Issued: 6:47 AM PST Sunday, January 20, 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 Sunday & Friday

A weak low pressure system traversing across Oregon will bring light snow to the Mt. Hood area today. The northern fringe of the precipitation will reach to Stevens Pass but should not amount to much in the way of accumulations for the Washington Cascades.  As the system pulls to the east later today, the cloud shield of high and mid overcast should thin for the Olympics and north Cascades. 

Light snow and rain will come to an end for the south Washington Cascades and Mt. Hood this evening with dry and fair weather forecast on Monday. High pressure building offshore around 135W will flop into southern B.C Monday. The increasing subsidence aloft combinded with weak onshore flow at the surface should trap some moisture and low clouds below Cascade crest level along the west slopes of the Cascades. Sunnier skies are likely along the east slopes of the Cascades Monday. Freezing levels will be relatively cooler on Monday.  

Weather Forecast

Hurricane Ridge
Mt. Baker
Washington Pass and Leavenworth
Stevens and Snoqualmie Pass
Mt. Rainier, Crystal and White Pass
Mt. Hood

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Sunday Morning Snow Level 2500' 2000' 1500' 2000' 2500' 2500' 3000' 3000'
Sunday Afternoon Snow Level 3000' 2500' 2500' 2500' 3000' 3000' 3500' 3500'
Sunday Evening Snow Level 2500' 2000' 1500' 2500' 2500' 2500' 3000' 3000'
Sunday Night Freezing Level 1500' 1000' 500' 1000' 1500' 1500' 1500' 1500'
Monday Morning Freezing Level 1500' 1000' 500' 1000' 1500' 1500' 1500' 1500'
Hurricane Ridge Elevation
Sunday Morning Snow Level
2500'
Sunday Afternoon Snow Level
3000'
Sunday Evening Snow Level
2500'
Sunday Night Freezing Level
1500'
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
2500'
Mt. Baker Elevation
Sunday Morning Snow Level
2000'
Sunday Afternoon Snow Level
2500'
Sunday Evening Snow Level
2000'
Sunday Night Freezing Level
1000'
Monday Morning Freezing Level
1000'
Monday Afternoon Freezing Level
2000'
Washington Pass Elevation
Sunday Morning Snow Level
1500'
Sunday Afternoon Snow Level
2500'
Sunday Evening Snow Level
1500'
Sunday Night Freezing Level
500'
Monday Morning Freezing Level
500'
Monday Afternoon Freezing Level
2000'
Leavenworth Elevation
Sunday Morning Snow Level
2000'
Sunday Afternoon Snow Level
2500'
Sunday Evening Snow Level
2500'
Sunday Night Freezing Level
1000'
Monday Morning Freezing Level
1000'
Monday Afternoon Freezing Level
2000'
Stevens Pass Elevation
Sunday Morning Snow Level
2500'
Sunday Afternoon Snow Level
3000'
Sunday Evening Snow Level
2500'
Sunday Night Freezing Level
1500'
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
2000'
Snoqualmie Pass Elevation
Sunday Morning Snow Level
2500'
Sunday Afternoon Snow Level
3000'
Sunday Evening Snow Level
2500'
Sunday Night Freezing Level
1500'
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
2000'
Mt. Rainier & Crystal Elevation
Sunday Morning Snow Level
3000'
Sunday Afternoon Snow Level
3500'
Sunday Evening Snow Level
3000'
Sunday Night Freezing Level
1500'
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
2500'
Mt. Hood Elevation
Sunday Morning Snow Level
3000'
Sunday Afternoon Snow Level
3500'
Sunday Evening Snow Level
3000'
Sunday Night Freezing Level
1500'
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
2500'

* 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

Sunday Sunday Night Friday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area 0 0 0
Washington Pass 0 0 0
Leavenworth 0 0 0
Stevens Pass 0 0 0
Snoqualmie Pass 0 0 0
Mission Ridge LT 0.10 0 0
Crystal Mt LT 0.10 0 0
Paradise LT 0.10 0 0
White Pass LT 0.25 LT 0.10 0
Mt Hood Meadows 0.25 - 0.50 LT 0.10 0
0.25 - 0.50 LT 0.10 0
Hurricane Ridge Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Mt Baker Ski Area Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Washington Pass Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Leavenworth Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Stevens Pass Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Snoqualmie Pass Precipitation Forecast
Sunday 0
Sunday Night 0
Friday 0
Mission Ridge Precipitation Forecast
Sunday LT 0.10
Sunday Night 0
Friday 0
Crystal Mt Precipitation Forecast
Sunday LT 0.10
Sunday Night 0
Friday 0
Paradise Precipitation Forecast
Sunday LT 0.10
Sunday Night 0
Friday 0
White Pass Precipitation Forecast
Sunday LT 0.25
Sunday Night LT 0.10
Friday 0
Mt Hood Meadows Precipitation Forecast
Sunday 0.25 - 0.50
Sunday Night LT 0.10
Friday 0
Timberline Precipitation Forecast
Sunday 0.25 - 0.50
Sunday Night LT 0.10
Friday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Sunday Morning NE 0 - 10 N 0 - 10 NE 0 - 10 NE 0 - 10 NE 10 - 20
Sunday Afternoon NW 0 - 10 N 0 - 10 VAR 0 - 10 VAR 0 - 10 VAR 0 - 10
Sunday Evening NW 0 - 10 NW 0 - 10 NW 0 - 10 NW 0 - 10 NW 5 - 15
Sunday Night NW 5 - 15 NW 0 - 10 NW 5 - 15 NW 5 - 15 NW 10 - 20
Monday Morning NW 0 - 10 NW 0 - 10 NW 0 - 10 NW 5 - 15 NW 15 - 25
Hurricane Ridge Elevation
Sunday Morning NE 0 - 10
Sunday Afternoon NW 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 0 - 10
Monday Afternoon W 0 - 10
Mt. Baker Elevation
Sunday Morning N 0 - 10
Sunday Afternoon N 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 0 - 10
Monday Morning NW 0 - 10
Monday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Elevation
Sunday Morning NE 0 - 10
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 0 - 10
Monday Afternoon W 5 - 15
Mt. Rainier Elevation
Sunday Morning NE 0 - 10
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 5 - 15
Monday Afternoon WNW 5 - 15
Mt. Hood Elevation
Sunday Morning NE 10 - 20
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 5 - 15
Sunday Night NW 10 - 20
Monday Morning NW 15 - 25
Monday Afternoon WNW 15 - 30
Hurricane Ridge Direction - Speed
Sunday Morning NE 0 - 10
Sunday Afternoon NW 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 0 - 10
Monday Afternoon W 0 - 10
Mt. Baker Direction - Speed
Sunday Morning N 0 - 10
Sunday Afternoon N 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 0 - 10
Monday Morning NW 0 - 10
Monday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Sunday Morning NE 0 - 10
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 0 - 10
Monday Afternoon W 5 - 15
Mt. Rainier Direction - Speed
Sunday Morning NE 0 - 10
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 0 - 10
Sunday Night NW 5 - 15
Monday Morning NW 5 - 15
Monday Afternoon WNW 5 - 15
Mt. Hood Direction - Speed
Sunday Morning NE 10 - 20
Sunday Afternoon VAR 0 - 10
Sunday Evening NW 5 - 15
Sunday Night NW 10 - 20
Monday Morning NW 15 - 25
Monday Afternoon WNW 15 - 30

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
Sunday Morning VAR 0 - 10 VAR 0 - 10 VAR 0 - 10 VAR 0 - 10 S 10 - 20
Sunday Afternoon NW 5 - 15 NW 5 - 15 NW 10 - 20 NW 5 - 15 WSW 15 - 25
Sunday Evening NW 5 - 15 NW 10 - 20 NW 15 - 25 NW 10 - 20 NW 10 - 20
Sunday Night NW 10 - 20 NW 10 - 20 NW 20 - 30 NW 20 - 30 NW 20 - 30
Monday Morning NW 10 - 20 NW 15 - 25 NW 20 - 30 NW 20 - 30 NW 25 - 35
Mt. Baker Direction - Speed
Sunday Morning VAR 0 - 10
Sunday Afternoon NW 5 - 15
Sunday Evening NW 5 - 15
Sunday Night NW 10 - 20
Monday Morning NW 10 - 20
Monday Afternoon NW 10 - 20
Washington Pass Direction - Speed
Sunday Morning VAR 0 - 10
Sunday Afternoon NW 5 - 15
Sunday Evening NW 10 - 20
Sunday Night NW 10 - 20
Monday Morning NW 15 - 25
Monday Afternoon NW 15 - 25
Stevens and Snoqualmie Pass Direction - Speed
Sunday Morning VAR 0 - 10
Sunday Afternoon NW 10 - 20
Sunday Evening NW 15 - 25
Sunday Night NW 20 - 30
Monday Morning NW 20 - 30
Monday Afternoon NW 15 - 25
Mt. Rainier Direction - Speed
Sunday Morning VAR 0 - 10
Sunday Afternoon NW 5 - 15
Sunday Evening NW 10 - 20
Sunday Night NW 20 - 30
Monday Morning NW 20 - 30
Monday Afternoon NW 20 - 30
Mt. Hood Direction - Speed
Sunday Morning S 10 - 20
Sunday Afternoon WSW 15 - 25
Sunday Evening NW 10 - 20
Sunday Night NW 20 - 30
Monday Morning NW 25 - 35
Monday Afternoon NW 25 - 35

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 Jan 19, 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.