Issued: 1:59 PM PST Monday, February 24, 2020
by Dennis D'Amico

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

Weather Synopsis for Monday night through Friday

Showers continue to linger in the Mt. Baker area early this afternoon but have become scattered or ended completely for other areas. Weak upper level ridging will shift over the Pacific Northwest tonight as drier and less windy conditions take over. Just as skies try to clear out tonight high clouds will begin to increase out in advance of the next approaching frontal system.  This system will flatten the upper level ridge and bring light rain and snow to the Olympics and north Cascades and possibly as far south as Snoqualmie Pass. The sky cover forecast is tricky tomorrow, but expect more sunshine for the south Washington Cascades, east slopes of the Cascades and Mt. Hood area along with milder freezing levels than areas north. 

Light shower activity along the west slopes of the Cascades should increase Tuesday night as the front pushes inland.  Showers should decrease quickly on Wednesday as upper level ridging tries to rebuild offshore. Look for a north - south differences across the forecast area once again with more sun and warmer temperatures for the south Washington Cascades and Mt. Hood area. 

Weather Forecast

Hurricane Ridge
Monday Night Mostly cloudy.
Mt. Baker
Monday Night Mostly cloudy with isolated light snow showers becoming mostly clear with areas of high clouds overnight.
Washington Pass and Leavenworth
Monday Night Partly to mostly clear.
Stevens and Snoqualmie Pass
Monday Night Mostly cloudy in the evening becoming mostly clear with areas of high clouds overnight. Moderate west winds at Pass level becoming light and variable overnight.
Mt. Rainier, Crystal and White Pass
Monday Night Partly to mostly cloudy in the evening becoming mostly clear with areas of high clouds overnight.
Mt. Hood
Monday Night Partly cloudy in the evening becoming mostly clear overnight.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Monday Evening Freezing Level 2000' 1000' 0' 0' 1000' 1000' 1000' 2500'
Monday Night Freezing Level 2500' 1000' 0' 0' 1000' 1000' 1500' 3000'
Tuesday Morning Freezing Level 4000' 1000' 1000' 1000' 1000' 1500' 3500' 5000'
Tuesday Afternoon Snow Level 5000' 3500' 2500' 3500' 3000' 4000' 5000' 6500'
Tuesday Evening Snow Level 4500' 3500' 3000' 3500' 4000' 4500' 4500' 6000'
Tuesday Night Snow Level 4000' 3500' 3000' 4000' 4000' 4500' 4500' 6000'
Wednesday Morning Snow Level 3000' 3500' 3500' 3500' 3000' 3000' 4000' 6000'
Hurricane Ridge Elevation
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
2500'
Tuesday Morning Freezing Level
4000'
Tuesday Afternoon Snow Level
5000'
Tuesday Evening Snow Level
4500'
Tuesday Night Snow Level
4000'
Wednesday Morning Snow Level
3000'
Wednesday Afternoon Snow Level
3000'
Mt. Baker Elevation
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
Tuesday Afternoon Snow Level
3500'
Tuesday Evening Snow Level
3500'
Tuesday Night Snow Level
3500'
Wednesday Morning Snow Level
3500'
Wednesday Afternoon Snow Level
3000'
Washington Pass Elevation
Monday Evening Freezing Level
0'
Monday Night Freezing Level
0'
Tuesday Morning Freezing Level
1000'
Tuesday Afternoon Snow Level
2500'
Tuesday Evening Snow Level
3000'
Tuesday Night Snow Level
3000'
Wednesday Morning Snow Level
3500'
Wednesday Afternoon Snow Level
3500'
Leavenworth Elevation
Monday Evening Freezing Level
0'
Monday Night Freezing Level
0'
Tuesday Morning Freezing Level
1000'
Tuesday Afternoon Snow Level
3500'
Tuesday Evening Snow Level
3500'
Tuesday Night Snow Level
4000'
Wednesday Morning Snow Level
3500'
Wednesday Afternoon Snow Level
3500'
Stevens Pass Elevation
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
Tuesday Afternoon Snow Level
3000'
Tuesday Evening Snow Level
4000'
Tuesday Night Snow Level
4000'
Wednesday Morning Snow Level
3000'
Wednesday Afternoon Snow Level
3000'
Snoqualmie Pass Elevation
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1500'
Tuesday Afternoon Snow Level
4000'
Tuesday Evening Snow Level
4500'
Tuesday Night Snow Level
4500'
Wednesday Morning Snow Level
3000'
Wednesday Afternoon Snow Level
3000'
Mt. Rainier & Crystal Elevation
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
1500'
Tuesday Morning Freezing Level
3500'
Tuesday Afternoon Snow Level
5000'
Tuesday Evening Snow Level
4500'
Tuesday Night Snow Level
4500'
Wednesday Morning Snow Level
4000'
Wednesday Afternoon Snow Level
4000'
Mt. Hood Elevation
Monday Evening Freezing Level
2500'
Monday Night Freezing Level
3000'
Tuesday Morning Freezing Level
5000'
Tuesday Afternoon Snow Level
6500'
Tuesday Evening Snow Level
6000'
Tuesday Night Snow Level
6000'
Wednesday Morning Snow Level
6000'
Wednesday Afternoon Snow Level
6000'

* 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

Monday Night Friday Friday Night Friday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 LT 0.10 LT 0.10 LT 0.10
Mt Baker Ski Area 0 LT 0.10 LT 0.25 LT 0.10
Washington Pass 0 LT 0.10 LT 0.10 0
Leavenworth 0 0 0 0
Stevens Pass 0 LT 0.10 LT 0.25 LT 0.10
Snoqualmie Pass 0 0 LT 0.25 LT 0.10
Mission Ridge 0 0 0 0
Crystal Mt 0 0 0 0
Paradise 0 0 LT 0.10 0
White Pass 0 0 0 0
Mt Hood Meadows 0 0 0 0
0 0 0 0
Hurricane Ridge Precipitation Forecast
Monday Night 0
Friday LT 0.10
Friday Night LT 0.10
Friday LT 0.10
Mt Baker Ski Area Precipitation Forecast
Monday Night 0
Friday LT 0.10
Friday Night LT 0.25
Friday LT 0.10
Washington Pass Precipitation Forecast
Monday Night 0
Friday LT 0.10
Friday Night LT 0.10
Friday 0
Leavenworth Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0
Stevens Pass Precipitation Forecast
Monday Night 0
Friday LT 0.10
Friday Night LT 0.25
Friday LT 0.10
Snoqualmie Pass Precipitation Forecast
Monday Night 0
Friday 0
Friday Night LT 0.25
Friday LT 0.10
Mission Ridge Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0
Crystal Mt Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0
Paradise Precipitation Forecast
Monday Night 0
Friday 0
Friday Night LT 0.10
Friday 0
White Pass Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0
Mt Hood Meadows Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0
Timberline Precipitation Forecast
Monday Night 0
Friday 0
Friday Night 0
Friday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Monday Evening W 0 - 10 SW 0 - 10 NW 5 - 15 WNW 5 - 15 NW 5 - 15
Monday Night W 0 - 10 SW 0 - 10 NW 0 - 10 W 0 - 10 W 0 - 10
Tuesday Morning SW 5 - 15 SW 5 - 15 W 5 - 15 SW 0 - 10 W 0 - 10
Hurricane Ridge Elevation
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning SW 5 - 15
Tuesday Afternoon SW 10 - 20
Mt. Baker Elevation
Monday Evening SW 0 - 10
Monday Night SW 0 - 10
Tuesday Morning SW 5 - 15
Tuesday Afternoon SW 10 - 20
Stevens and Snoqualmie Pass Elevation
Monday Evening NW 5 - 15
Monday Night NW 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 5 - 15
Mt. Rainier Elevation
Monday Evening WNW 5 - 15
Monday Night W 0 - 10
Tuesday Morning SW 0 - 10
Tuesday Afternoon SW 5 - 15
Mt. Hood Elevation
Monday Evening NW 5 - 15
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 5 - 15
Hurricane Ridge Direction - Speed
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning SW 5 - 15
Tuesday Afternoon SW 10 - 20
Mt. Baker Direction - Speed
Monday Evening SW 0 - 10
Monday Night SW 0 - 10
Tuesday Morning SW 5 - 15
Tuesday Afternoon SW 10 - 20
Stevens and Snoqualmie Pass Direction - Speed
Monday Evening NW 5 - 15
Monday Night NW 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 5 - 15
Mt. Rainier Direction - Speed
Monday Evening WNW 5 - 15
Monday Night W 0 - 10
Tuesday Morning SW 0 - 10
Tuesday Afternoon SW 5 - 15
Mt. Hood Direction - Speed
Monday Evening NW 5 - 15
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday 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
Monday Evening NW 30 - 40 NW 20 - 30 NW 40 - 50 NW 35 - 45 NW 25 - 35
Monday Night NW 20 - 30 NW 15 - 25 NW 30 - 40 NW 20 - 30 NW 20 - 30
Tuesday Morning W 15 - 25 W 15 - 25 NW 20 - 30 NW 15 - 25 NW 15 - 25
Mt. Baker Direction - Speed
Monday Evening NW 30 - 40
Monday Night NW 20 - 30
Tuesday Morning W 15 - 25
Tuesday Afternoon W 20 - 30
Washington Pass Direction - Speed
Monday Evening NW 20 - 30
Monday Night NW 15 - 25
Tuesday Morning W 15 - 25
Tuesday Afternoon W 20 - 30
Stevens and Snoqualmie Pass Direction - Speed
Monday Evening NW 40 - 50
Monday Night NW 30 - 40
Tuesday Morning NW 20 - 30
Tuesday Afternoon W 25 - 35
Mt. Rainier Direction - Speed
Monday Evening NW 35 - 45
Monday Night NW 20 - 30
Tuesday Morning NW 15 - 25
Tuesday Afternoon WNW 25 - 35
Mt. Hood Direction - Speed
Monday Evening NW 25 - 35
Monday Night NW 20 - 30
Tuesday Morning NW 15 - 25
Tuesday Afternoon WNW 20 - 30

Extended Weather Synopsis for Friday night through Friday

Upper level ridging and high pressure will take control on Thursday and Friday with milder air moving into the region. The real question is how much cloud cover slips under the ridge (dirty ridging) as the storm track is pushed further north. Either way, look for freezing levels to be on the rise toward the end of the week with the next frontal system set to arrive over the weekend. 

Extended Snow/Freezing Levels

Mt. Baker Snoqualmie Pass Mt. Hood Easterly Flow *
Wednesday Night Freezing Level 2000' - 3000' 2500' - 3000' 6500' - 7500'
Thursday Freezing Level 3500' - 4500' 4500' - 5500' 7500' - 8500'
Thursday Night Freezing Level 4500' - 5500' 6500' - 7500' 8000' - 9000'
Mt. Baker Elevation
Wednesday Night Freezing Level
2000' - 3000'
Thursday Freezing Level
3500' - 4500'
Thursday Night Freezing Level
4500' - 5500'
Friday Freezing Level
5000' - 6000'
Snoqualmie Pass Elevation
Wednesday Night Freezing Level
2500' - 3000'
Thursday Freezing Level
4500' - 5500'
Thursday Night Freezing Level
6500' - 7500'
Friday Freezing Level
5500' - 6500'
Mt. Hood Elevation
Wednesday Night Freezing Level
6500' - 7500'
Thursday Freezing Level
7500' - 8500'
Thursday Night Freezing Level
8000' - 9000'
Friday Freezing Level
8500' - 9500'

* 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.

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

Previous forecast from Feb 24, 2020

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.