menu

Mountain Weather Forecast

Issued: 6:57 AM PST Monday, February 18, 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 Monday & Tuesday

The Pacific Northwest is in for a day of cool freezing levels and fair weather with an upper level shortwave ridge currently upstream and moving toward the region in northerly flow aloft. We are on the backside of the very broad upper trough that is carved out over the southwest U.S.  

While low level clouds should remain trapped along the west slopes of the Cascades and Mt. Hood today due to upper level subsidence trapping low level moisture, there should be a fair bit of sunbreaks also mixed in. Sunnier skies can be expected for the Olympics and east slopes of the Cascades. 

A quick moving weather system in NW flow aloft will quickly approach the region Monday night, with light snow developing late Tuesday morning for most areas. While light snowfall will increase during the day, moderate snowfall from this system looks likely to hold off until late Tuesday afternoon and evening. 

Weather Forecast

Hurricane Ridge
Partly to mostly sunny, becoming mostly cloudy in the afternoon with the chance of light snow showers.
Mt. Baker
Partly to mostly sunny, becoming mostly cloudy in the afternoon with the chance of light snow showers.
Washington Pass and Leavenworth
Partly to mostly sunny. Becoming mostly cloudy higher terrain in the afternoon.
Stevens and Snoqualmie Pass
Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers. Light and variable winds in the Passes becoming west in the afternoon.
Mt. Rainier, Crystal and White Pass
Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers.
Mt. Hood
Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers.

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Monday Morning Freezing Level 1500' 0' 0' 0' 500' 500' 1000' 1500'
Monday Afternoon Freezing Level 1500' 1500' 1500' 2500' 2000' 2000' 3000' 3000'
Monday Evening Freezing Level 2000' 1000' 1000' 1000' 1500' 1500' 2000' 2000'
Monday Night Freezing Level 1000' 0' 0' 0' 500' 500' 1000' 1000'
Tuesday Morning Snow Level 500' 0' 0' 0' 500' 500' 500' 1000'
Hurricane Ridge Elevation
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
1500'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Snow Level
500'
Tuesday Afternoon Snow Level
2000'
Mt. Baker Elevation
Monday Morning Freezing Level
0'
Monday Afternoon Freezing Level
1500'
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
1500'
Washington Pass Elevation
Monday Morning Freezing Level
0'
Monday Afternoon Freezing Level
1500'
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
1000'
Leavenworth Elevation
Monday Morning Freezing Level
0'
Monday Afternoon Freezing Level
2500'
Monday Evening Freezing Level
1000'
Monday Night Freezing Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
1000'
Stevens Pass Elevation
Monday Morning Freezing Level
500'
Monday Afternoon Freezing Level
2000'
Monday Evening Freezing Level
1500'
Monday Night Freezing Level
500'
Tuesday Morning Snow Level
500'
Tuesday Afternoon Snow Level
1500'
Snoqualmie Pass Elevation
Monday Morning Freezing Level
500'
Monday Afternoon Freezing Level
2000'
Monday Evening Freezing Level
1500'
Monday Night Freezing Level
500'
Tuesday Morning Snow Level
500'
Tuesday Afternoon Snow Level
1500'
Mt. Rainier & Crystal Elevation
Monday Morning Freezing Level
1000'
Monday Afternoon Freezing Level
3000'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Snow Level
500'
Tuesday Afternoon Snow Level
2000'
Mt. Hood Elevation
Monday Morning Freezing Level
1500'
Monday Afternoon Freezing Level
3000'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Snow Level
1000'
Tuesday Afternoon Snow Level
2000'

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

Free Winds at 5000' (mph)

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

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 Morning NW 10 - 20 NW 15 - 25 NW 20 - 30 NW 20 - 30 NW 20 - 30
Monday Afternoon NW 15 - 25 NW 20 - 30 NW 20 - 30 NW 20 - 30 NW 20 - 30
Monday Evening NW 10 - 20 NW 20 - 30 NW 20 - 30 NW 20 - 30 NW 20 - 30
Monday Night WSW 10 - 20 NW 10 - 20 NW 25 - 35 NW 25 - 35 NW 20 - 30
Tuesday Morning W 10 - 20 W 10 - 20 NW 25 - 35 NW 20 - 30 NW 30 - 40
Mt. Baker Direction - Speed
Monday Morning NW 10 - 20
Monday Afternoon NW 15 - 25
Monday Evening NW 10 - 20
Monday Night WSW 10 - 20
Tuesday Morning W 10 - 20
Tuesday Afternoon W 20 - 30
Washington Pass Direction - Speed
Monday Morning NW 15 - 25
Monday Afternoon NW 20 - 30
Monday Evening NW 20 - 30
Monday Night NW 10 - 20
Tuesday Morning W 10 - 20
Tuesday Afternoon W 20 - 30
Stevens and Snoqualmie Pass Direction - Speed
Monday Morning NW 20 - 30
Monday Afternoon NW 20 - 30
Monday Evening NW 20 - 30
Monday Night NW 25 - 35
Tuesday Morning NW 25 - 35
Tuesday Afternoon WNW 30 - 40
Mt. Rainier Direction - Speed
Monday Morning NW 20 - 30
Monday Afternoon NW 20 - 30
Monday Evening NW 20 - 30
Monday Night NW 25 - 35
Tuesday Morning NW 20 - 30
Tuesday Afternoon W 25 - 35
Mt. Hood Direction - Speed
Monday Morning NW 20 - 30
Monday Afternoon NW 20 - 30
Monday Evening NW 20 - 30
Monday Night NW 20 - 30
Tuesday Morning NW 30 - 40
Tuesday Afternoon WNW 30 - 40

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

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.