Issued: 6:59 AM PDT Monday, April 8, 2024
by Dallas Glass

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

Weather Synopsis

There are a few flurries out there this morning, but in general, we'll be dry across the mountains to start the day. That will change as a storm system impacts the region for the next 24-36 hours and brings gusty winds, mild temperatures, and periods of heavier precipitation. 

An approaching warm front will spread light rain and snow to the Western Olympics this morning. By midday, precipitation slowly works its way inland to Mt Baker and the Mt Loop Highway areas and then drifts southward. Clouds, temperatures, and winds all increase throughout the day and into the evening. Many areas should see gusty moderate to strong ridgeline winds. 

Overnight, the storm focuses on the Central Cascades as we sit in the warm sector. Snow levels should hover between 4500 and 5500 ft. Expect precipitation and winds to steadily increase as a trailing cold front approaches the coast. Just before daybreak on Tuesday, the storm will be at its peak. Most locations will see strong and gusty winds along with moderate to heavy precipitation. This will be the best chance for precipitation east of the Cascade crest. 

By late morning, the storm should be winding down, and snow levels falling. Post-frontal showers and a Puget Sound Convergence Zone will keep rain/snow falling along the west slopes of the Cascades. Wind speeds should decrease by the afternoon, and you could even see a few sun breaks primarily east of the Crest. While not a big storm, upper elevations in the West Side and Cascade Pass forecast zones could receive 8-12 inches of snow. 

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 Cloudy with rain and snow, heaviest in the western Olympics. SW winds becoming moderate to strong and gusty.
Monday Night Rain and snow, heaviest in the Western Olympics. Moderate to strong and gusty winds decreasing slightly.
Monday Cloudy, generally light rain and snow developing in the afternoon. Moderate and gusty S winds turning SSW and increasing.
Monday Night Stormy, with moderate to strong and gusty SSW winds and periods of moderate to heavy precipitation especially after midnight.
Monday Cloudy in the morning with generally light precipitation developing around lunchtime. SW winds becoming moderate.
Monday Night Stormy with periods of moderate to heavy precipitation and strong and gusty SW winds decreasing slightly.
Monday Clouds thickening and lowering. Areas of light precipitation possible in the afternoon particularly near and north of Hwy 12. SW winds becoming moderate and gusty.
Monday Night Rain and snow, heaviest near Mt Rainier. Moderate to strong and gusty WSW winds decreasing slightly.
Monday Clouds thickening during the day. Periods of light rain and snow in the afternoon. W winds becoming moderate and gusty.
Monday Night Rain and snow could be heavy at times. Moderate and gusty W winds.
Monday Clouds thickening during the day. Periods of light rain and snow in the afternoon. W winds becoming moderate and gusty.
Monday Night Rain and snow increasing overnight, heavy at times. Moderate to strong and gusty W winds.
Monday Partly to mostly cloudy with clouds increasing. Areas of light rain and snow in the afternoon near the crest. Winds becoming moderate and gusty from the SW.
Monday Night Cloudy with generally light rain and snow. W winds becoming strong and gusty.
Monday Partly to mostly cloud in the morning with clouds increasing throughout the day. Periods of light rain and snow possible near the crest in the afternoon. Moderate and gusty W winds increasing.
Monday Night Cloudy with light rain and snow, heavier after midnight. Strong and gusty W winds.
Monday Partly cloudy in the morning, becoming cloudy by the afternoon. A few brief periods of light rain and snow possible near the crest. W winds becoming moderate to strong and gusty.
Monday Night Cloudy with areas of light rain and snow. Strong and gusty W winds.
Monday Cloudy on the W and S sides of the mountain, with more sunshine W. Clouds increasing later in the day. Moderate and gusty W winds.
Monday Night Cloudy with periods of generally light rain and snow. Strong and gusty W winds increasing overnight.

Issued: 6:59 AM PDT Monday, April 8, 2024

Precipitation (in)

Monday Monday Night Tuesday
5 am - 5 pm 5 pm - 5 am 5 am - 5 pm
Hurricane Ridge LT 0.10 0.25 LT 0.10
Mt Baker Ski Area 0.50 0.75 -1.00 0.25
Mt. Loop - Barlow Pass 0.25 1.00 - 1.50 0.50
Stevens Pass LT 0.25 0.75 0.25
Snoqualmie Pass 0.25 0.50 - 0.75 0.25
Crystal Mt LT 0.10 0.25 LT 0.10
Paradise LT 0.25 0.75 0.25
White Pass LT 0.10 0.25 - 0.50 LT 0.25
Washington Pass LT 0.10 0.25 - 0.50 LT 0.10
Mission Ridge 0 LT 0.25 LT 0.10
Salmon la Sac - Gallagher Head LT 0.10 0.25 - 0.50 LT 0.25
Tieton River - Darland Mt. 0 LT 0.25 LT 0.10
Mt Hood Meadows 0 LT 0.25 LT 0.25
Timberline 0 0.25 LT 0.25
Hurricane Ridge Precipitation (in)
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Mt Baker Ski Area Precipitation (in)
Monday 0.50
Monday Night 0.75 -1.00
Tuesday 0.25
Mt. Loop - Barlow Pass Precipitation (in)
Monday 0.25
Monday Night 1.00 - 1.50
Tuesday 0.50
Stevens Pass Precipitation (in)
Monday LT 0.25
Monday Night 0.75
Tuesday 0.25
Snoqualmie Pass Precipitation (in)
Monday 0.25
Monday Night 0.50 - 0.75
Tuesday 0.25
Crystal Mt Precipitation (in)
Monday LT 0.10
Monday Night 0.25
Tuesday LT 0.10
Paradise Precipitation (in)
Monday LT 0.25
Monday Night 0.75
Tuesday 0.25
White Pass Precipitation (in)
Monday LT 0.10
Monday Night 0.25 - 0.50
Tuesday LT 0.25
Washington Pass Precipitation (in)
Monday LT 0.10
Monday Night 0.25 - 0.50
Tuesday LT 0.10
Mission Ridge Precipitation (in)
Monday 0
Monday Night LT 0.25
Tuesday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Monday LT 0.10
Monday Night 0.25 - 0.50
Tuesday LT 0.25
Tieton River - Darland Mt. Precipitation (in)
Monday 0
Monday Night LT 0.25
Tuesday LT 0.10
Mt Hood Meadows Precipitation (in)
Monday 0
Monday Night LT 0.25
Tuesday LT 0.25
Timberline Precipitation (in)
Monday 0
Monday Night 0.25
Tuesday LT 0.25

Issued: 6:59 AM PDT Monday, April 8, 2024

Snow Level (ft)

Monday Morning Monday Afternoon Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 3000' 4500' 5000' 4500' 3000' 3500'
West North 2500' 3500' 4000' 4500' 3000' 3000'
West Central 2500' 3500' 4500' 4500' 3500' 3500'
West South 2500' 4500' 5000' 5000' 4500' 4500'
Stevens Pass 2500' 4000' 4500' 4500' 4000' 4000'
Snoqualmie Pass 2500' 4000' 5000' 5000' 4000' 4000'
East North 2000' 4000' 4500' 4500' 4000' 4000'
East Central 2500' 4500' 5000' 5000' 4500' 4500'
East South 2500' 4500' 5000' 5000' 4500' 4500'
Mt. Hood 3000' 5500' 5000' 5500' 5000' 5000'
Olympics Elevation
Monday Morning 3000'
Monday Afternoon 4500'
Monday Evening 5000'
Monday Night 4500'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
West North Elevation
Monday Morning 2500'
Monday Afternoon 3500'
Monday Evening 4000'
Monday Night 4500'
Tuesday Morning 3000'
Tuesday Afternoon 3000'
West Central Elevation
Monday Morning 2500'
Monday Afternoon 3500'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 3500'
Tuesday Afternoon 3500'
West South Elevation
Monday Morning 2500'
Monday Afternoon 4500'
Monday Evening 5000'
Monday Night 5000'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
Stevens Pass Elevation
Monday Morning 2500'
Monday Afternoon 4000'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
Snoqualmie Pass Elevation
Monday Morning 2500'
Monday Afternoon 4000'
Monday Evening 5000'
Monday Night 5000'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
East North Elevation
Monday Morning 2000'
Monday Afternoon 4000'
Monday Evening 4500'
Monday Night 4500'
Tuesday Morning 4000'
Tuesday Afternoon 4000'
East Central Elevation
Monday Morning 2500'
Monday Afternoon 4500'
Monday Evening 5000'
Monday Night 5000'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
East South Elevation
Monday Morning 2500'
Monday Afternoon 4500'
Monday Evening 5000'
Monday Night 5000'
Tuesday Morning 4500'
Tuesday Afternoon 4500'
Mt. Hood Elevation
Monday Morning 3000'
Monday Afternoon 5500'
Monday Evening 5000'
Monday Night 5500'
Tuesday Morning 5000'
Tuesday Afternoon 5000'

Issued: 6:59 AM PDT Monday, April 8, 2024

5000' Temperatures (°F)

Monday Monday Night
Max / Min Max / Min
Olympics 35 / 25 36 / 32
West North 33 / 25 33 / 30
West Central 35 / 25 34 / 30
West South 36 / 25 34 / 31
Stevens Pass 35 / 25 34 / 31
Snoqualmie Pass 34 / 24 34 / 31
East North 35 / 21 34 / 30
East Central 35 / 26 33 / 32
East South 37 / 24 35 / 32
Mt. Hood 37 / 26 35 / 31
Olympics 5000' Temperature Forecast
(Max / Min)
Monday 35 / 25
Monday Night 36 / 32
West North 5000' Temperature Forecast
(Max / Min)
Monday 33 / 25
Monday Night 33 / 30
West Central 5000' Temperature Forecast
(Max / Min)
Monday 35 / 25
Monday Night 34 / 30
West South 5000' Temperature Forecast
(Max / Min)
Monday 36 / 25
Monday Night 34 / 31
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday 35 / 25
Monday Night 34 / 31
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday 34 / 24
Monday Night 34 / 31
East North 5000' Temperature Forecast
(Max / Min)
Monday 35 / 21
Monday Night 34 / 30
East Central 5000' Temperature Forecast
(Max / Min)
Monday 35 / 26
Monday Night 33 / 32
East South 5000' Temperature Forecast
(Max / Min)
Monday 37 / 24
Monday Night 35 / 32
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday 37 / 26
Monday Night 35 / 31

Issued: 6:59 AM PDT Monday, April 8, 2024

Ridgeline Winds (mph)

Monday Morning Monday Afternoon Monday Evening Monday Night
Olympics SW 10-20 SW 20-30 SW 20-30 WSW 15-25
West North S 15-25 SSW 20-30 SSW 20-30 SW 15-25
West Central SW 10-20 SW 15-25 SW 20-30 SW 15-25
West South SW 10-20 SW 15-25 WSW 20-30 W 15-25
Stevens Pass W 5-15 W 10-20 W 15-25 W 15-25
Snoqualmie Pass W 10-20 W 15-25 W 20-30 W 20-30
East North W 10-20 SW 15-25 W 20-30 W 25-35
East Central W 10-20 W 20-30 W 25-35 W 30-40
East South W 10-20 W 20-30 W 25-35 W 25-35
Mt. Hood W 15-25 W 15-25 W 25-35 W 30-40
Olympics Ridgeline Winds (mph)
Monday Morning SW 10-20
Monday Afternoon SW 20-30
Monday Evening SW 20-30
Monday Night WSW 15-25
West North Ridgeline Winds (mph)
Monday Morning S 15-25
Monday Afternoon SSW 20-30
Monday Evening SSW 20-30
Monday Night SW 15-25
West Central Ridgeline Winds (mph)
Monday Morning SW 10-20
Monday Afternoon SW 15-25
Monday Evening SW 20-30
Monday Night SW 15-25
West South Ridgeline Winds (mph)
Monday Morning SW 10-20
Monday Afternoon SW 15-25
Monday Evening WSW 20-30
Monday Night W 15-25
Stevens Pass Ridgeline Winds (mph)
Monday Morning W 5-15
Monday Afternoon W 10-20
Monday Evening W 15-25
Monday Night W 15-25
Snoqualmie Pass Ridgeline Winds (mph)
Monday Morning W 10-20
Monday Afternoon W 15-25
Monday Evening W 20-30
Monday Night W 20-30
East North Ridgeline Winds (mph)
Monday Morning W 10-20
Monday Afternoon SW 15-25
Monday Evening W 20-30
Monday Night W 25-35
East Central Ridgeline Winds (mph)
Monday Morning W 10-20
Monday Afternoon W 20-30
Monday Evening W 25-35
Monday Night W 30-40
East South Ridgeline Winds (mph)
Monday Morning W 10-20
Monday Afternoon W 20-30
Monday Evening W 25-35
Monday Night W 25-35
Mt. Hood Ridgeline Winds (mph)
Monday Morning W 15-25
Monday Afternoon W 15-25
Monday Evening W 25-35
Monday Night W 30-40

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

Previous forecast from Apr 7, 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’.