Issued: 7:01 AM PST Wednesday, December 13, 2017
by Robert Hahn

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

Weather Synopsis for Wednesday & Thursday

Our persistent upper ridge and warm airmass will slightly re-amplify Wednesday through Thursday morning. Offshore surface flow will continue through Thursday afternoon with a surface high pressure located east of the Cascades. On Thursday night, a weak cold front and shortwave ridge will begin to flatten our ridge and will be in our near coastal waters by morning. Minor precipitation might be seen in the Olympics and North Cascades by early Friday.

Weather Forecast

Olympics
Wednesday

Mostly sunny with scattered high clouds.

Wednesday Night

Mostly clear with scattered high clouds.

Thursday

Mostly sunny with some high clouds at times.

Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
Wednesday

Mostly sunny with scattered high clouds. Low clouds in the passes, mainly Snoqualmie.

Wednesday Night

Mostly clear with scattered high clouds. Low clouds in the passes, mainly Snoqualmie.

Thursday

Mostly sunny with with some high clouds in the afternoon. Low clouds in the passes, mainly Snoqualmie.

East slopes of the Washington Cascades
Wednesday

Mostly sunny. Low clouds in the morning, decreasing by afternoon.

Wednesday Night

Mostly clear with low clouds at lower elevations reforming.

Thursday

Mostly sunny with with some high clouds in the afternoon. Low clouds at lower elevations.

Mt. Hood Area
Wednesday

Mostly sunny with scattered high clouds.

Wednesday Night

Mostly clear.

Thursday

Mostly sunny with with some high clouds mainly 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
Wednesday Morning Freezing Level * 11000' 9000' 7000' ' ' 1000' ' 12000'
Wednesday Afternoon Freezing Level * 12000' 11000' 10000' ' ' 12000' ' 13000'
Wednesday Night Freezing Level * 12500' 11500' 11500' ' ' 12000' ' 13000'
Thursday Morning Freezing Level * 12500' 12000' 12000' ' ' 12500' ' 13000'
Thursday Afternoon Freezing Level * 12000' 11500' 11500' ' ' 12000' ' 12500'
Hurricane Ridge Elevation
Wednesday Morning Freezing Level
11000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
12000'
(Easterly Flow *)
Wednesday Night Freezing Level
12500'
(Easterly Flow *)
Thursday Morning Freezing Level
12500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
12000'
(Easterly Flow *)
Thursday Night Snow Level
7500'
(Easterly Flow *)
Mt. Baker Elevation
Wednesday Morning Freezing Level
9000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
11000'
(Easterly Flow *)
Wednesday Night Freezing Level
11500'
(Easterly Flow *)
Thursday Morning Freezing Level
12000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
11500'
(Easterly Flow *)
Thursday Night Snow Level
6000'
(Easterly Flow *)
Washington Pass Elevation
Wednesday Morning Freezing Level
7000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
10000'
(Easterly Flow *)
Wednesday Night Freezing Level
11500'
(Easterly Flow *)
Thursday Morning Freezing Level
12000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
11500'
(Easterly Flow *)
Thursday Night Snow Level
7000'
(Easterly Flow *)
Leavenworth Elevation
Wednesday Morning Freezing Level
'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
'
(Easterly Flow *)
Wednesday Night Freezing Level
'
(Easterly Flow *)
Thursday Morning Freezing Level
'
(Easterly Flow *)
Thursday Afternoon Freezing Level
'
(Easterly Flow *)
Thursday Night Snow Level
'
(Easterly Flow *)
Stevens Pass Elevation
Wednesday Morning Freezing Level
'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
'
(Easterly Flow *)
Wednesday Night Freezing Level
'
(Easterly Flow *)
Thursday Morning Freezing Level
'
(Easterly Flow *)
Thursday Afternoon Freezing Level
'
(Easterly Flow *)
Thursday Night Snow Level
'
(Easterly Flow *)
Snoqualmie Pass Elevation
Wednesday Morning Freezing Level
1000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
12000'
(Easterly Flow *)
Wednesday Night Freezing Level
12000'
(Easterly Flow *)
Thursday Morning Freezing Level
12500'
(Easterly Flow *)
Thursday Afternoon Freezing Level
12000'
(Easterly Flow *)
Thursday Night Snow Level
8000'
(Easterly Flow *)
Mt. Rainier & Crystal Elevation
Wednesday Morning Freezing Level
'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
'
(Easterly Flow *)
Wednesday Night Freezing Level
'
(Easterly Flow *)
Thursday Morning Freezing Level
'
(Easterly Flow *)
Thursday Afternoon Freezing Level
'
(Easterly Flow *)
Thursday Night Snow Level
'
(Easterly Flow *)
Mt. Hood Elevation
Wednesday Morning Freezing Level
12000'
(Easterly Flow *)
Wednesday Afternoon Freezing Level
13000'
(Easterly Flow *)
Wednesday Night Freezing Level
13000'
(Easterly Flow *)
Thursday Morning Freezing Level
13000'
(Easterly Flow *)
Thursday Afternoon Freezing Level
12500'
(Easterly Flow *)
Thursday Night Snow Level
10500'
(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

Thursday Thursday
Hurricane Ridge LT 0.10 LT 0.10
Mt Baker Ski Area LT 0.10 LT 0.10
Washington Pass LT 0.10 LT 0.10
Stevens Pass LT 0.10 LT 0.10
Snoqualmie Pass LT 0.10 LT 0.10
Mission Ridge LT 0.10 LT 0.10
Crystal Mt LT 0.10 LT 0.10
Paradise LT 0.10 LT 0.10
White Pass LT 0.10 LT 0.10
Mt Hood Meadows LT 0.10 LT 0.10
LT 0.10 LT 0.10

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Wednesday Morning NNE 5 - 10 NE 5 - 10 ENE 5 - 10 --- - ENE 5 - 10
Wednesday Afternoon ENE 5 - 10 ENE 5 - 10 ENE 10 - 15 --- - ENE 10 - 15
Wednesday Night VAR 0 - 10 VAR 0 - 10 ENE 0 - 10 --- - ENE 5 - 10
Thursday Morning WNW 5 - 10 N 0 - 10 ENE 5 - 10 --- - NE 5 - 10
Thursday Afternoon W 5 - 10 WSW 5 - 10 SW 0 - 10 --- - S 0 - 10
Hurricane Ridge Elevation
Wednesday Morning NNE 5 - 10
Wednesday Afternoon ENE 5 - 10
Wednesday Night VAR 0 - 10
Thursday Morning WNW 5 - 10
Thursday Afternoon W 5 - 10
Thursday Night W 15 - 20
Mt. Baker Elevation
Wednesday Morning NE 5 - 10
Wednesday Afternoon ENE 5 - 10
Wednesday Night VAR 0 - 10
Thursday Morning N 0 - 10
Thursday Afternoon WSW 5 - 10
Thursday Night WSW 10 - 15
Stevens and Snoqualmie Pass Elevation
Wednesday Morning ENE 5 - 10
Wednesday Afternoon ENE 10 - 15
Wednesday Night ENE 0 - 10
Thursday Morning ENE 5 - 10
Thursday Afternoon SW 0 - 10
Thursday Night WSW 15 - 20
Mt. Rainier Elevation
Wednesday Morning --- -
Wednesday Afternoon --- -
Wednesday Night --- -
Thursday Morning --- -
Thursday Afternoon --- -
Thursday Night --- -
Mt. Hood Elevation
Wednesday Morning ENE 5 - 10
Wednesday Afternoon ENE 10 - 15
Wednesday Night ENE 5 - 10
Thursday Morning NE 5 - 10
Thursday Afternoon S 0 - 10
Thursday Night W 15 - 20
Hurricane Ridge Direction - Speed
Wednesday Morning NNE 5 - 10
Wednesday Afternoon ENE 5 - 10
Wednesday Night VAR 0 - 10
Thursday Morning WNW 5 - 10
Thursday Afternoon W 5 - 10
Thursday Night W 15 - 20
Mt. Baker Direction - Speed
Wednesday Morning NE 5 - 10
Wednesday Afternoon ENE 5 - 10
Wednesday Night VAR 0 - 10
Thursday Morning N 0 - 10
Thursday Afternoon WSW 5 - 10
Thursday Night WSW 10 - 15
Stevens and Snoqualmie Pass Direction - Speed
Wednesday Morning ENE 5 - 10
Wednesday Afternoon ENE 10 - 15
Wednesday Night ENE 0 - 10
Thursday Morning ENE 5 - 10
Thursday Afternoon SW 0 - 10
Thursday Night WSW 15 - 20
Mt. Rainier Direction - Speed
Wednesday Morning --- -
Wednesday Afternoon --- -
Wednesday Night --- -
Thursday Morning --- -
Thursday Afternoon --- -
Thursday Night --- -
Mt. Hood Direction - Speed
Wednesday Morning ENE 5 - 10
Wednesday Afternoon ENE 10 - 15
Wednesday Night ENE 5 - 10
Thursday Morning NE 5 - 10
Thursday Afternoon S 0 - 10
Thursday Night W 15 - 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.

Free Winds at 9000' (mph)

Mt. Baker Washington Pass Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Wednesday NNW 15 - 20 NNW 15 - 20 NW 15 - 20 --- - NNW 20 - 25
Wednesday NNE 5 - 10 NNE 10 - 15 N 10 - 15 --- - N 15 - 20
Wednesday NNW 15 - 20 WNW 15 - 20 WNW 15 - 20 --- - WNW 5 - 10
Thursday WNW 15 - 20 WNW 10 - 15 NW 20 - 35 --- - NNW 15 - 20
Thursday W 20 - 25 W 20 - 25 W 20 - 25 --- - NW 20 - 25
Mt. Baker Direction - Speed
Wednesday NNW 15 - 20
Wednesday NNE 5 - 10
Wednesday NNW 15 - 20
Thursday WNW 15 - 20
Thursday W 20 - 25
Thursday WSW 35 - 45
Washington Pass Direction - Speed
Wednesday NNW 15 - 20
Wednesday NNE 10 - 15
Wednesday WNW 15 - 20
Thursday WNW 10 - 15
Thursday W 20 - 25
Thursday WSW 45 - 60
Stevens and Snoqualmie Pass Direction - Speed
Wednesday NW 15 - 20
Wednesday N 10 - 15
Wednesday WNW 15 - 20
Thursday NW 20 - 35
Thursday W 20 - 25
Thursday WSW 40 - 55
Mt. Rainier Direction - Speed
Wednesday --- -
Wednesday --- -
Wednesday --- -
Thursday --- -
Thursday --- -
Thursday --- -
Mt. Hood Direction - Speed
Wednesday NNW 20 - 25
Wednesday N 15 - 20
Wednesday WNW 5 - 10
Thursday NNW 15 - 20
Thursday NW 20 - 25
Thursday WSW 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

Previous forecast from Dec 12, 2017

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