Issued: 6:57 AM PST Tuesday, January 29, 2019
by Robert Hahn

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

Weather Synopsis for Tuesday & Wednesday

The ridge of high pressure continues to dominate the weather with the ridge axis just offshore. A pool of cold air up to 5000-6000 feet sits east of the Cascade Crest and a moderate and gradually weakening easterly pressure gradient is pushing this cold air through the mountain gaps. This has set up a strong inversion at places like Washington Pass this morning. West of the Cascade Crest, temperatures are generally mild. Sunshine throughout the day will warm temperatures. 

Tuesday night, a cutoff low well offshore heads ESE towards northern California with quiescent weather remaining over our region. The easterly gradient continues to weaken and associated easterly flow through the mountain gaps will become light. More fog is anticipated tonight and tomorrow morning with very little wind to mix the atmosphere.

On Wednesday, there is little change to the overall weather pattern in our region, but the ridge is gradually breaking down with moisture spilling over the top in central British Columbia and to the south as the cutoff low continues to head south. Expect generally mostly clear skies in the mountains, light alpine winds, and very light easterly flow.

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
Tuesday Morning Freezing Level * 8500' 7000' 0' 0' 8000' 8000' 8000' 9000'
Tuesday Afternoon Freezing Level * 9000' 7500' 0' 4000' 8000' 8000' 8000' 9500'
Tuesday Evening Freezing Level * 9000' 7500' 0' 0' 8500' 8500' 8500' 9500'
Tuesday Night Freezing Level * 8500' 7000' 0' 8500' 8500' 8500' 8500' 9000'
Wednesday Morning Freezing Level * 8500' 7000' 7000' 7500' 8000' 8000' 8000' 9000'
Hurricane Ridge Elevation
Tuesday Morning Freezing Level
8500'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
9000'
(Easterly Flow *)
Tuesday Evening Freezing Level
9000'
(Easterly Flow *)
Tuesday Night Freezing Level
8500'
(Easterly Flow *)
Wednesday Morning Freezing Level
8500'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
9000'
(Easterly Flow *)
Mt. Baker Elevation
Tuesday Morning Freezing Level
7000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
7500'
(Easterly Flow *)
Tuesday Evening Freezing Level
7500'
(Easterly Flow *)
Tuesday Night Freezing Level
7000'
(Easterly Flow *)
Wednesday Morning Freezing Level
7000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
8000'
(Easterly Flow *)
Washington Pass Elevation
Tuesday Morning Freezing Level
0'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
0'
(Easterly Flow *)
Tuesday Evening Freezing Level
0'
(Easterly Flow *)
Tuesday Night Freezing Level
0'
(Easterly Flow *)
Wednesday Morning Freezing Level
7000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
8000'
(Easterly Flow *)
Leavenworth Elevation
Tuesday Morning Freezing Level
0'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
4000'
(Easterly Flow *)
Tuesday Evening Freezing Level
0'
(Easterly Flow *)
Tuesday Night Freezing Level
8500'
(Easterly Flow *)
Wednesday Morning Freezing Level
7500'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
9000'
(Easterly Flow *)
Stevens Pass Elevation
Tuesday Morning Freezing Level
8000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
8000'
(Easterly Flow *)
Tuesday Evening Freezing Level
8500'
(Easterly Flow *)
Tuesday Night Freezing Level
8500'
(Easterly Flow *)
Wednesday Morning Freezing Level
8000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
9'
(Easterly Flow *)
Snoqualmie Pass Elevation
Tuesday Morning Freezing Level
8000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
8000'
(Easterly Flow *)
Tuesday Evening Freezing Level
8500'
(Easterly Flow *)
Tuesday Night Freezing Level
8500'
(Easterly Flow *)
Wednesday Morning Freezing Level
8000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
7500'
(Easterly Flow *)
Mt. Rainier & Crystal Elevation
Tuesday Morning Freezing Level
8000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
8000'
(Easterly Flow *)
Tuesday Evening Freezing Level
8500'
(Easterly Flow *)
Tuesday Night Freezing Level
8500'
(Easterly Flow *)
Wednesday Morning Freezing Level
8000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
8500'
(Easterly Flow *)
Mt. Hood Elevation
Tuesday Morning Freezing Level
9000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
9500'
(Easterly Flow *)
Tuesday Evening Freezing Level
9500'
(Easterly Flow *)
Tuesday Night Freezing Level
9000'
(Easterly Flow *)
Wednesday Morning Freezing Level
9000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
9000'
(Easterly Flow *)

* 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

Tuesday Tuesday Night Wednesday
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 0 0 0
Crystal Mt 0 0 0
Paradise 0 0 0
White Pass 0 0 0
Mt Hood Meadows 0 0 0
0 0 0
Hurricane Ridge Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Mt Baker Ski Area Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Washington Pass Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Leavenworth Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Stevens Pass Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Snoqualmie Pass Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Mission Ridge Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Crystal Mt Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Paradise Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
White Pass Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Mt Hood Meadows Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0
Timberline Precipitation Forecast
Tuesday 0
Tuesday Night 0
Wednesday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Tuesday Morning E 0 - 10 E 0 - 10 E 10 - 20 E 5 - 15 E 0 - 10
Tuesday Afternoon VAR 0 - 10 VAR 0 - 10 ESE 5 - 15 ESE 5 - 15 E 0 - 10
Tuesday Evening W 0 - 10 SW 0 - 10 VAR 0 - 10 VAR 0 - 10 SE 0 - 10
Tuesday Night WSW 5 - 15 WSW 0 - 10 W 0 - 10 VAR 0 - 10 SSE 0 - 10
Wednesday Morning WSW 0 - 10 WSW 0 - 10 W 5 - 15 W 0 - 10 WSW 0 - 10
Hurricane Ridge Elevation
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Tuesday Evening W 0 - 10
Tuesday Night WSW 5 - 15
Wednesday Morning WSW 0 - 10
Wednesday Afternoon WSW 5 - 15
Mt. Baker Elevation
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Tuesday Evening SW 0 - 10
Tuesday Night WSW 0 - 10
Wednesday Morning WSW 0 - 10
Wednesday Afternoon SW 5 - 15
Stevens and Snoqualmie Pass Elevation
Tuesday Morning E 10 - 20
Tuesday Afternoon ESE 5 - 15
Tuesday Evening VAR 0 - 10
Tuesday Night W 0 - 10
Wednesday Morning W 5 - 15
Wednesday Afternoon W 5 - 15
Mt. Rainier Elevation
Tuesday Morning E 5 - 15
Tuesday Afternoon ESE 5 - 15
Tuesday Evening VAR 0 - 10
Tuesday Night VAR 0 - 10
Wednesday Morning W 0 - 10
Wednesday Afternoon W 0 - 10
Mt. Hood Elevation
Tuesday Morning E 0 - 10
Tuesday Afternoon E 0 - 10
Tuesday Evening SE 0 - 10
Tuesday Night SSE 0 - 10
Wednesday Morning WSW 0 - 10
Wednesday Afternoon W 0 - 10
Hurricane Ridge Direction - Speed
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Tuesday Evening W 0 - 10
Tuesday Night WSW 5 - 15
Wednesday Morning WSW 0 - 10
Wednesday Afternoon WSW 5 - 15
Mt. Baker Direction - Speed
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Tuesday Evening SW 0 - 10
Tuesday Night WSW 0 - 10
Wednesday Morning WSW 0 - 10
Wednesday Afternoon SW 5 - 15
Stevens and Snoqualmie Pass Direction - Speed
Tuesday Morning E 10 - 20
Tuesday Afternoon ESE 5 - 15
Tuesday Evening VAR 0 - 10
Tuesday Night W 0 - 10
Wednesday Morning W 5 - 15
Wednesday Afternoon W 5 - 15
Mt. Rainier Direction - Speed
Tuesday Morning E 5 - 15
Tuesday Afternoon ESE 5 - 15
Tuesday Evening VAR 0 - 10
Tuesday Night VAR 0 - 10
Wednesday Morning W 0 - 10
Wednesday Afternoon W 0 - 10
Mt. Hood Direction - Speed
Tuesday Morning E 0 - 10
Tuesday Afternoon E 0 - 10
Tuesday Evening SE 0 - 10
Tuesday Night SSE 0 - 10
Wednesday Morning WSW 0 - 10
Wednesday Afternoon W 0 - 10

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
Tuesday Morning WNW 5 - 15 WNW 5 - 15 NW 5 - 15 NNW 10 - 20 NNW 5 - 15
Tuesday Afternoon WNW 10 - 20 WNW 10 - 20 NW 15 - 25 NW 15 - 25 NW 10 - 20
Tuesday Evening W 15 - 25 W 10 - 20 NW 15 - 25 NW 15 - 25 NW 10 - 20
Tuesday Night W 25 - 35 W 20 - 30 WNW 20 - 30 WNW 15 - 25 WNW 10 - 20
Wednesday Morning W 20 - 30 W 20 - 30 NW 25 - 35 NW 20 - 30 NW 10 - 20
Mt. Baker Direction - Speed
Tuesday Morning WNW 5 - 15
Tuesday Afternoon WNW 10 - 20
Tuesday Evening W 15 - 25
Tuesday Night W 25 - 35
Wednesday Morning W 20 - 30
Wednesday Afternoon W 20 - 30
Washington Pass Direction - Speed
Tuesday Morning WNW 5 - 15
Tuesday Afternoon WNW 10 - 20
Tuesday Evening W 10 - 20
Tuesday Night W 20 - 30
Wednesday Morning W 20 - 30
Wednesday Afternoon W 20 - 30
Stevens and Snoqualmie Pass Direction - Speed
Tuesday Morning NW 5 - 15
Tuesday Afternoon NW 15 - 25
Tuesday Evening NW 15 - 25
Tuesday Night WNW 20 - 30
Wednesday Morning NW 25 - 35
Wednesday Afternoon WNW 25 - 35
Mt. Rainier Direction - Speed
Tuesday Morning NNW 10 - 20
Tuesday Afternoon NW 15 - 25
Tuesday Evening NW 15 - 25
Tuesday Night WNW 15 - 25
Wednesday Morning NW 20 - 30
Wednesday Afternoon WNW 20 - 30
Mt. Hood Direction - Speed
Tuesday Morning NNW 5 - 15
Tuesday Afternoon NW 10 - 20
Tuesday Evening NW 10 - 20
Tuesday Night WNW 10 - 20
Wednesday Morning NW 10 - 20
Wednesday Afternoon NW 10 - 20

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 26, 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.