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 & Saturday
Light to moderate snowfall in the Mt. Hood area and along the east slopes of the Cascades as well as some lighter upslope snow showers along the north slopes of the Olympics should continue through mid-day. However, the overall pattern is for drying and cooling as a high amplitude ridge builds offshore and energy from the upper level trough currently over Oregon dives south.
Surface gradients will turn more easterly today. Expect moderately strong and cold east winds through the passes up to crest level Monday through Tuesday including the Mt. Hood area. Monday afternoon through Tuesday night skies will be mostly clear.
Weather Forecast
Olympics
| Monday Afternoon |
Partly sunny with isolated snow showers. |
| Monday Night - Tuesday Night |
Mostly clear. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Monday |
Partly sunny with isolated snow showers mainly near the Cascade crest. Moderate to strong east winds developing. |
| Monday Night - Tuesday Night |
Mostly clear. Moderate to strong east winds beginning to ease Tuesday afternoon through Tuesday night. |
East slopes of the Washington Cascades
| Monday |
Mostly cloudy with light to occasionally moderate snow showers. Moderate to strong east winds developing. |
| Monday Night - Tuesday Night |
Mostly clear. Moderate to strong east winds beginning to ease Tuesday afternoon or Tuesday night. |
Mt. Hood Area
| Monday |
Mostly cloudy with light to |
| Monday Night - Tuesday Night |
Mostly clear. Moderate to strong east winds beginning to ease late Tuesday afternoon through Tuesday night. |
Issued: 1:06 PM PST Monday, December 29, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Afternoon - Tuesday Morning | Freezing Level * | 500' | 0' | 0' | ' | ' | 0' | ' | 0' |
| Tuesday Afternoon - Tuesday Night | Freezing Level * | 1500' | 1000' | 500' | ' | ' | 1000' | ' | 1000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level 500' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level 1500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level 1000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level 500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level 1000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Freezing Level 1000' (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
| Saturday | Saturday | |
|---|---|---|
| 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 0.25 | 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 0.25 | LT 0.10 |
| Timberline | LT 0.25 | LT 0.10 |
LT = less than; WE or Water equivalent is the liquid water equivalent of melted snow in hundredths of inches. As a rough approximation 1 inch of snow = about .10 inches WE, or 10 inches of snow = about 1 inch WE.
Issued: 1:06 PM PST Monday, December 29, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Afternoon - Tuesday Morning | NE 15 - 25 | NE 15 - 25 | E 15 - 30 | --- - | E 25 - 35 |
| Tuesday Afternoon | N 5 - 15 | NW 0 - 10 | NE 5 - 15 | --- - | E 15 - 25 |
| Tuesday Night | N 0 - 10 | N 0 - 10 | NW 0 - 10 | --- - | E 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning | NE 15 - 25 |
| Tuesday Afternoon | N 5 - 15 |
| Tuesday Night | N 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning | NE 15 - 25 |
| Tuesday Afternoon | NW 0 - 10 |
| Tuesday Night | N 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning | E 15 - 30 |
| Tuesday Afternoon | NE 5 - 15 |
| Tuesday Night | NW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon - Tuesday Morning | E 25 - 35 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Night | E 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | NE 15 - 25 |
| Tuesday Afternoon | N 5 - 15 |
| Tuesday Night | N 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | NE 15 - 25 |
| Tuesday Afternoon | NW 0 - 10 |
| Tuesday Night | N 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | E 15 - 30 |
| Tuesday Afternoon | NE 5 - 15 |
| Tuesday Night | NW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | E 25 - 35 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Night | E 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 Afternoon | NE 15 - 25 | NE 15 - 25 | NE 15 - 25 | --- - | NE 15 - 25 |
| Monday Night - Tuesday Mid-day | NE 25 - 40 | NNE 20 - 30 | NE 30 - 40 | --- - | NE 25 - 40 |
| Tuesday Afternoon | N 15 - 25 | N 25 - 35 | NNE 25 - 35 | --- - | NE 30 - 45 |
| Tuesday Night | N 10 - 20 | NNW 15 - 25 | NNW 15 - 25 | --- - | N 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon | NE 15 - 25 |
| Monday Night - Tuesday Mid-day | NE 25 - 40 |
| Tuesday Afternoon | N 15 - 25 |
| Tuesday Night | N 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Afternoon | NE 15 - 25 |
| Monday Night - Tuesday Mid-day | NNE 20 - 30 |
| Tuesday Afternoon | N 25 - 35 |
| Tuesday Night | NNW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon | NE 15 - 25 |
| Monday Night - Tuesday Mid-day | NE 30 - 40 |
| Tuesday Afternoon | NNE 25 - 35 |
| Tuesday Night | NNW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon | --- - |
| Monday Night - Tuesday Mid-day | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon | NE 15 - 25 |
| Monday Night - Tuesday Mid-day | NE 25 - 40 |
| Tuesday Afternoon | NE 30 - 45 |
| Tuesday Night | N 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.
Issued: 1:06 PM PST Monday, December 29, 2014
Extended Weather Synopsis for Saturday night through Saturday
The upper level ridge offshore will shunt weather systems well to our north into Alaska and the Yukon and continue a dry spell for the PNW through the New Year. Warm air aloft should continue to work inland over the extended period. As the offshore flow and the easterly winds ease Wednesday... a modest jump in freezing levels should be seen over the Cascades and Mt. Hood during the middle of the week.
A weather system should begin to flatten the upper level ridge Friday... sending some high clouds over the ridge and into the Olympics and North Cascades.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Mostly clear. Warming trend.
Mostly cloudy Olympics and
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday - Wednesday Night | Freezing Level | 3000' - 4000' | 1000' - 2000' | 1500' - 2500' | * |
| Thursday - Thursday Night | Freezing Level | 3000' - 4000' | 2500' - 3500' | 2000' - 3000' | * |
| Friday | Freezing Level | 3500' - 4500' | 5000' - 6000' | 7000' - 8000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 3000' - 4000' (Easterly Flow *) |
| Thursday - Thursday Night |
Freezing Level 3000' - 4000' (Easterly Flow *) |
| Friday |
Freezing Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Thursday - Thursday Night |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Friday |
Freezing Level 5000' - 6000' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 1500' - 2500' (Easterly Flow *) |
| Thursday - Thursday Night |
Freezing Level 2000' - 3000' (Easterly Flow *) |
| Friday |
Freezing Level 7000' - 8000' |
* 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 Dec 29, 2014
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