Issued: 2:16 PM PST Sunday, February 13, 2022
by Robert Hahn

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

Weather Synopsis

By Sunday evening, the high-pressure ridge has finally shifted east of the Cascades and continues to exit the region. Clouds lower and thicken ahead of a well-developed upper low dropping into the region from the NW. Temperatures remain mild during the evening but should drop more drastically during the early morning hours as light rain and snow develop along the west slopes of the Olympic Mountains. With increasing wind speeds and cloud cover, inversions shouldn't be as pronounced as on previous nights.

Precipitation spreads throughout the Cascades by around 7 AM as the closed low progresses somewhat quickly into southern Washington. Expect strong SW winds to develop Sunday night and peak early Monday at Mt. Hood area and the East South Washington Cascades although S winds at Mt. Baker should peak during the early morning hours. We expect light to moderate rain and snow to become showery by the afternoon as winds the trough moves through and winds shift WNW. Mt. Baker, Paradise, and Mt. Hood can expect 3-6" of snow with 2-4" for the Cascade Passes. Snow levels around 3500 ft Monday morning should drop to 2500 ft in the afternoon, however E flow through the mountain gaps through the morning hours could keep Snoqualmie Pass all snow.

Light snow shower activity becomes very light along the west slopes of the Cascades under light NNW flow. Winds could remain in the moderate range for Mt. Hood.

On Tuesday a few weak convergence snow showers may continue in the central Washington Cascades and Mt. Hood could also pick up some very light 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
Sunday Night Clouds lowering and thickening. A chance of light rain or snow developing during the early morning hours.
Monday Light rain and snow becoming showery by late morning and tapering during the afternoon.
Sunday Night Clouds lowering and thickening. Light rain or snow developing during the early morning hours.
Monday Light to moderate rain and snow in the morning with light showers during the afternoon.
Sunday Night Clouds lowering and thickening. A chance of light rain or snow developing during the early morning hours.
Monday Light to moderate rain and snow in the morning with light showers during the afternoon.
Sunday Night Clouds lowering and thickening.
Monday Light to moderate rain and snow in the morning, becoming showery in the afternoon.
Sunday Night Clouds lowering and thickening. Light E winds at the Pass.
Monday Light rain and snow becoming showery in the afternoon. Light E winds switching W at the pass by late morning.
Sunday Night Clouds lowering and thickening. Light E winds at the Pass.
Monday Light to occasionally moderate rain and snow becoming showery in the afternoon. Light E winds switching W at the pass by late morning.
Sunday Night Clouds lowering and thickening.
Monday Light rain and snow showers.
Sunday Night Increasing clouds.
Monday Light rain and snow showers mostly closer to the Cascade Crest.
Sunday Night Clouds lowering and thickening. Strong ridgeline winds gusts developing.
Monday Light rain and snow showers mostly closer to the Cascade Crest.
Sunday Night Clouds lowering and thickening. Strong ridgeline winds developing.
Monday Moderate rain and snow. Strong ridgeline winds decreasing in the afternoon.

Issued: 2:16 PM PST Sunday, February 13, 2022

Precipitation (in)

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

Issued: 2:16 PM PST Sunday, February 13, 2022

Snow Level (ft)

Sunday Evening* Sunday Night* Monday Morning* Monday Afternoon Monday Evening Monday Night Tuesday Morning Tuesday Afternoon
Olympics 9500' 7500' 3000' 2500' 3000' 3000' 3000' 4000'
West North 9000' 6500' 3500' 2500' 3000' 3000' 3000' 3500'
West Central 9000' 6500' 3500' 3000' 2500' 2000' 2500' 3000'
West South 10000' 7000' 3500' 3000' 2500' 2500' 2500' 3500'
Stevens Pass 9000' 6000' 3000' 3000' 2500' 2500' 2500' 3500'
Snoqualmie Pass 9500' 6500' 3000' 3000' 3000' 2500' 2500' 3500'
East North 8500' 6000' 3500' 3000' 2500' 3500' 3000' 4000'
East Central 9000' 7000' 3500' 3500' 2500' 2500' 3000' 4000'
East South 10500' 8500' 4000' 3500' 2500' 3000' 3000' 4000'
Mt. Hood 11000' 9000' 4500' 3000' 2500' 2000' 2500' 3500'
Olympics Elevation
Sunday Evening* 9500'
Sunday Night* 7500'
Monday Morning* 3000'
Monday Afternoon 2500'
Monday Evening 3000'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 4000'
West North Elevation
Sunday Evening* 9000'
Sunday Night* 6500'
Monday Morning* 3500'
Monday Afternoon 2500'
Monday Evening 3000'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 3500'
West Central Elevation
Sunday Evening* 9000'
Sunday Night* 6500'
Monday Morning* 3500'
Monday Afternoon 3000'
Monday Evening 2500'
Monday Night 2000'
Tuesday Morning 2500'
Tuesday Afternoon 3000'
West South Elevation
Sunday Evening* 10000'
Sunday Night* 7000'
Monday Morning* 3500'
Monday Afternoon 3000'
Monday Evening 2500'
Monday Night 2500'
Tuesday Morning 2500'
Tuesday Afternoon 3500'
Stevens Pass Elevation
Sunday Evening* 9000'
Sunday Night* 6000'
Monday Morning* 3000'
Monday Afternoon 3000'
Monday Evening 2500'
Monday Night 2500'
Tuesday Morning 2500'
Tuesday Afternoon 3500'
Snoqualmie Pass Elevation
Sunday Evening* 9500'
Sunday Night* 6500'
Monday Morning* 3000'
Monday Afternoon 3000'
Monday Evening 3000'
Monday Night 2500'
Tuesday Morning 2500'
Tuesday Afternoon 3500'
East North Elevation
Sunday Evening* 8500'
Sunday Night* 6000'
Monday Morning* 3500'
Monday Afternoon 3000'
Monday Evening 2500'
Monday Night 3500'
Tuesday Morning 3000'
Tuesday Afternoon 4000'
East Central Elevation
Sunday Evening* 9000'
Sunday Night* 7000'
Monday Morning* 3500'
Monday Afternoon 3500'
Monday Evening 2500'
Monday Night 2500'
Tuesday Morning 3000'
Tuesday Afternoon 4000'
East South Elevation
Sunday Evening* 10500'
Sunday Night* 8500'
Monday Morning* 4000'
Monday Afternoon 3500'
Monday Evening 2500'
Monday Night 3000'
Tuesday Morning 3000'
Tuesday Afternoon 4000'
Mt. Hood Elevation
Sunday Evening* 11000'
Sunday Night* 9000'
Monday Morning* 4500'
Monday Afternoon 3000'
Monday Evening 2500'
Monday Night 2000'
Tuesday Morning 2500'
Tuesday Afternoon 3500'

Issued: 2:16 PM PST Sunday, February 13, 2022

5000' Temperatures (°F)

Sunday Night Monday
Max / Min Max / Min
Olympics 46 / 32 32 / 26
West North 37 / 32 32 / 27
West Central 43 / 34 32 / 28
West South 40 / 32 33 / 28
Stevens Pass 39 / 32 33 / 28
Snoqualmie Pass 39 / 32 33 / 28
East North 32 / 20 29 / 22
East Central 37 / 29 33 / 27
East South 41 / 30 33 / 29
Mt. Hood 43 / 33 33 / 27
Olympics 5000' Temperature Forecast
(Max / Min)
Sunday Night 46 / 32
Monday 32 / 26
West North 5000' Temperature Forecast
(Max / Min)
Sunday Night 37 / 32
Monday 32 / 27
West Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 43 / 34
Monday 32 / 28
West South 5000' Temperature Forecast
(Max / Min)
Sunday Night 40 / 32
Monday 33 / 28
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 39 / 32
Monday 33 / 28
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Sunday Night 39 / 32
Monday 33 / 28
East North 5000' Temperature Forecast
(Max / Min)
Sunday Night 32 / 20
Monday 29 / 22
East Central 5000' Temperature Forecast
(Max / Min)
Sunday Night 37 / 29
Monday 33 / 27
East South 5000' Temperature Forecast
(Max / Min)
Sunday Night 41 / 30
Monday 33 / 29
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Sunday Night 43 / 33
Monday 33 / 27

Issued: 2:16 PM PST Sunday, February 13, 2022

Ridgeline Winds (mph)

Sunday Evening Sunday Night Monday Morning Monday Afternoon
Olympics SSW 10-20 SW 15-25 WSW 10-20 WNW 5-15
West North SSW 10-20 S 20-30 S 15-25 WNW 0-10
West Central SW 5-15 SSW 10-20 SW 15-25 W 10-20
West South SW 5-15 SW 15-25 SW 15-25 WNW 10-20
Stevens Pass SW 5-15 SW 5-15 WSW 10-20 W 10-20
Snoqualmie Pass WSW 5-15 SW 5-15 WSW 10-20 WNW 10-20
East North WSW 5-15 SW 5-15 SW 5-15 W 5-15
East Central WSW 10-20 WSW 15-25 WSW 15-25 W 10-20
East South WSW 10-20 WSW 15-25 WSW 20-30 WNW 15-25
Mt. Hood WSW 20-30 SW 25-35 WSW 30-40 W 20-30
Olympics Ridgeline Winds (mph)
Sunday Evening SSW 10-20
Sunday Night SW 15-25
Monday Morning WSW 10-20
Monday Afternoon WNW 5-15
West North Ridgeline Winds (mph)
Sunday Evening SSW 10-20
Sunday Night S 20-30
Monday Morning S 15-25
Monday Afternoon WNW 0-10
West Central Ridgeline Winds (mph)
Sunday Evening SW 5-15
Sunday Night SSW 10-20
Monday Morning SW 15-25
Monday Afternoon W 10-20
West South Ridgeline Winds (mph)
Sunday Evening SW 5-15
Sunday Night SW 15-25
Monday Morning SW 15-25
Monday Afternoon WNW 10-20
Stevens Pass Ridgeline Winds (mph)
Sunday Evening SW 5-15
Sunday Night SW 5-15
Monday Morning WSW 10-20
Monday Afternoon W 10-20
Snoqualmie Pass Ridgeline Winds (mph)
Sunday Evening WSW 5-15
Sunday Night SW 5-15
Monday Morning WSW 10-20
Monday Afternoon WNW 10-20
East North Ridgeline Winds (mph)
Sunday Evening WSW 5-15
Sunday Night SW 5-15
Monday Morning SW 5-15
Monday Afternoon W 5-15
East Central Ridgeline Winds (mph)
Sunday Evening WSW 10-20
Sunday Night WSW 15-25
Monday Morning WSW 15-25
Monday Afternoon W 10-20
East South Ridgeline Winds (mph)
Sunday Evening WSW 10-20
Sunday Night WSW 15-25
Monday Morning WSW 20-30
Monday Afternoon WNW 15-25
Mt. Hood Ridgeline Winds (mph)
Sunday Evening WSW 20-30
Sunday Night SW 25-35
Monday Morning WSW 30-40
Monday Afternoon W 20-30

Issued: 2:16 PM PST Sunday, February 13, 2022

Extended Weather Synopsis

NNW flow continues through Thursday with the region caught between a ridge offshore and a trough over the central US. Expect a drying trend, but expect a few snow showers and mostly cloudy skies for the west slopes of the Cascades with mostly sunny skies further east. Temperatures should be near normal for mid February.

Extended Snow Level (ft)

Tuesday Night Wednesday Wednesday Night Thursday
West North 2000' 3000' 3500' 2500'
Snoqualmie Pass 2500' 2500' 3500' 3500'
Mt. Hood 2500' 3000' 4000' 4500'
West North Elevation
Tuesday Night 2000'
Wednesday 3000'
Wednesday Night 3500'
Thursday 2500'
Snoqualmie Pass Elevation
Tuesday Night 2500'
Wednesday 2500'
Wednesday Night 3500'
Thursday 3500'
Mt. Hood Elevation
Tuesday Night 2500'
Wednesday 3000'
Wednesday Night 4000'
Thursday 4500'

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

Previous forecast from Feb 13, 2022

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’.