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Mountain Weather Forecast

Issued: 7:08 AM PST Friday, March 22, 2019
by Dennis D'Amico

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

Weather Synopsis for Friday & Saturday

Some leftover high cloud from the upper low that passed to our south will linger over much of the Cascades this morning before thinning mid-day. Areas of low clouds and fog as seen in the Stevens Pass area should not stick around long this morning. A negatively tilted frontal band extending from a low pressure in the Gulf of Alaska is slowly approaching the Washington coast this morning. The slow progression of the front should allow the Cascades to have an extended window of partly to mostly sunny skies through the early afternoon. The Olympics and Mt. Hood will see more clouds, a quicker cool down and the onset of light rain and snow in the afternoon. Winds will increase in the afternoon for these areas as well as for Mt. Baker. 

The front will weaken as it passes through the Cascades this evening with pretty unimpressive precipitation totals expected overnight. Showers should diminish quickly after midnight. The one exception will the Mt. Baker area where a modest half inch of water or so is expected overnight in post-frontal showers. The front will usher in much cooler air and we should see widespread temperatures below freezing for the first time in over a week.

Weak longwave troughing will remain over the area Saturday along with onshore (westerly flow) at the surface. This should translate to slowly building cumulus in the afternoon with a chance of showers mainly for the Cascade Passes, west slopes and Olympics and more sun for the east slopes of the Cascades. 

Weather Forecast

Hurricane Ridge
Partly sunny becoming cloudy mid-day with light rain and snow developing in the afternoon. Winds increasing in the afternoon.
Mt. Baker
Partly sunny and mild through midday, then becoming cloudy in the afternoon with a chance of showers. Winds increasing in the afternoon.
Washington Pass and Leavenworth
Partly sunny and mild through early afternoon, then becoming cloudy late in the afternoon.
Stevens and Snoqualmie Pass
Partly sunny and mild through midday, then becoming cloudy in the afternoon with a chance of showers. West wind in the Passes increasing late in the afternoon.
Mt. Rainier, Crystal and White Pass
Partly sunny and mild through midday, then becoming cloudy in the afternoon with a chance of showers.
Mt. Hood
Partly sunny becoming cloudy mid-day with light rain and snow developing in the afternoon. Winds increasing in the afternoon.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Friday Morning Freezing Level 6500' 7500' 8000' 8000' 8000' 7500' 7500' 7000'
Friday Afternoon Snow Level 5500' 6000' 6500' 6500' 6500' 6000' 6000' 5500'
Friday Evening Snow Level 4000' 5000' 6000' 6000' 5000' 5000' 4500' 4500'
Friday Night Snow Level 4000' 4000' 4000' 4000' 4000' 4000' 4000' 4000'
Saturday Morning Snow Level 3500' 3500' 3500' 3500' 3500' 3500' 3500' 3500'
Hurricane Ridge Elevation
Friday Morning Freezing Level
6500'
Friday Afternoon Snow Level
5500'
Friday Evening Snow Level
4000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4000'
Mt. Baker Elevation
Friday Morning Freezing Level
7500'
Friday Afternoon Snow Level
6000'
Friday Evening Snow Level
5000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4500'
Washington Pass Elevation
Friday Morning Freezing Level
8000'
Friday Afternoon Snow Level
6500'
Friday Evening Snow Level
6000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
5000'
Leavenworth Elevation
Friday Morning Freezing Level
8000'
Friday Afternoon Snow Level
6500'
Friday Evening Snow Level
6000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
5000'
Stevens Pass Elevation
Friday Morning Freezing Level
8000'
Friday Afternoon Snow Level
6500'
Friday Evening Snow Level
5000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4500'
Snoqualmie Pass Elevation
Friday Morning Freezing Level
7500'
Friday Afternoon Snow Level
6000'
Friday Evening Snow Level
5000'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4500'
Mt. Rainier & Crystal Elevation
Friday Morning Freezing Level
7500'
Friday Afternoon Snow Level
6000'
Friday Evening Snow Level
4500'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4500'
Mt. Hood Elevation
Friday Morning Freezing Level
7000'
Friday Afternoon Snow Level
5500'
Friday Evening Snow Level
4500'
Friday Night Snow Level
4000'
Saturday Morning Snow Level
3500'
Saturday Afternoon Snow Level
4500'

* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.

Precipitation Forecast

Friday Friday Night Saturday
5 am - 5 pm 5 pm - 5 am 5 am - 5 pm
Hurricane Ridge LT 0.10 LT 0.10 LT 0.10
Mt Baker Ski Area LT 0.10 0.50 LT 0.10
Washington Pass 0 LT 0.10 0
Leavenworth 0 LT 0.10 0
Stevens Pass LT 0.10 LT 0.25 LT 0.10
Snoqualmie Pass LT 0.10 LT 0.25 LT 0.10
Mission Ridge 0 LT 0.10 0
Crystal Mt LT 0.10 LT 0.10 LT 0.10
Paradise LT 0.10 LT 0.25 LT 0.10
White Pass LT 0.10 LT 0.10 LT 0.10
Mt Hood Meadows LT 0.25 LT 0.10 LT 0.10
LT 0.25 LT 0.25 LT 0.10
Hurricane Ridge Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.10
Saturday LT 0.10
Mt Baker Ski Area Precipitation Forecast
Friday LT 0.10
Friday Night 0.50
Saturday LT 0.10
Washington Pass Precipitation Forecast
Friday 0
Friday Night LT 0.10
Saturday 0
Leavenworth Precipitation Forecast
Friday 0
Friday Night LT 0.10
Saturday 0
Stevens Pass Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.25
Saturday LT 0.10
Snoqualmie Pass Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.25
Saturday LT 0.10
Mission Ridge Precipitation Forecast
Friday 0
Friday Night LT 0.10
Saturday 0
Crystal Mt Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.10
Saturday LT 0.10
Paradise Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.25
Saturday LT 0.10
White Pass Precipitation Forecast
Friday LT 0.10
Friday Night LT 0.10
Saturday LT 0.10
Mt Hood Meadows Precipitation Forecast
Friday LT 0.25
Friday Night LT 0.10
Saturday LT 0.10
Timberline Precipitation Forecast
Friday LT 0.25
Friday Night LT 0.25
Saturday LT 0.10

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Friday Morning S 10 - 20 S 5 - 15 VAR 0 - 10 S 0 - 10 SW 5 - 15
Friday Afternoon S 15 - 30 S 15 - 25 WSW 10 - 20 SW 10 - 20 SW 10 - 20
Friday Evening SW 10 - 20 SSW 15 - 30 WSW 15 - 25 SW 10 - 20 SW 10 - 20
Friday Night SW 5 - 15 SW 5 - 15 WSW 5 - 15 SW 5 - 15 SW 10 - 20
Saturday Morning S 0 - 10 S 0 - 10 SW 0 - 10 SW 0 - 10 SW 5 - 15
Hurricane Ridge Elevation
Friday Morning S 10 - 20
Friday Afternoon S 15 - 30
Friday Evening SW 10 - 20
Friday Night SW 5 - 15
Saturday Morning S 0 - 10
Saturday Afternoon S 0 - 10
Mt. Baker Elevation
Friday Morning S 5 - 15
Friday Afternoon S 15 - 25
Friday Evening SSW 15 - 30
Friday Night SW 5 - 15
Saturday Morning S 0 - 10
Saturday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Elevation
Friday Morning VAR 0 - 10
Friday Afternoon WSW 10 - 20
Friday Evening WSW 15 - 25
Friday Night WSW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 0 - 10
Mt. Rainier Elevation
Friday Morning S 0 - 10
Friday Afternoon SW 10 - 20
Friday Evening SW 10 - 20
Friday Night SW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 0 - 10
Mt. Hood Elevation
Friday Morning SW 5 - 15
Friday Afternoon SW 10 - 20
Friday Evening SW 10 - 20
Friday Night SW 10 - 20
Saturday Morning SW 5 - 15
Saturday Afternoon W 5 - 15
Hurricane Ridge Direction - Speed
Friday Morning S 10 - 20
Friday Afternoon S 15 - 30
Friday Evening SW 10 - 20
Friday Night SW 5 - 15
Saturday Morning S 0 - 10
Saturday Afternoon S 0 - 10
Mt. Baker Direction - Speed
Friday Morning S 5 - 15
Friday Afternoon S 15 - 25
Friday Evening SSW 15 - 30
Friday Night SW 5 - 15
Saturday Morning S 0 - 10
Saturday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Friday Morning VAR 0 - 10
Friday Afternoon WSW 10 - 20
Friday Evening WSW 15 - 25
Friday Night WSW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 0 - 10
Mt. Rainier Direction - Speed
Friday Morning S 0 - 10
Friday Afternoon SW 10 - 20
Friday Evening SW 10 - 20
Friday Night SW 5 - 15
Saturday Morning SW 0 - 10
Saturday Afternoon SW 0 - 10
Mt. Hood Direction - Speed
Friday Morning SW 5 - 15
Friday Afternoon SW 10 - 20
Friday Evening SW 10 - 20
Friday Night SW 10 - 20
Saturday Morning SW 5 - 15
Saturday Afternoon W 5 - 15

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.

Free Winds at 9000' (mph)

Mt. Baker Washington Pass Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Friday Morning S 10 - 20 S 5 - 15 SE 10 - 20 SE 10 - 20 S 10 - 20
Friday Afternoon S 20 - 30 S 10 - 20 S 15 - 25 S 15 - 30 SW 20 - 30
Friday Evening SSW 20 - 30 SW 5 - 15 SW 10 - 20 SW 10 - 20 SW 20 - 30
Friday Night SW 10 - 20 SW 5 - 15 SW 15 - 25 SW 15 - 25 SW 15 - 25
Saturday Morning SW 0 - 10 S 0 - 10 SW 5 - 15 SW 5 - 15 SW 10 - 20
Mt. Baker Direction - Speed
Friday Morning S 10 - 20
Friday Afternoon S 20 - 30
Friday Evening SSW 20 - 30
Friday Night SW 10 - 20
Saturday Morning SW 0 - 10
Saturday Afternoon S 0 - 10
Washington Pass Direction - Speed
Friday Morning S 5 - 15
Friday Afternoon S 10 - 20
Friday Evening SW 5 - 15
Friday Night SW 5 - 15
Saturday Morning S 0 - 10
Saturday Afternoon S 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Friday Morning SE 10 - 20
Friday Afternoon S 15 - 25
Friday Evening SW 10 - 20
Friday Night SW 15 - 25
Saturday Morning SW 5 - 15
Saturday Afternoon SW 0 - 10
Mt. Rainier Direction - Speed
Friday Morning SE 10 - 20
Friday Afternoon S 15 - 30
Friday Evening SW 10 - 20
Friday Night SW 15 - 25
Saturday Morning SW 5 - 15
Saturday Afternoon SW 0 - 10
Mt. Hood Direction - Speed
Friday Morning S 10 - 20
Friday Afternoon SW 20 - 30
Friday Evening SW 20 - 30
Friday Night SW 15 - 25
Saturday Morning SW 10 - 20
Saturday Afternoon SW 5 - 15

Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

Previous forecast from March 21, 2019

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.