternoon SW 15-25
East Central Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night WSW 5-15
Sunday Morning SW 10-20
Sunday Afternoon SW 15-25
East South Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night WSW 5-15
Sunday Morning SW 10-20
Sunday Afternoon SW 15-25
Mt. Hood Ridgeline Winds (mph)
Saturday Evening NW 5-15
Saturday Night W 10-20
Sunday Morning SW 15-25
Sunday Afternoon WSW 20-30

Issued: 2:08 PM PST Saturday, February 10, 2024

Extended Weather Synopsis

A broad upper level trough over much of central and western Canada will dig further west and over our area Monday night through Tuesday night.  This should be a mainly dry pattern with variable cloud cover.  Forecast models still diverge how the pattern evolves midweek but there seems to be a shift towards drier solutions with the storm track sticking to our south. 

Extended Snow Level (ft)

Monday Night Tuesday Tuesday Night Wednesday *
West North 3000' 3500' 1500' 2500'
Snoqualmie Pass 3000' 4000' 2000' 2500'
Mt. Hood 3000' 6000' 4000' 3500'
West North Elevation
Monday Night 3000'
Tuesday 3500'
Tuesday Night 1500'
Wednesday * 2500'
Snoqualmie Pass Elevation
Monday Night 3000'
Tuesday 4000'
Tuesday Night 2000'
Wednesday * 2500'
Mt. Hood Elevation
Monday Night 3000'
Tuesday 6000'
Tuesday Night 4000'
Wednesday * 3500'

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

Previous forecast from Feb 10, 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’.