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 & Tuesday
A skinny amplified upper level ridge outside of 130 W extends well north into the Yukon this morning. Longwave troughing will dig over the intermountain western U.S. today... forming an omega blocking pattern over much of the west coast. After some leftover morning clouds and possibly a few isolated showers along the east slopes of the Cascades... our region should be dry and mostly clear through the short term.
The biggest story weather-wise will be the developing E-NE winds... found both near the Passes and also in the alpine. Breezy easterlies will develop today and continue through early Sunday... with winds becoming strong down near Mt. Hood. The winds will ease Sunday afternoon with a slow warming trend beginning.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Saturday Morning |
Mostly clear, few clouds near the Cascade crest. |
| Saturday Afternoon - Sunday Morning |
Mostly clear. Breezy east winds near Cascade Passes and in the alpine. |
| Sunday Afternoon - Sunday Night |
Mostly clear. Warmer. |
East slopes of the Washington Cascades
| Saturday Morning |
Partly to mostly cloudy, chance of light snow showers. |
| Saturday Afternoon - Sunday Morning |
Becoming mostly clear Saturday afternoon. Breezy east winds near Cascade Passes and in the alpine. |
| Sunday Afternoon - Sunday Night |
Mostly clear. Warmer. |
Mt. Hood Area
| Saturday Morning |
Partly cloudy. |
| Saturday Afternoon - Sunday Afternoon |
Partly cloudy, becoming mostly clear Saturday night. Breezy east winds becoming strong late Saturday afternoon and evening. |
| Sunday Night |
Mostly clear. Winds easing overnight. Slight warming trend. |
Issued: 10:54 AM PST Saturday, February 21, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Morning | Freezing Level | 3500' | 3000' | 2500' | ' | ' | 3000' | ' | 4000' |
| Saturday Afternoon | Freezing Level * | 5000' | 4500' | 3500' | ' | ' | 4500' | ' | 4500' |
| Saturday Night - Sunday Morning | Freezing Level * | 4000' | 2500' | 1500' | ' | ' | 2000' | ' | 2500' |
| Sunday Afternoon - Sunday Night | Freezing Level * | 7500' | 6500' | 5500' | ' | ' | 5500' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 3500' |
| Saturday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level 7500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 3000' |
| Saturday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level 6500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 2500' |
| Saturday Afternoon |
Freezing Level 3500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 3000' |
| Saturday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 4000' |
| Saturday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Afternoon - Sunday Night |
Freezing 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
| Tuesday | Tuesday | |
|---|---|---|
| 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: 10:54 AM PST Saturday, February 21, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | NE 5 - 15 | NE 10 - 20 | N 5 - 15 | --- - | N 5 - 15 |
| Saturday Mid-day | NE 15 - 25 | NE 15 - 25 | E 15 - 25 | --- - | E 10 - 20 |
| Saturday Afternoon | NE 15 - 25 | NE 10 - 20 | E 15 - 25 | --- - | E 20 - 30 |
| Saturday Night - Sunday Morning | NE 10 - 20 | NE 5 - 15 | E 15 - 30 | --- - | E 30 - 45 |
| Sunday Afternoon - Sunday Night | NE 0 - 10 | NE 0 - 10 | E 5 - 15 | --- - | E 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | NE 5 - 15 |
| Saturday Mid-day | NE 15 - 25 |
| Saturday Afternoon | NE 15 - 25 |
| Saturday Night - Sunday Morning | NE 10 - 20 |
| Sunday Afternoon - Sunday Night | NE 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | NE 10 - 20 |
| Saturday Mid-day | NE 15 - 25 |
| Saturday Afternoon | NE 10 - 20 |
| Saturday Night - Sunday Morning | NE 5 - 15 |
| Sunday Afternoon - Sunday Night | NE 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | N 5 - 15 |
| Saturday Mid-day | E 15 - 25 |
| Saturday Afternoon | E 15 - 25 |
| Saturday Night - Sunday Morning | E 15 - 30 |
| Sunday Afternoon - Sunday Night | E 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | --- - |
| Saturday Mid-day | --- - |
| Saturday Afternoon | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon - Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | N 5 - 15 |
| Saturday Mid-day | E 10 - 20 |
| Saturday Afternoon | E 20 - 30 |
| Saturday Night - Sunday Morning | E 30 - 45 |
| Sunday Afternoon - Sunday Night | E 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | NE 5 - 15 |
| Saturday Mid-day | NE 15 - 25 |
| Saturday Afternoon | NE 15 - 25 |
| Saturday Night - Sunday Morning | NE 10 - 20 |
| Sunday Afternoon - Sunday Night | NE 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | NE 10 - 20 |
| Saturday Mid-day | NE 15 - 25 |
| Saturday Afternoon | NE 10 - 20 |
| Saturday Night - Sunday Morning | NE 5 - 15 |
| Sunday Afternoon - Sunday Night | NE 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | N 5 - 15 |
| Saturday Mid-day | E 15 - 25 |
| Saturday Afternoon | E 15 - 25 |
| Saturday Night - Sunday Morning | E 15 - 30 |
| Sunday Afternoon - Sunday Night | E 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Mid-day | --- - |
| Saturday Afternoon | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon - Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | N 5 - 15 |
| Saturday Mid-day | E 10 - 20 |
| Saturday Afternoon | E 20 - 30 |
| Saturday Night - Sunday Morning | E 30 - 45 |
| Sunday Afternoon - Sunday Night | E 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | NE 15 - 25 | N 20 - 30 | N 10 - 20 | --- - | N 15 - 25 |
| Saturday Afternoon | NE 15 - 25 | NE 15 - 25 | NE 15 - 25 | --- - | NE 25 - 35 |
| Saturday Night - Sunday Morning | NE 20 - 30 | NE 15 - 25 | NE 20 - 30 | --- - | NE 35 - 45 |
| Sunday Afternoon | NE 15 - 25 | NE 15 - 25 | NE 15 - 30 | --- - | NE 30 - 40 |
| Sunday Night | N 5 - 15 | N 10 - 20 | NNE 5 - 15 | --- - | NE 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | NE 15 - 25 |
| Saturday Afternoon | NE 15 - 25 |
| Saturday Night - Sunday Morning | NE 20 - 30 |
| Sunday Afternoon | NE 15 - 25 |
| Sunday Night | N 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | N 20 - 30 |
| Saturday Afternoon | NE 15 - 25 |
| Saturday Night - Sunday Morning | NE 15 - 25 |
| Sunday Afternoon | NE 15 - 25 |
| Sunday Night | N 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | N 10 - 20 |
| Saturday Afternoon | NE 15 - 25 |
| Saturday Night - Sunday Morning | NE 20 - 30 |
| Sunday Afternoon | NE 15 - 30 |
| Sunday Night | NNE 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night - Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | N 15 - 25 |
| Saturday Afternoon | NE 25 - 35 |
| Saturday Night - Sunday Morning | NE 35 - 45 |
| Sunday Afternoon | NE 30 - 40 |
| Sunday Night | NE 20 - 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: 10:54 AM PST Saturday, February 21, 2015
Extended Weather Synopsis for Tuesday night through Tuesday
Upper level ridging should slide closer to the coast on Monday and winds should be light, skies sunny, and temperatures mild. An upper level shortwave will begin to dig down in NW flow on Tuesday...and should help usher in some low level moisture and potentially an increase in clouds mainly for the west slopes of the Cascades and Olympics in the afternoon.
A series of upper level disturbances should begin to swing through in N-NW flow aloft Tuesday night and Wednesday, bringing a chance for light rain and snow showers at cooler snow levels to the mountains.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Mostly clear and mild.
Increasing clouds along the Olympics and west slopes of the Cascades, otherwise mostly sunny. Slight cooling trend.
Mostly cloudy with a chance of light rain and snow showers. Cooler.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Monday - Tuesday Morning | Freezing Level | 8500' - 9500' | 8500' - 9500' | 8500' - 9500' | |
| Tuesday Afternoon | Freezing Level | 4500' - 5500' | 5000' - 6000' | 6000' - 7000' | |
| Tuesday Night - Wednesday | Snow Level | 3000' - 4000' | 3000' - 4000' | 3500' - 4500' |
| Mt. Baker | Elevation |
|---|---|
| Monday - Tuesday Morning |
Freezing Level 8500' - 9500' |
| Tuesday Afternoon |
Freezing Level 4500' - 5500' |
| Tuesday Night - Wednesday |
Snow Level 3000' - 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday - Tuesday Morning |
Freezing Level 8500' - 9500' |
| Tuesday Afternoon |
Freezing Level 5000' - 6000' |
| Tuesday Night - Wednesday |
Snow Level 3000' - 4000' |
| Mt. Hood | Elevation |
|---|---|
| Monday - Tuesday Morning |
Freezing Level 8500' - 9500' |
| Tuesday Afternoon |
Freezing Level 6000' - 7000' |
| Tuesday Night - Wednesday |
Snow Level 3500' - 4500' |
* 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 18, 2015
Updated Mt. Hood forecast for today
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.