Issued: 2:32 PM PDT Monday, April 21, 2025
by Josh Lipkowitz

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

Weather Synopsis

It was a cool, mostly cloudy day across the zone, with occasional sun breaks. Aside from a stray shower or two early on, the mountains dried out after Sunday night’s system, which dropped the heaviest precipitation around Snoqualmie Pass and lighter amounts along the West Slopes and I-90 north. At 5,000ft, temperatures lingered in the mid-30s and winds eased through the afternoon. A few weak showers are showing up on the radar this afternoon, but they should fizzle by early evening, and aside from a very light shower, most locations should clear further overnight as temperatures fall into the 20s.

On Tuesday, high pressure offshore builds while dry north–northwest flow aloft sets us up for a classic spring day. Beyond some lingering low clouds early, skies should be partly to mostly sunny, winds very light and variable, and mid-elevation highs in the upper 30s to low 40s. Low and mid-level clouds may build just a bit as the afternoon progresses. The great weather continues Wednesday as the ridge shifts onshore, as each day brings even more sun and further warming.

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 Night Partly cloudy to clear skies, perhaps with some lingering low clouds. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly to mostly cloudy early with a slight chance of a shower. Then partly cloudy to clear skies. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly to mostly cloudy early with a slight chance of a shower. Then partly cloudy to clear skies. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly cloudy to clear skies, perhaps with some lingering low and mid-level clouds. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly to mostly cloudy early with a slight chance of a shower. Then partly cloudy to clear skies. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly to mostly cloudy early with a slight chance of a shower. Then partly cloudy to clear skies. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly cloudy to clear skies, perhaps with some lingering low and mid-level clouds. Light ridgeline winds.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.
Monday Night Partly cloudy to clear skies, perhaps with some lingering low and mid-level clouds, near the crest. Light to moderate ridgeline winds decrease to light overnight.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light and variable ridgeline winds.
Monday Night Partly cloudy to clear skies, perhaps with some lingering low and mid-level clouds, near the crest. Light to moderate ridgeline winds decrease to light overnight.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light and variable ridgeline winds.
Monday Night Mostly clear skies. Light to moderate ridgeline winds, decrease to light overnight.
Tuesday Partly to mostly sunny skies. Low and mid-level clouds may build just a bit in the afternoon. Light ridgeline winds.

Issued: 2:32 PM PDT Monday, April 21, 2025

Precipitation (in)

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

Issued: 2:32 PM PDT Monday, April 21, 2025

Snow Level (ft)

Monday Evening Monday Night Tuesday Morning Tuesday Afternoon Tuesday Evening Tuesday Night Wednesday Morning Wednesday Afternoon
Olympics 4500' 4000' 4000' 5000' 5000' 5000' 5500' 6500'
West North 4000' 3000' 3000' 5000' 5500' 4000' 5000' 6500'
West Central 4000' 3000' 3500' 5000' 5500' 4500' 5000' 6500'
West South 4500' 3500' 3500' 5500' 6000' 5000' 5500' 7000'
Stevens Pass 4000' 3000' 3500' 5000' 5500' 4000' 5000' 6500'
Snoqualmie Pass 4000' 3500' 3500' 5000' 5500' 4000' 5000' 6500'
East North 5000' 3500' 3500' 6000' 6000' 4500' 5500' 7000'
East Central 5000' 3500' 4000' 5500' 6000' 5000' 5500' 7000'
East South 5000' 3500' 4000' 6000' 6000' 5000' 5500' 7000'
Mt. Hood 5000' 3500' 3500' 5500' 6500' 5500' 6000' 7000'
Olympics Elevation
Monday Evening 4500'
Monday Night 4000'
Tuesday Morning 4000'
Tuesday Afternoon 5000'
Tuesday Evening 5000'
Tuesday Night 5000'
Wednesday Morning 5500'
Wednesday Afternoon 6500'
West North Elevation
Monday Evening 4000'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 5000'
Tuesday Evening 5500'
Tuesday Night 4000'
Wednesday Morning 5000'
Wednesday Afternoon 6500'
West Central Elevation
Monday Evening 4000'
Monday Night 3000'
Tuesday Morning 3500'
Tuesday Afternoon 5000'
Tuesday Evening 5500'
Tuesday Night 4500'
Wednesday Morning 5000'
Wednesday Afternoon 6500'
West South Elevation
Monday Evening 4500'
Monday Night 3500'
Tuesday Morning 3500'
Tuesday Afternoon 5500'
Tuesday Evening 6000'
Tuesday Night 5000'
Wednesday Morning 5500'
Wednesday Afternoon 7000'
Stevens Pass Elevation
Monday Evening 4000'
Monday Night 3000'
Tuesday Morning 3500'
Tuesday Afternoon 5000'
Tuesday Evening 5500'
Tuesday Night 4000'
Wednesday Morning 5000'
Wednesday Afternoon 6500'
Snoqualmie Pass Elevation
Monday Evening 4000'
Monday Night 3500'
Tuesday Morning 3500'
Tuesday Afternoon 5000'
Tuesday Evening 5500'
Tuesday Night 4000'
Wednesday Morning 5000'
Wednesday Afternoon 6500'
East North Elevation
Monday Evening 5000'
Monday Night 3500'
Tuesday Morning 3500'
Tuesday Afternoon 6000'
Tuesday Evening 6000'
Tuesday Night 4500'
Wednesday Morning 5500'
Wednesday Afternoon 7000'
East Central Elevation
Monday Evening 5000'
Monday Night 3500'
Tuesday Morning 4000'
Tuesday Afternoon 5500'
Tuesday Evening 6000'
Tuesday Night 5000'
Wednesday Morning 5500'
Wednesday Afternoon 7000'
East South Elevation
Monday Evening 5000'
Monday Night 3500'
Tuesday Morning 4000'
Tuesday Afternoon 6000'
Tuesday Evening 6000'
Tuesday Night 5000'
Wednesday Morning 5500'
Wednesday Afternoon 7000'
Mt. Hood Elevation
Monday Evening 5000'
Monday Night 3500'
Tuesday Morning 3500'
Tuesday Afternoon 5500'
Tuesday Evening 6500'
Tuesday Night 5500'
Wednesday Morning 6000'
Wednesday Afternoon 7000'

Issued: 2:32 PM PDT Monday, April 21, 2025

5000' Temperatures (°F)

Monday Night Tuesday
Max / Min Max / Min
Olympics 33 / 25 40 / 25
West North 32 / 24 38 / 24
West Central 32 / 24 38 / 24
West South 36 / 26 43 / 26
Stevens Pass 34 / 24 39 / 24
Snoqualmie Pass 33 / 24 39 / 24
East North 35 / 26 42 / 26
East Central 35 / 26 42 / 26
East South 35 / 27 43 / 27
Mt. Hood 37 / 28 44 / 28
Olympics 5000' Temperature Forecast
(Max / Min)
Monday Night 33 / 25
Tuesday 40 / 25
West North 5000' Temperature Forecast
(Max / Min)
Monday Night 32 / 24
Tuesday 38 / 24
West Central 5000' Temperature Forecast
(Max / Min)
Monday Night 32 / 24
Tuesday 38 / 24
West South 5000' Temperature Forecast
(Max / Min)
Monday Night 36 / 26
Tuesday 43 / 26
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 34 / 24
Tuesday 39 / 24
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 33 / 24
Tuesday 39 / 24
East North 5000' Temperature Forecast
(Max / Min)
Monday Night 35 / 26
Tuesday 42 / 26
East Central 5000' Temperature Forecast
(Max / Min)
Monday Night 35 / 26
Tuesday 42 / 26
East South 5000' Temperature Forecast
(Max / Min)
Monday Night 35 / 27
Tuesday 43 / 27
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday Night 37 / 28
Tuesday 44 / 28

Issued: 2:32 PM PDT Monday, April 21, 2025

Ridgeline Winds (mph)

Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics NW 0-10 NNE 0-10 N 0-10 NW 0-10
West North WSW 0-10 WNW 0-10 N 0-10 WNW 0-10
West Central WNW 0-10 NNW 0-10 N 0-10 NW 0-10
West South NW 5-15 NNW 0-10 N 0-10 N 0-10
Stevens Pass WNW 5-15 NW 0-10 WNW 0-10 WNW 0-10
Snoqualmie Pass NW 10-20 NNW 5-15 NNW 0-10 WNW 0-10
East North WNW 5-15 N 0-10 ESE 0-10 WNW 0-10
East Central NW 10-20 NNW 5-15 ESE 0-10 W 0-10
East South NW 10-20 NNW 5-15 NNE 0-10 NNE 0-10
Mt. Hood NW 5-15 NW 5-15 NNW 0-10 N 0-10
Olympics Ridgeline Winds (mph)
Monday Evening NW 0-10
Monday Night NNE 0-10
Tuesday Morning N 0-10
Tuesday Afternoon NW 0-10
West North Ridgeline Winds (mph)
Monday Evening WSW 0-10
Monday Night WNW 0-10
Tuesday Morning N 0-10
Tuesday Afternoon WNW 0-10
West Central Ridgeline Winds (mph)
Monday Evening WNW 0-10
Monday Night NNW 0-10
Tuesday Morning N 0-10
Tuesday Afternoon NW 0-10
West South Ridgeline Winds (mph)
Monday Evening NW 5-15
Monday Night NNW 0-10
Tuesday Morning N 0-10
Tuesday Afternoon N 0-10
Stevens Pass Ridgeline Winds (mph)
Monday Evening WNW 5-15
Monday Night NW 0-10
Tuesday Morning WNW 0-10
Tuesday Afternoon WNW 0-10
Snoqualmie Pass Ridgeline Winds (mph)
Monday Evening NW 10-20
Monday Night NNW 5-15
Tuesday Morning NNW 0-10
Tuesday Afternoon WNW 0-10
East North Ridgeline Winds (mph)
Monday Evening WNW 5-15
Monday Night N 0-10
Tuesday Morning ESE 0-10
Tuesday Afternoon WNW 0-10
East Central Ridgeline Winds (mph)
Monday Evening NW 10-20
Monday Night NNW 5-15
Tuesday Morning ESE 0-10
Tuesday Afternoon W 0-10
East South Ridgeline Winds (mph)
Monday Evening NW 10-20
Monday Night NNW 5-15
Tuesday Morning NNE 0-10
Tuesday Afternoon NNE 0-10
Mt. Hood Ridgeline Winds (mph)
Monday Evening NW 5-15
Monday Night NW 5-15
Tuesday Morning NNW 0-10
Tuesday Afternoon N 0-10

Issued: 2:32 PM PDT Monday, April 21, 2025

Extended Weather Synopsis

The ridge peaks on Thursday as freezing levels top out around 8000-9000ft. It should be yet another splitter of a spring day. Late Thursday into Friday, the winds increase as the next system approaches. The models don't yet have good alignment on the track of the low and just how much weather we may see, but suffice it to say, temperatures will cool and precipitation chances will increase through the day on Friday. Cool and unsettled weather looks possible through the weekend, but we will know more as we get closer.   

 

Extended Snow Level (ft)

Wednesday Night Thursday * Thursday Night* Friday
West North 6500' 8000' 8500' 5000'
Snoqualmie Pass 7000' 8000' 8000' 5000'
Mt. Hood 8000' 8000' 6500' 5000'
West North Elevation
Wednesday Night 6500'
Thursday * 8000'
Thursday Night* 8500'
Friday 5000'
Snoqualmie Pass Elevation
Wednesday Night 7000'
Thursday * 8000'
Thursday Night* 8000'
Friday 5000'
Mt. Hood Elevation
Wednesday Night 8000'
Thursday * 8000'
Thursday Night* 6500'
Friday 5000'

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

Previous forecast from Apr 20, 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’.