Issued: 2:38 PM PDT Sunday, March 30, 2025
by Robert Hahn

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

Weather Synopsis

Several waves of moisture will rotate into the region Sunday night and Monday as an offshore low heads toward the Oregon Coast. The first wave of moisture lifting north is bringing some light rain and snow to the Mt Hood areas Sunday afternoon. This band will target the southern Washington Cascades in the evening and the northern Cascades overnight. Moderate to locally strong ESE winds ahead of this wave will ease in its wake as wind switch SSW. Shower activity may be slow to fill back in behind this wave, but some light shower activity should continue Sunday night and Monday morning as snow levels lower from 4500 ft Sunday evening to 3000-3500 ft on Monday. Shower activity may become more vigorous, widespread, and convective with some embedded graupel on Monday afternoon.

The upper low moves onshore Monday night, but the general impact for our region will be broad troughing and generally light winds. This creates the conditions for decreasing scattered to isolated rain and snow showers through Tuesday. Expect snow levels to drop to 2500 ft (below seasonal norms).

 

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
Sunday Night Periods of light rain and snow (moderate in the evening for the eastern Olympics) become showery overnight. Decreasing moderate ridgeline winds.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Increasing periods of light to occasionally moderate rain and snow. Light to moderate ridgeline winds.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Increasing periods of light to occasionally moderate rain and snow. Decreasing light to moderate ridgeline winds.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Light to moderate rain and snow in the evening transitions to light showers overnight. Decreasing moderate ridgeline winds.
Monday Light to occasionally moderate rain and snow showers.
Sunday Night Periods of light rain and snow. Moderate ridgeline winds become light. Light to moderate E wind switches W overnight at the Pass.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon. Light ridgeline and W wind at the Pass.
Sunday Night Periods of light rain and snow. Moderate ridgeline winds become light. Light to moderate E wind switches W overnight at the Pass.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon. Light ridgeline and W wind at the Pass.
Sunday Night Increasing periods of light rain and snow. Moderate ridgeline winds become light.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Periods of light rain and snow, heaviest in the late evening. Moderate ridgeline winds become light.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Periods of light rain and snow, heaviest in the early evening. Increasing light to moderate ridgeline winds.
Monday A few isolated light rain and snow showers in the morning increase in intensity and become more widespread by the afternoon.
Sunday Night Light rain and snow showers decrease and become showery overnight. Moderate ridgeline winds.
Monday Light rain and snow showers increase slightly in the afternoon.

Precipitation (in)

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

Snow Level (ft)

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

5000' Temperatures (°F)

Sunday Night Monday
Max / Min Max / Min
Olympics 36 / 27 32 / 26
West North 36 / 29 32 / 27
West Central 36 / 29 32 / 26
West South 36 / 27 32 / 26
Stevens Pass 36 / 27 33 / 26
Snoqualmie Pass 35 / 26 32 / 25
East North 35 / 26 35 / 24
East Central 35 / 28 33 / 26
East South 34 / 25 32 / 24
Mt. Hood 35 / 26 31 / 26
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday Night 36 / 27
Monday 32 / 26
West North 5000' Temperature Forecast
(Max / Min)
Sunday Night 36 / 29
Monday 32 / 27
West Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 36 / 29
Monday 32 / 26
West South 5000' Temperature Forecast
(Max / Min)
Sunday Night 36 / 27
Monday 32 / 26
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 36 / 27
Monday 33 / 26
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 35 / 26
Monday 32 / 25
East North 5000' Temperature Forecast
(Max / Min)
Sunday Night 35 / 26
Monday 35 / 24
East Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 35 / 28
Monday 33 / 26
East South 5000' Temperature Forecast
(Max / Min)
Sunday Night 34 / 25
Monday 32 / 24
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday Night 35 / 26
Monday 31 / 26

Ridgeline Winds (mph)

Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics ESE 15-25 SSW 10-20 SSW 0-10 VAR 0-10
West North ESE 10-20 S 10-20 S 5-15 WSW 0-10
West Central ESE 20-30 SSW 10-20 SSW 5-15 W 0-10
West South SSE 15-25 SW 10-20 SSW 5-15 WSW 5-15
Stevens Pass ESE 15-25 WSW 5-15 W 0-10 W 5-15
Snoqualmie Pass ESE 25-35 WSW 10-20 W 5-15 WNW 5-15
East North ESE 15-25 S 5-15 WSW 5-15 W 5-15
East Central ESE 15-25 WSW 5-15 WSW 0-10 W 5-15
East South SSE 10-20 WSW 5-15 WSW 5-15 W 5-15
Mt. Hood SW 20-30 SW 15-25 SW 15-25 WSW 15-25
Olympics Ridgeline Winds (mph)
Sunday Evening ESE 15-25
Sunday Night SSW 10-20
Monday Morning SSW 0-10
Monday Afternoon VAR 0-10
West North Ridgeline Winds (mph)
Sunday Evening ESE 10-20
Sunday Night S 10-20
Monday Morning S 5-15
Monday Afternoon WSW 0-10
West Central Ridgeline Winds (mph)
Sunday Evening ESE 20-30
Sunday Night SSW 10-20
Monday Morning SSW 5-15
Monday Afternoon W 0-10
West South Ridgeline Winds (mph)
Sunday Evening SSE 15-25
Sunday Night SW 10-20
Monday Morning SSW 5-15
Monday Afternoon WSW 5-15
Stevens Pass Ridgeline Winds (mph)
Sunday Evening ESE 15-25
Sunday Night WSW 5-15
Monday Morning W 0-10
Monday Afternoon W 5-15
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Evening ESE 25-35
Sunday Night WSW 10-20
Monday Morning W 5-15
Monday Afternoon WNW 5-15
East North Ridgeline Winds (mph)
Sunday Evening ESE 15-25
Sunday Night S 5-15
Monday Morning WSW 5-15
Monday Afternoon W 5-15
East Central Ridgeline Winds (mph)
Sunday Evening ESE 15-25
Sunday Night WSW 5-15
Monday Morning WSW 0-10
Monday Afternoon W 5-15
East South Ridgeline Winds (mph)
Sunday Evening SSE 10-20
Sunday Night WSW 5-15
Monday Morning WSW 5-15
Monday Afternoon W 5-15
Mt. Hood Ridgeline Winds (mph)
Sunday Evening SW 20-30
Sunday Night SW 15-25
Monday Morning SW 15-25
Monday Afternoon WSW 15-25

Extended Weather Synopsis

A weak disturbance arrives from the NW Tuesday night, keeping some light snow showers in the forecast along with a chance for weak convergence. Flow switches more northerly on Wednesday with continued chances for very light snow showers and cloudiness along the W slopes of the Cascades. Northly flow should bring drier weather on Thursday. Temperatures remain below seasonal norms.

Extended Snow Level (ft)

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

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

Previous forecast from Mar 30, 2025

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’.