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
Cool upper level troughing is over the area today but sunshine, a rarity this winter, has come out in force this afternoon as isolated morning showers have ended. There is still some daytime cumulus over most mountain locations, with the exception of the north Cascades where slightly more moisture and cloud cover is hanging tough.
Northerly surface gradients on Sunday will become offshore easterly gradients on Monday as high pressure builds east of the Cascades. A moderate easterly breeze should be seen in the Cascade Passes and down around Mt. Hood later tonight through Monday. A weak system off the California coast will rotate up bands of light precipitation on Monday. The low levels will be quite dry such that the main affect for the Washington Cascades will be increasing high clouds from the south through the day with slightly lowering ceilings while light precipitation develops for Mt. Hood in the afternoon. Light bands of rain and snow should develop for all areas Monday night.
Weather Forecast
Olympics
| Sunday Afternoon |
Mostly sunny. |
| Sunday Night - Monday Morning |
Mostly clear with increasing high clouds late overnight. |
| Monday Afternoon |
Cloudy with a chance of very light rain and snow. |
| Monday Night |
Cloudy with periods of light rain and snow. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Sunday Afternoon |
Mostly sunny, except partly sunny northwest Cascades. |
| Sunday Night - Monday Morning |
Mostly clear with increasing high clouds south part overnight. |
| Monday Afternoon |
Cloudy with a chance of very light rain and snow far south Washington Cascades. |
| Monday Night |
Cloudy with periods of light rain and snow. |
East slopes of the Washington Cascades
| Sunday Afternoon |
Mostly sunny except partly sunny northeast Cascades. |
| Sunday Night - Monday Morning |
Mostly clear with increasing high clouds south part overnight. |
| Monday Afternoon |
Cloudy with a chance of very light rain and snow far southeast Washington Cascades. |
| Monday Night |
Cloudy with periods of light rain and snow. |
Mt. Hood Area
| Sunday Afternoon |
Mostly sunny. |
| Sunday Night |
Becoming cloudy overnight. |
| Monday |
Cloudy with very light rain and snow developing during the day. |
| Monday Night |
Cloudy with periods of light rain and snow. |
Issued: 2:04 PM PDT Sunday, March 19, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Afternoon - Sunday Night | Freezing Level | 3500' | 3500' | 4000' | ' | ' | 4000' | ' | 5500' |
| Monday Morning | Snow Level * | 3500' | 2500' | 1000' | ' | ' | 2000' | ' | 3500' |
| Monday Afternoon - Monday Night | Snow Level * | 4000' | 4000' | 4000' | ' | ' | 3500' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level 3500' |
| Monday Morning |
Snow Level 3500' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level 3500' |
| Monday Morning |
Snow Level 2500' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level 4000' |
| Monday Morning |
Snow Level 1000' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level ' |
| Monday Morning |
Snow Level ' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level ' |
| Monday Morning |
Snow Level ' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level 4000' |
| Monday Morning |
Snow Level 2000' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level ' |
| Monday Morning |
Snow Level ' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon - Sunday Night |
Freezing Level 5500' |
| Monday Morning |
Snow Level 3500' (Easterly Flow *) |
| Monday Afternoon - Monday Night |
Snow Level 4000' (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 0.25 | LT 0.25 |
| 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 0.25 |
| Paradise | LT 0.10 | LT 0.25 |
| White Pass | LT 0.10 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | 0.25 - 0.50 |
| Timberline | LT 0.10 | 0.25 - 0.50 |
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: 2:04 PM PDT Sunday, March 19, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Afternoon | ENE 0 - 10 | NE 0 - 10 | E 0 - 10 | --- - | E 0 - 10 |
| Sunday Night - Monday Morning | E 10 - 20 | E 5 - 15 | E 10 - 20 | --- - | E 15 - 25 |
| Monday Afternoon - Monday Night | SE 5 - 15 | E 5 - 15 | ESE 10 - 20 | --- - | ESE 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon | ENE 0 - 10 |
| Sunday Night - Monday Morning | E 10 - 20 |
| Monday Afternoon - Monday Night | SE 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon | NE 0 - 10 |
| Sunday Night - Monday Morning | E 5 - 15 |
| Monday Afternoon - Monday Night | E 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon | E 0 - 10 |
| Sunday Night - Monday Morning | E 10 - 20 |
| Monday Afternoon - Monday Night | ESE 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon - Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon | E 0 - 10 |
| Sunday Night - Monday Morning | E 15 - 25 |
| Monday Afternoon - Monday Night | ESE 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Afternoon | ENE 0 - 10 |
| Sunday Night - Monday Morning | E 10 - 20 |
| Monday Afternoon - Monday Night | SE 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | NE 0 - 10 |
| Sunday Night - Monday Morning | E 5 - 15 |
| Monday Afternoon - Monday Night | E 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | E 0 - 10 |
| Sunday Night - Monday Morning | E 10 - 20 |
| Monday Afternoon - Monday Night | ESE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon - Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | E 0 - 10 |
| Sunday Night - Monday Morning | E 15 - 25 |
| Monday Afternoon - Monday Night | ESE 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 | W 5 - 15 | W 5 - 15 | W 10 - 20 | --- - | SW 10 - 20 |
| Sunday Night - Monday Morning | S 5 - 15 | S 5 - 15 | SW 10 - 20 | --- - | SW 15 - 25 |
| Monday Afternoon - Monday Night | S 10 - 20 | S 10 - 20 | S 10 - 20 | --- - | SW 15 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | W 5 - 15 |
| Sunday Night - Monday Morning | S 5 - 15 |
| Monday Afternoon - Monday Night | S 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | W 5 - 15 |
| Sunday Night - Monday Morning | S 5 - 15 |
| Monday Afternoon - Monday Night | S 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | W 10 - 20 |
| Sunday Night - Monday Morning | SW 10 - 20 |
| Monday Afternoon - Monday Night | S 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon - Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | SW 10 - 20 |
| Sunday Night - Monday Morning | SW 15 - 25 |
| Monday Afternoon - Monday Night | SW 15 - 30 |
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: 2:04 PM PDT Sunday, March 19, 2017
Extended Weather Synopsis for Saturday night through Saturday
An upper level trough offshore will slowly slide toward the West Coast Tuesday and Tuesday night sending a series of frontal bands through the region. Precipitation looks to be on the lighter side with southerly flow aloft that should favor the volcanoes during this period. Post-frontal showers on Wednesday and Wednesday night should bring some light snow accumulations as snow levels lower during the day. Weak upper level ridging will build over the area on Thursday but incoming clouds and moisture should already be spreading inland from the coast by the afternoon.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Cloudy with light rain and snow at times.
Light to moderate rain and snow showers. Slight cooling trend.
Mostly cloudy with scattered light rain and snow showers.
Cloudy with light rain and snow developing Olympics and northwest Cascades.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday - Tuesday Night | Snow Level | 5000' - 6000' | 5000' - 6000' | 5500' - 6500' | |
| Wednesday | Snow Level | 3000' - 4000' | 3500' - 4500' | 3500' - 4500' | |
| Wednesday Night | Snow Level | 2000' - 3000' | 2000' - 3000' | 2500' - 3500' | |
| Thursday | Snow Level | 3500' - 4500' | 3500' - 4500' | 4500' - 5500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level 5000' - 6000' |
| Wednesday |
Snow Level 3000' - 4000' |
| Wednesday Night |
Snow Level 2000' - 3000' |
| Thursday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level 5000' - 6000' |
| Wednesday |
Snow Level 3500' - 4500' |
| Wednesday Night |
Snow Level 2000' - 3000' |
| Thursday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level 5500' - 6500' |
| Wednesday |
Snow Level 3500' - 4500' |
| Wednesday Night |
Snow Level 2500' - 3500' |
| Thursday |
Snow Level 4500' - 5500' |
* 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 Mar 19, 2017
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