Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday & Saturday
A dominant upper level ridge over the west coast has pushed the steady stream of warm moisture that plagued the PNW over the last few days well into British Columbia. High clouds should occasionally pass over the Olympics, north and central Cascades today, with mostly sunny skies further south.
This has allowed very mild air to be pumped in the region... freezing levels will reside between 11 - 12 kft today through Monday morning. Some NWAC stations have been in the 50s since this morning.
Expect SW winds to be moderate above crest level through the short term forecast, even strong over the North Cascades today. An unfrozen Camp Muir anemometer was averaging over 50 mph at the noon hour while winds were relatively light at most stations below crest level.
Weak easterly flow may draw slightly cooler temps through the Cascade passes tomorrow along with areas of low clouds for Monday morning.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Sunday - Sunday Night |
Warm. Partly cloudy north part, mostly clear south part. Moderate to strong winds in the alpine. |
| Monday |
Continued mild and mostly sunny except cooler with areas of low morning clouds Cascade Passes. Moderate winds in the alpine. |
| Monday Night |
Mostly clear in the evening becoming mostly cloudy overnight. Gradual cooling trend. Moderate winds in the alpine. |
East slopes of the Washington Cascades
| Sunday - Sunday Night |
Warm. Partly cloudy north part, mostly clear south part. Moderate to strong winds in the alpine, especially northeast Cascades. |
| Monday |
Continued mild and mostly sunny except cooler with low clouds lower slopes of east Cascades. Moderate winds in the alpine. |
| Monday Night |
Mostly clear in the evening with increasing clouds overnight. Gradual cooling trend. Moderate winds in the alpine. |
Mt. Hood Area
| Sunday - Sunday Night |
Warm and mostly clear. Moderate winds upper mountain. |
| Monday |
Continued mild and mostly sunny. Moderate winds upper mountain. |
| Monday Night |
Mostly clear, increasing high clouds late. Gradual cooling trend. Moderate winds upper mountain. |
Issued: 1:02 PM PST Sunday, January 25, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday | Freezing Level | 11500' | 11000' | 11000' | ' | ' | 12000' | ' | 12500' |
| Sunday Night - Monday Afternoon | Freezing Level * | 11000' | 10000' | 10000' | ' | ' | 11000' | ' | 12000' |
| Monday Night | Freezing Level | 7500' | 7000' | 6500' | ' | ' | 8000' | ' | 10000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday |
Freezing Level 11500' |
| Sunday Night - Monday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Monday Night |
Freezing Level 7500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday |
Freezing Level 11000' |
| Sunday Night - Monday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Monday Night |
Freezing Level 7000' |
| Washington Pass | Elevation |
|---|---|
| Sunday |
Freezing Level 11000' |
| Sunday Night - Monday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Monday Night |
Freezing Level 6500' |
| Leavenworth | Elevation |
|---|---|
| Sunday |
Freezing Level ' |
| Sunday Night - Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' |
| Stevens Pass | Elevation |
|---|---|
| Sunday |
Freezing Level ' |
| Sunday Night - Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday |
Freezing Level 12000' |
| Sunday Night - Monday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Monday Night |
Freezing Level 8000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday |
Freezing Level ' |
| Sunday Night - Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' |
| Mt. Hood | Elevation |
|---|---|
| Sunday |
Freezing Level 12500' |
| Sunday Night - Monday Afternoon |
Freezing Level 12000' (Easterly Flow *) |
| Monday Night |
Freezing Level 10000' |
* 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 0.10 | 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 |
| Timberline | LT 0.10 | 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: 1:02 PM PST Sunday, January 25, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 | SW 5 - 15 | SW 0 - 10 | --- - | SW 5 - 15 |
| Monday Afternoon | S 10 - 20 | S 10 - 20 | SSW 10 - 20 | --- - | SW 10 - 20 |
| Monday Night | SW 10 - 20 | S 5 - 15 | SW 5 - 15 | --- - | SW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | S 10 - 20 |
| Monday Night | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | S 10 - 20 |
| Monday Night | S 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon - Monday Morning | SW 0 - 10 |
| Monday Afternoon | SSW 10 - 20 |
| Monday Night | SW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Afternoon - Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | SW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | S 10 - 20 |
| Monday Night | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | S 10 - 20 |
| Monday Night | S 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon - Monday Morning | SW 0 - 10 |
| Monday Afternoon | SSW 10 - 20 |
| Monday Night | SW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon - Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon - Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | SW 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Afternoon - Sunday Evening | WSW 30 - 40 | WSW 45 - 55 | SW 30 - 40 | --- - | SW 25 - 35 |
| Sunday Night - Monday Night | SW 20 - 30 | SW 30 - 40 | SW 25 - 35 | --- - | SW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon - Sunday Evening | WSW 30 - 40 |
| Sunday Night - Monday Night | SW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Afternoon - Sunday Evening | WSW 45 - 55 |
| Sunday Night - Monday Night | SW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon - Sunday Evening | SW 30 - 40 |
| Sunday Night - Monday Night | SW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon - Sunday Evening | --- - |
| Sunday Night - Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon - Sunday Evening | SW 25 - 35 |
| Sunday Night - Monday Night | SW 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.
Issued: 1:02 PM PST Sunday, January 25, 2015
Extended Weather Synopsis for Saturday night through Saturday
A weak front will approach the coast Tuesday morning spreading light rain and snow over the area Tuesday and knock snow levels down to 5000-6000 ft by the afternoon. This front is not expected to produce significant precipitation amounts.
Clouds and low level moisture should increase during the day Tuesday, especially west of the Cascade crest. Leftover showers and moisture will stick around through Wednesday morning with partial clearing likely during the afternoon. Upper level ridging will begin to build offshore on Thursday beginning a clearing and warming trend that should extend at least through Friday.
Extended Weather
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes and Mt. Hood area
Mostly cloudy with light rain and snow.
Mostly cloudy with scattered light rain and snow showers.
Mostly cloudy becoming partly cloudy in the afternoon.
Partly to mostly clear. Slow warming trend.
East slopes of the Washington Cascades
Mostly cloudy with periods of light rain and snow near the Cascade crest.
Mostly cloudy with isolated light rain and snow showers ending and becoming partly cloudy.
Partly to mostly sunny.
Mostly clear. Slow warming trend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday | Snow Level | 4500' - 5500' | 5000' - 6000' | 6000' - 7000' | |
| Tuesday Night - Wednesday Morning | Snow Level | 3500' - 4500' | 4000' - 5000' | 5500' - 6500' | |
| Wednesday Afternoon - Thursday | Freezing Level | 5000' - 6000' | 5500' - 6500' | 7000' - 8000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday |
Snow Level 4500' - 5500' |
| Tuesday Night - Wednesday Morning |
Snow Level 3500' - 4500' |
| Wednesday Afternoon - Thursday |
Freezing Level 5000' - 6000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday |
Snow Level 5000' - 6000' |
| Tuesday Night - Wednesday Morning |
Snow Level 4000' - 5000' |
| Wednesday Afternoon - Thursday |
Freezing Level 5500' - 6500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday |
Snow Level 6000' - 7000' |
| Tuesday Night - Wednesday Morning |
Snow Level 5500' - 6500' |
| Wednesday Afternoon - Thursday |
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 Jan 25, 2015
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.