Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Saturday & Sunday
Shortwave ridging moved over the Pacific Northwest earlier today for a period of fair weather. A fast moving low pressure system moving south in northerly flow aloft will drop over the area Saturday night. Clouds will increase during the day on Saturday, with high clouds increasing for all areas in the afternoon and low level clouds mainly increasing for the Olympics and north and central west slopes of the Cascades. Light pre-frontal showers in an area of convergence affecting Stevens and Snoqualmie Passes should continue through this afternoon.
Otherwise, light snow showers will develop out ahead of low this evening and increase in intensity overnight, especially for the west slopes of the Cascades. As the low pressure system dips south off the Washington Coast on Sunday, showers will continue except for a partial clearing trend forecast over the north Cascades. Snow levels will stay relatively low throughout the short term. Cool NW flow will continue over the area Sunday night with shower activity becoming more scattered overnight.
Weather Forecast
Olympics
| Saturday |
Partly cloudy with increasing clouds in the afternoon. Light snow showers developing in the afternoon. |
| Saturday Night - Sunday Morning |
Light to occasionally moderate snow showers. |
| Sunday Afternoon |
Mostly cloudy with light snow showers becoming light to occasionally moderate in the afternoon along the north slopes of the Olympics. |
| Sunday Night |
Mostly cloudy with scattered snow showers. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Saturday |
Partly to mostly cloudy with increasing clouds in the afternoon, especially north and central Cascades. Light snow showers developing north and central Cascades in the afternoon. |
| Saturday Night - Sunday Morning |
Light to occasionally moderate snow showers. |
| Sunday Afternoon |
Mostly cloudy with light snow showers except partial clearing north Cascades. |
| Sunday Night |
Partly cloudy north Cascades. Mostly cloudy with scattered snow showers central and south Cascades. |
East slopes of the Washington Cascades
| Saturday |
Mostly sunny with increasing high clouds in the afternoon, especially northeast and central-east Cascades. Very light snow showers developing northeast Cascades in the afternoon. |
| Saturday Night - Sunday Morning |
Cloudy with light snow showers. |
| Sunday Afternoon |
Mostly cloudy with light snow showers except partial clearing northeast Cascades. |
| Sunday Night |
Partly cloudy northeast Cascades. Mostly cloudy with isolated snow showers central-east and southeast Cascades mainly near the Cascade crest. |
Mt. Hood Area
| Saturday |
Mostly clear in the morning becoming mostly cloudy with increasing high clouds in the afternoon |
| Saturday Night |
Light snow showers developing in the evening. |
| Sunday |
Light to occasionally moderate snow showers. |
| Sunday Night |
Mostly cloudy with light snow showers. |
Issued: 2:44 PM PST Saturday, February 25, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Afternoon | Snow Level | 1500' | 1000' | 1000' | ' | ' | 1000' | ' | 1500' |
| Saturday Night - Sunday Morning | Snow Level | 1500' | 500' | 0' | ' | ' | 500' | ' | 1000' |
| Sunday Afternoon | Snow Level * | 1500' | 1500' | 1500' | ' | ' | 2000' | ' | 2000' |
| Sunday Night | Snow Level * | 0' | 0' | 0' | ' | ' | 500' | ' | 500' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 1500' |
| Saturday Night - Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Sunday Night |
Snow Level 0' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 1000' |
| Saturday Night - Sunday Morning |
Snow Level 500' |
| Sunday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Sunday Night |
Snow Level 0' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 1000' |
| Saturday Night - Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Sunday Night |
Snow Level 0' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 1000' |
| Saturday Night - Sunday Morning |
Snow Level 500' |
| Sunday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 1500' |
| Saturday Night - Sunday Morning |
Snow Level 1000' |
| Sunday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 500' (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
| Sunday | Sunday | |
|---|---|---|
| Hurricane Ridge | LT 0.25 | 0.25 - 0.50 |
| Mt Baker Ski Area | 0.25 - 0.50 | LT 0.25 |
| Washington Pass | LT 0.10 | LT 0.10 |
| Stevens Pass | 0.25 - 0.50 | 0.25 - 0.50 |
| Snoqualmie Pass | 0 - 0.50 | 0 - 0.50 |
| Mission Ridge | LT 0.10 | LT 0.25 |
| Crystal Mt | LT 0.10 | 0.50 - 0.75 |
| Paradise | 0.25 - 0.50 | 0 - 0.75 |
| White Pass | LT 0.25 | 0 - 0.50 |
| Mt Hood Meadows | LT 0.10 | 0.50 - 0.75 |
| Timberline | LT 0.10 | 0 - 0.75 |
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: 2:44 PM PST Saturday, February 25, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Afternoon | W 10 - 20 | SW 10 - 20 | W 15 - 25 | --- - | W 10 - 20 |
| Saturday Night - Sunday Morning | SW 10 - 20 | SW 10 - 20 | WSW 15 - 30 | --- - | WSW 15 - 30 |
| Sunday Afternoon | ENE 10 - 20 | ENE 5 - 15 | E 5 - 15 | --- - | WSW 5 - 15 |
| Sunday Night | NW 0 - 10 | VAR 0 - 10 | W 0 - 10 | --- - | W 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Afternoon | W 10 - 20 |
| Saturday Night - Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | ENE 10 - 20 |
| Sunday Night | NW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night - Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Afternoon | W 15 - 25 |
| Saturday Night - Sunday Morning | WSW 15 - 30 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Afternoon | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Afternoon | W 10 - 20 |
| Saturday Night - Sunday Morning | WSW 15 - 30 |
| Sunday Afternoon | WSW 5 - 15 |
| Sunday Night | W 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Afternoon | W 10 - 20 |
| Saturday Night - Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | ENE 10 - 20 |
| Sunday Night | NW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night - Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Afternoon | W 15 - 25 |
| Saturday Night - Sunday Morning | WSW 15 - 30 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Afternoon | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Afternoon | W 10 - 20 |
| Saturday Night - Sunday Morning | WSW 15 - 30 |
| Sunday Afternoon | WSW 5 - 15 |
| Sunday Night | 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 | |
|---|---|---|---|---|---|
| Saturday Afternoon - Saturday Evening | W 20 - 30 | W 15 - 25 | WNW 25 - 35 | --- - | WNW 15 - 25 |
| Saturday Night - Sunday Morning | W 0 - 10 | W 0 - 10 | WSW 20 - 30 | --- - | W 25 - 35 |
| Sunday Afternoon | E 5 - 15 | E 0 - 10 | VAR 0 - 10 | --- - | W 10 - 20 |
| Sunday Night | W 10 - 20 | W 10 - 20 | W 10 - 20 | --- - | WNW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Afternoon - Saturday Evening | W 20 - 30 |
| Saturday Night - Sunday Morning | W 0 - 10 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night | W 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Afternoon - Saturday Evening | W 15 - 25 |
| Saturday Night - Sunday Morning | W 0 - 10 |
| Sunday Afternoon | E 0 - 10 |
| Sunday Night | W 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Afternoon - Saturday Evening | WNW 25 - 35 |
| Saturday Night - Sunday Morning | WSW 20 - 30 |
| Sunday Afternoon | VAR 0 - 10 |
| Sunday Night | W 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Afternoon - Saturday Evening | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Afternoon - Saturday Evening | WNW 15 - 25 |
| Saturday Night - Sunday Morning | W 25 - 35 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | WNW 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.
Issued: 2:44 PM PST Saturday, February 25, 2017
Extended Weather Synopsis for Sunday night through Sunday
A longwave trough will stretch through the inland NW on Monday with light showers focused mainly in the south and central Washington Cascades. The jet stream will shift north into central British Columbia on Tuesday, setting up a change in the weather pattern. Clouds should increase later Tuesday with perhaps some light snow developing for the north Cascades and Olympics in the afternoon. The jet should sag south on Wednesday with warm frontal moisture potentially becoming heavy for the Olympics and north Cascades with much lighter amounts further south. A slow warming trend will begin Tuesday night and continue through Wednesday.
Extended Weather
Olympics, Washington Cascades and Mt. Hood
Partly cloudy north Cascades and Olympics with isolated snow showers. Mostly cloudy with scattered snow showers central and south Washington Cascades including Mt. Hood.
Partly to mostly cloudy with isolated snow showers tapering off.
Partly cloudy in the morning. Increasing clouds and a chance of light snow Olympics and north Cascades in the afternoon.
Light snow and rain Olympics and north Cascades becoming moderate on Wednesday. Light rain and snow developing south and central Washington Cascades overnight. Mostly cloudy with periods of light rain and snow Mt. Hood on Wednesday. Slight warming trend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Monday - Monday Night | Snow Level | 0' - 500' | 500' - 1500' | 1000' - 2000' | |
| Tuesday - Tuesday Night | Snow Level | 0' - 1000' | 500' - 1500' | 1500' - 2500' | |
| Wednesday | Snow Level | 2500' - 3500' | 2500' - 3500' | 3000' - 4000' |
| Mt. Baker | Elevation |
|---|---|
| Monday - Monday Night |
Snow Level 0' - 500' |
| Tuesday - Tuesday Night |
Snow Level 0' - 1000' |
| Wednesday |
Snow Level 2500' - 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday - Monday Night |
Snow Level 500' - 1500' |
| Tuesday - Tuesday Night |
Snow Level 500' - 1500' |
| Wednesday |
Snow Level 2500' - 3500' |
| Mt. Hood | Elevation |
|---|---|
| Monday - Monday Night |
Snow Level 1000' - 2000' |
| Tuesday - Tuesday Night |
Snow Level 1500' - 2500' |
| Wednesday |
Snow Level 3000' - 4000' |
* 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 Feb 25, 2017
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