Issued: 2:07 PM PST Monday, February 5, 2024
by Robert Hahn

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

Weather Synopsis

An open trough centered along the west coast of the US spawned a subtle surface low pressure over southwestern Washington as of Monday afternoon. This surface low brings banded showers into the Mt Hood and southern Washington Cascades on SW flow with a more organized precipitation band extending from the Washington Coast over the Olympics to Snoqualmie Pass.

The low center drifts gradually northward Monday night into early Tuesday, shifting across the Cascades during the afternoon. As E flow decreases to the point of irrelevance, expect periods of light rain and snow with precipitation enhanced slightly for the southern Cascades volcanoes. Winds will be very light on Tuesday, so bands of precipitation or showers could linger for multiple hours in some places and may miss others.

Light rain and snow showers continue Tuesday night as the trough axis shifts eastward. Clouds increase once again overnight with light rain and snow redeveloping by morning as a weak frontal system approaches the coast from the NW.

The weak front shifts by the area on Wednesday with light snow showers. More of the energy and moisture shifts to our south.

 

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 Cloudy with periods of light rain and snow tapering or ending by morning.
Tuesday Partly cloudy with more sunshine in the mid-day hours.
Monday Night Cloudy with periods of light rain and snow.
Tuesday Cloudy with periods of light rain and snow becoming showery with sun breaks at times in the afternoon.
Monday Night Cloudy with increasing periods of light rain and snow.
Tuesday Cloudy with periods of light rain and snow becoming showery with sun breaks at times in the afternoon.
Monday Night Cloudy with periods of light rain and snow that may be moderate at times on the volcanoes.
Tuesday Cloudy with periods of light rain and snow becoming showery with sun breaks at times in the afternoon.
Monday Night Cloudy with periods of light rain and snow. Light ridgeline and E wind at the Pass.
Tuesday Cloudy with periods of light rain and snow becoming showery with sun breaks at times in the afternoon. Very light ridgeline and E wind at the Pass shifts W by the afternoon.
Monday Night Cloudy with periods of light rain and snow. Light ridgeline and E wind at the Pass.
Tuesday Cloudy with periods of light rain and snow becoming showery with sun breaks at times in the afternoon. Very light ridgeline and E wind at the Pass shifts W by the afternoon.
Monday Night Cloudy with periods of light rain and snow.
Tuesday A few light showers as mostly cloudy skies transition to partial cloud cover.
Monday Night Cloudy with periods of light rain and snow.
Tuesday A few light showers as mostly cloudy skies transition to partial cloud cover.
Monday Night Cloudy with periods of light rain and snow.
Tuesday A few light showers as mostly cloudy skies transition to partial cloud cover.
Monday Night Cloudy with decreasing periods of light rain and snow.
Tuesday Decreasing light showers with increasing sun breaks.

Issued: 2:07 PM PST Monday, February 5, 2024

Precipitation (in)

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

Issued: 2:07 PM PST Monday, February 5, 2024

Snow Level (ft)

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

Issued: 2:07 PM PST Monday, February 5, 2024

5000' Temperatures (°F)

Monday Night Tuesday
Max / Min Max / Min
Olympics 27 / 23 31 / 22
West North 27 / 24 30 / 24
West Central 27 / 25 30 / 26
West South 30 / 30 32 / 29
Stevens Pass 27 / 24 31 / 25
Snoqualmie Pass 28 / 26 31 / 26
East North 25 / 23 32 / 23
East Central 27 / 24 32 / 26
East South 30 / 29 34 / 28
Mt. Hood 32 / 29 31 / 28
Olympics 5000' Temperature Forecast
(Max / Min)
Monday Night 27 / 23
Tuesday 31 / 22
West North 5000' Temperature Forecast
(Max / Min)
Monday Night 27 / 24
Tuesday 30 / 24
West Central 5000' Temperature Forecast
(Max / Min)
Monday Night 27 / 25
Tuesday 30 / 26
West South 5000' Temperature Forecast
(Max / Min)
Monday Night 30 / 30
Tuesday 32 / 29
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 27 / 24
Tuesday 31 / 25
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday Night 28 / 26
Tuesday 31 / 26
East North 5000' Temperature Forecast
(Max / Min)
Monday Night 25 / 23
Tuesday 32 / 23
East Central 5000' Temperature Forecast
(Max / Min)
Monday Night 27 / 24
Tuesday 32 / 26
East South 5000' Temperature Forecast
(Max / Min)
Monday Night 30 / 29
Tuesday 34 / 28
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday Night 32 / 29
Tuesday 31 / 28

Issued: 2:07 PM PST Monday, February 5, 2024

Ridgeline Winds (mph)

Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics NE 0-10 NE 0-10 NNE 0-10 WNW 0-10
West North ESE 0-10 SSW 0-10 SW 0-10 SSW 0-10
West Central SE 5-15 SSE 0-10 S 0-10 S 0-10
West South S 5-15 SSW 0-10 SW 0-10 SSW 0-10
Stevens Pass SE 0-10 SSE 0-10 S 0-10 WSW 0-10
Snoqualmie Pass ESE 5-15 SE 0-10 SE 0-10 SW 0-10
East North SE 0-10 S 5-15 SSW 0-10 SW 0-10
East Central SSW 5-15 S 5-15 SSW 5-15 SW 0-10
East South S 0-10 S 5-15 SW 0-10 WSW 0-10
Mt. Hood SSW 10-20 SSW 10-20 SW 0-10 SW 0-10
Olympics Ridgeline Winds (mph)
Monday Evening NE 0-10
Monday Night NE 0-10
Tuesday Morning NNE 0-10
Tuesday Afternoon WNW 0-10
West North Ridgeline Winds (mph)
Monday Evening ESE 0-10
Monday Night SSW 0-10
Tuesday Morning SW 0-10
Tuesday Afternoon SSW 0-10
West Central Ridgeline Winds (mph)
Monday Evening SE 5-15
Monday Night SSE 0-10
Tuesday Morning S 0-10
Tuesday Afternoon S 0-10
West South Ridgeline Winds (mph)
Monday Evening S 5-15
Monday Night SSW 0-10
Tuesday Morning SW 0-10
Tuesday Afternoon SSW 0-10
Stevens Pass Ridgeline Winds (mph)
Monday Evening SE 0-10
Monday Night SSE 0-10
Tuesday Morning S 0-10
Tuesday Afternoon WSW 0-10
Snoqualmie Pass Ridgeline Winds (mph)
Monday Evening ESE 5-15
Monday Night SE 0-10
Tuesday Morning SE 0-10
Tuesday Afternoon SW 0-10
East North Ridgeline Winds (mph)
Monday Evening SE 0-10
Monday Night S 5-15
Tuesday Morning SSW 0-10
Tuesday Afternoon SW 0-10
East Central Ridgeline Winds (mph)
Monday Evening SSW 5-15
Monday Night S 5-15
Tuesday Morning SSW 5-15
Tuesday Afternoon SW 0-10
East South Ridgeline Winds (mph)
Monday Evening S 0-10
Monday Night S 5-15
Tuesday Morning SW 0-10
Tuesday Afternoon WSW 0-10
Mt. Hood Ridgeline Winds (mph)
Monday Evening SSW 10-20
Monday Night SSW 10-20
Tuesday Morning SW 0-10
Tuesday Afternoon SW 0-10

Issued: 2:07 PM PST Monday, February 5, 2024

Extended Weather Synopsis

Light snow showers continue Wednesday night and Thursday on the back side of a broad trough. Models disagree about the potential for a disturbance Thursday night but generally show a short-lived high pressure bringing fair weather on Friday. Temperatures should be near seasonal norms.

Extended Snow Level (ft)

Wednesday Night Thursday Thursday Night Friday
West North 2000' 2000' 1500' 1000'
Snoqualmie Pass 2000' 2000' 1500' 1500'
Mt. Hood 2500' 2000' 2000' 2000'
West North Elevation
Wednesday Night 2000'
Thursday 2000'
Thursday Night 1500'
Friday 1000'
Snoqualmie Pass Elevation
Wednesday Night 2000'
Thursday 2000'
Thursday Night 1500'
Friday 1500'
Mt. Hood Elevation
Wednesday Night 2500'
Thursday 2000'
Thursday Night 2000'
Friday 2000'

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

Previous forecast from Feb 5, 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’.