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 & Sunday
A Puget Sound convergence zone that narrowed in on Snoqualmie Pass Sunday evening has become scattered snow showers along the west slopes Monday morning as the flow aloft has turned more northerly. Snow levels will remain seasonally cool on Monday.
Wrap around clouds from the broad upper low that passed through Sunday will slide south over the Cascades through late morning. A clearing trend is indicated for the afternoon as high pressure begins build offshore and noses into British Columbia. However, warming aloft and the weak onshore flow should keep a fair amount of moisture banked up along the west slopes. Forecast soundings indicated the clouds capped around crest level, with a full clearing trend for the upper volcanoes. Isolated showers will be possible through the early evening, including for the higher terrain of the east slopes.
As the broad upper level low digs over Nevada and Utah and high pressure builds to our north, the PNW will be caught in moderate NE flow. Northeasterly winds will stay brisk at Cascade crest level through Tuesday night. A slow warming trend should be seen over the short term.
Weather Forecast
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Monday Morning |
Cloudy north and central Cascades, mostly cloudy south Cascades. Scattered light snow showers. |
| Monday Afternoon - Monday Evening |
Mostly to partly cloudy with isolated light rain and snow showers. |
| Monday Night - Tuesday Night |
Mostly clear. Slow warming trend. Moderate crest level NE winds. |
Olympics
| Monday Morning |
Partly to mostly clear with isolated light snow showers. |
| Monday Afternoon - Monday Evening |
Partly to mostly sunny. |
| Monday Night - Tuesday Night |
Mostly clear. Warming trend. |
Mt. Hood Area
| Monday Morning |
Mostly cloudy with isolated light snow showers. |
| Monday Afternoon - Monday Evening |
Partly sunny. |
| Monday Night - Tuesday Night |
Mostly clear. Slow warming trend. Moderate mid-mountain and moderate to occasionally strong alpine NE winds beginning Tuesday morning. |
East slopes of the Washington Cascades
| Monday Morning |
Cloudy northeast and centraleast Cascades with scattered light snow showers. Partly to mostly cloudy southeast Cascades. |
| Monday Afternoon - Monday Evening |
Mostly cloudy with isolated light rain and snow showers higher terrain. |
| Monday Night - Tuesday Night |
Mostly clear. Slow warming trend. Moderate crest level NE winds. |
Issued: 7:38 AM PDT Monday, March 28, 2016
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday - Morning | Snow Level | 2500' | 2500' | 2000' | ' | ' | 2000' | ' | 2500' |
| Monday Afternoon | Snow Level | 4500' | 4500' | 4000' | ' | ' | 4500' | ' | 4000' |
| Monday Night - Tuesday Morning | Freezing Level | 5500' | 3500' | 3000' | ' | ' | 4000' | ' | 5000' |
| Tuesday Afternoon | Freezing Level | 8000' | 7000' | 7000' | ' | ' | 7000' | ' | 6500' |
| Tuesday Night | Freezing Level * | 9000' | 8500' | 8000' | ' | ' | 8000' | ' | 8000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday - Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 4500' |
| Monday Night - Tuesday Morning |
Freezing Level 5500' |
| Tuesday Afternoon |
Freezing Level 8000' |
| Tuesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday - Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 4500' |
| Monday Night - Tuesday Morning |
Freezing Level 3500' |
| Tuesday Afternoon |
Freezing Level 7000' |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday - Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Night - Tuesday Morning |
Freezing Level 3000' |
| Tuesday Afternoon |
Freezing Level 7000' |
| Tuesday Night |
Freezing Level 8000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday - Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night - Tuesday Morning |
Freezing Level ' |
| Tuesday Afternoon |
Freezing Level ' |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday - Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night - Tuesday Morning |
Freezing Level ' |
| Tuesday Afternoon |
Freezing Level ' |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday - Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 4500' |
| Monday Night - Tuesday Morning |
Freezing Level 4000' |
| Tuesday Afternoon |
Freezing Level 7000' |
| Tuesday Night |
Freezing Level 8000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday - Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night - Tuesday Morning |
Freezing Level ' |
| Tuesday Afternoon |
Freezing Level ' |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday - Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Night - Tuesday Morning |
Freezing Level 5000' |
| Tuesday Afternoon |
Freezing Level 6500' |
| Tuesday Night |
Freezing Level 8000' (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 0.10 | 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 0.25 | 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: 7:38 AM PDT Monday, March 28, 2016
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday | N 0 - 10 | N 5 - 15 | NW 5 - 15 | --- - | NW 5 - 20 |
| Monday Night | NE 5 - 15 | NE 5 - 15 | NE 5 - 15 | --- - | NE 5 - 15 |
| Tuesday | NE 10 - 20 | NE 10 - 20 | NNE 5 - 15 | --- - | NE 10 - 20 |
| Tuesday Night | NE 5 - 15 | NE 5 - 15 | E 10 - 20 | --- - | NE 15 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday | N 0 - 10 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Monday | N 5 - 15 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday | NW 5 - 15 |
| Monday Night | NE 5 - 15 |
| Tuesday | NNE 5 - 15 |
| Tuesday Night | E 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Monday | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday | NW 5 - 20 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 15 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday | N 0 - 10 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday | N 5 - 15 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday | NW 5 - 15 |
| Monday Night | NE 5 - 15 |
| Tuesday | NNE 5 - 15 |
| Tuesday Night | E 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday | NW 5 - 20 |
| Monday Night | NE 5 - 15 |
| Tuesday | NE 10 - 20 |
| Tuesday Night | NE 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | N 15 - 25 | N 30 - 40 | N 10 - 20 | --- - | N 15 - 25 |
| Monday Afternoon | NNE 20 - 30 | NNE 20 - 30 | NNE 10 - 20 | --- - | NNE 15 - 25 |
| Monday Night - Tuesday Morning | NE 30 - 40 | NE 25 - 35 | NE 10 - 20 | --- - | NE 20 - 30 |
| Tuesday Afternoon - Tuesday Evening | NE 25 - 35 | NE 20 - 30 | NE 25 - 35 | --- - | NE 35 - 45 |
| Tuesday Night | NE 15 - 25 | NE 10 - 20 | NE 10 - 20 | --- - | ENE 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | N 15 - 25 |
| Monday Afternoon | NNE 20 - 30 |
| Monday Night - Tuesday Morning | NE 30 - 40 |
| Tuesday Afternoon - Tuesday Evening | NE 25 - 35 |
| Tuesday Night | NE 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | N 30 - 40 |
| Monday Afternoon | NNE 20 - 30 |
| Monday Night - Tuesday Morning | NE 25 - 35 |
| Tuesday Afternoon - Tuesday Evening | NE 20 - 30 |
| Tuesday Night | NE 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | N 10 - 20 |
| Monday Afternoon | NNE 10 - 20 |
| Monday Night - Tuesday Morning | NE 10 - 20 |
| Tuesday Afternoon - Tuesday Evening | NE 25 - 35 |
| Tuesday Night | NE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon - Tuesday Evening | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | N 15 - 25 |
| Monday Afternoon | NNE 15 - 25 |
| Monday Night - Tuesday Morning | NE 20 - 30 |
| Tuesday Afternoon - Tuesday Evening | NE 35 - 45 |
| Tuesday Night | ENE 30 - 40 |
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: 7:38 AM PDT Monday, March 28, 2016
Extended Weather Synopsis for Sunday night through Sunday
The amplified upper level ridge will nudge over the Pacific coast-line by Thursday. Freezing levels will rise midweek, averaging around 10000 feet through Friday with mostly clear skies. Moderate NE crest level winds should ease off on Wednesday as the upper level low pressure over the intermountain west weakens and slides to the east.
Extended Weather
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
Mostly clear and warm.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday - Wednesday Night | Freezing Level | 9000' - 10000' | 9000' - 10000' | 9500' - 10500' | |
| Thursday - Friday | Freezing Level | 9500' - 11000' | 9500' - 11000' | 9500' - 11000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 9000' - 10000' |
| Thursday - Friday |
Freezing Level 9500' - 11000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 9000' - 10000' |
| Thursday - Friday |
Freezing Level 9500' - 11000' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 9500' - 10500' |
| Thursday - Friday |
Freezing Level 9500' - 11000' |
* 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 23, 2016
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