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 & Saturday
A front passed through the Cascades early this morning and snow levels have generally lowered to around 3500-4000 feet. Cool post-frontal westerly flow will maintain orographic showers that favor the west slopes of the Olympics and Cascades today. The cool air mass will be unstable and isolated thunderstorms can't be ruled out through Monday afternoon.
A Puget Sound convergence zone should form Monday afternoon and evening, with locally higher snow totals most likely near Stevens Pass. Outside of the convergence zone, showers should generally diminish Monday night.
A warm front off Vancouver Island will brush mainly the north and central Washington Cascades and the Olympics on Tuesday with some light rain and snow as a strong upper ridge building around 130 W deflects the bulk of precipitation into central and northern British Columbia. A slow warming trend will ensue on Tuesday, with skies partially clearing in the afternoon for Mt. Hood and the far south Washington Cascades as the front is pushed north. Onshore flow combined with warming aloft should trap low-level moisture against the much of the west slopes of the Cascades. NW winds coming over the top of the ridge will keep alpine winds moderate despite the drying trend Tuesday.
Weather Forecast
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Monday |
Cloudy with light to occasionally moderate rain and snow showers. Cooler. Gusty west winds. Local higher snow accumulations near the Puget Sound convergence zone in the Stevens Pass area this afternoon. |
| Monday Night |
Mostly cloudy with light rain and snow showers decreasing overnight, except occasionally moderate showers near convergence zone likely affecting Stevens or Snoqualmie Pass. |
| Tuesday Morning |
Cloudy with isolated light rain and snow showers. Moderate alpine NW winds. |
| Tuesday Afternoon |
Cloudy with periods of very light rain and snow possible north Cascades. Becoming partly sunny south Washington Cascades. Slow warming trend. Moderate alpine NW winds. |
| Tuesday Night |
Mostly cloudy north Cascades. Partly cloudy south Cascades. Moderate alpine NW winds decreasing overnight. |
Olympics
| Monday |
Mostly cloudy with light to occasionally moderate rain and snow showers. Cooler. Gusty west winds. |
| Monday Night |
Mostly cloudy with light rain and snow showers decreasing overnight. |
| Tuesday Morning |
Cloudy with isolated light rain and snow showers. |
| Tuesday Afternoon |
Cloudy with periods of very light rain and snow possible. Slow warming trend. |
| Tuesday Night |
Mostly cloudy. |
Mt. Hood Area
| Monday |
Cloudy with light to occasionally moderate rain and snow showers. Cooler. Moderate to strong west winds. |
| Monday Night |
Mostly cloudy with light rain and snow showers decreasing overnight. Moderate alpine NW winds. |
| Tuesday Morning |
Mostly cloudy with isolated light rain and snow showers. Moderate alpine NW winds. |
| Tuesday Afternoon |
Partly sunny. Slow warming trend. |
| Tuesday Night |
Partly cloudy. |
East slopes of the Washington Cascades
| Monday |
Mostly cloudy with light rain and snow showers. Cooler. Gusty crest level west winds. Local higher snow accumulations downwind of the Puget Sound convergence zone in the central-east Cascades Monday afternoon. |
| Monday Night |
Partly to mostly cloudy with light rain and snow showers decreasing overnight. |
| Tuesday Morning |
Mostly cloudy. Moderate alpine NW winds. |
| Tuesday Afternoon |
Cloudy with periods of very light rain and snow possible north Cascades. Partly sunny south Washington Cascades. Slow warming trend. Moderate alpine NW winds. |
| Tuesday Night |
Mostly cloudy north Cascades. Mostly clear south Cascades. Moderate alpine NW winds decreasing overnight. |
Issued: 7:42 AM PDT Monday, April 4, 2016
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday | Snow Level | 3500' | 3500' | 3500' | ' | ' | 3500' | ' | 4000' |
| Monday Night - Tuesday Morning | Snow Level | 3000' | 3000' | 3000' | ' | ' | 3000' | ' | 3500' |
| Tuesday Afternoon | Snow Level | 5500' | 5000' | 5000' | ' | ' | 5000' | ' | 7000' |
| Monday Night | Freezing Level | 10000' | 8000' | 9000' | ' | ' | 10000' | ' | 11000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday |
Snow Level 3500' |
| Monday Night - Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 5500' |
| Monday Night |
Freezing Level 10000' |
| Mt. Baker | Elevation |
|---|---|
| Monday |
Snow Level 3500' |
| Monday Night - Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Monday Night |
Freezing Level 8000' |
| Washington Pass | Elevation |
|---|---|
| Monday |
Snow Level 3500' |
| Monday Night - Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Monday Night |
Freezing Level 9000' |
| Leavenworth | Elevation |
|---|---|
| Monday |
Snow Level ' |
| Monday Night - Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Monday Night |
Freezing Level ' |
| Stevens Pass | Elevation |
|---|---|
| Monday |
Snow Level ' |
| Monday Night - Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Monday Night |
Freezing Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday |
Snow Level 3500' |
| Monday Night - Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Monday Night |
Freezing Level 10000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday |
Snow Level ' |
| Monday Night - Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Monday Night |
Freezing Level ' |
| Mt. Hood | Elevation |
|---|---|
| Monday |
Snow Level 4000' |
| Monday Night - Tuesday Morning |
Snow Level 3500' |
| Tuesday Afternoon |
Snow Level 7000' |
| Monday Night |
Freezing Level 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.
Precipitation Forecast
| Saturday | Saturday | |
|---|---|---|
| Hurricane Ridge | LT 0.25 | LT 0.10 |
| Mt Baker Ski Area | 0.50 - 0.75 | LT 0.10 |
| Washington Pass | LT 0.25 | LT 0.10 |
| Stevens Pass | 0.75 - 1.25 | LT 0.10 |
| Snoqualmie Pass | 0.50 - 1.00 | LT 0.25 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.25 | LT 0.10 |
| Paradise | 0.75 - 1.00 | LT 0.10 |
| White Pass | 0 - 0.75 | LT 0.10 |
| Mt Hood Meadows | 0.50 - 0.75 | LT 0.10 |
| Timberline | 0.75 - 1.00 | 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: 7:42 AM PDT Monday, April 4, 2016
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday | WSW 15 - 30 | WSW 15 - 30 | WSW 20 - 35 | --- - | W 20 - 30 |
| Monday Night | W 10 - 20 | W 10 - 20 | W 10 - 20 | --- - | NW 15 - 25 |
| Tuesday | W 0 - 10 | W 5 - 15 | W 5 - 15 | --- - | NW 10 - 20 |
| Tuesday Night | W 0 - 10 | WSW 0 - 10 | W 0 - 10 | --- - | NW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday | WSW 15 - 30 |
| Monday Night | W 10 - 20 |
| Tuesday | W 0 - 10 |
| Tuesday Night | W 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Monday | WSW 15 - 30 |
| Monday Night | W 10 - 20 |
| Tuesday | W 5 - 15 |
| Tuesday Night | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday | WSW 20 - 35 |
| Monday Night | W 10 - 20 |
| Tuesday | W 5 - 15 |
| Tuesday Night | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Monday | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday | W 20 - 30 |
| Monday Night | NW 15 - 25 |
| Tuesday | NW 10 - 20 |
| Tuesday Night | NW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday | WSW 15 - 30 |
| Monday Night | W 10 - 20 |
| Tuesday | W 0 - 10 |
| Tuesday Night | W 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday | WSW 15 - 30 |
| Monday Night | W 10 - 20 |
| Tuesday | W 5 - 15 |
| Tuesday Night | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday | WSW 20 - 35 |
| Monday Night | W 10 - 20 |
| Tuesday | W 5 - 15 |
| Tuesday Night | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday | W 20 - 30 |
| Monday Night | NW 15 - 25 |
| Tuesday | NW 10 - 20 |
| Tuesday Night | NW 5 - 15 |
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 | W 25 - 35 | W 30 - 40 | WNW 30 - 40 | --- - | W 35 - 45 |
| Monday Night - Tuesday Morning | NW 15 - 25 | NW 20 - 30 | NW 25 - 35 | --- - | NW 35 - 45 |
| Tuesday Afternoon | NW 30 - 40 | NW 30 - 40 | NW 40 - 50 | --- - | NW 25 - 35 |
| Tuesday Night | NW 30 - 40 | NW 30 - 40 | NW 25 - 35 | --- - | NNW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday | W 25 - 35 |
| Monday Night - Tuesday Morning | NW 15 - 25 |
| Tuesday Afternoon | NW 30 - 40 |
| Tuesday Night | NW 30 - 40 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday | W 30 - 40 |
| Monday Night - Tuesday Morning | NW 20 - 30 |
| Tuesday Afternoon | NW 30 - 40 |
| Tuesday Night | NW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday | WNW 30 - 40 |
| Monday Night - Tuesday Morning | NW 25 - 35 |
| Tuesday Afternoon | NW 40 - 50 |
| Tuesday Night | NW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday | W 35 - 45 |
| Monday Night - Tuesday Morning | NW 35 - 45 |
| Tuesday Afternoon | NW 25 - 35 |
| Tuesday Night | NNW 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.
Issued: 7:42 AM PDT Monday, April 4, 2016
Extended Weather Synopsis for Saturday night through Saturday
Warm weather with sunshine and high freezing levels will return Wednesday through Friday as a broad upper level ridge builds along the west coast. A weak and splitting frontal system approaching the coast on Friday should nudge the upper level ridge axis inland and bring in slightly cooler air for the west slopes of the Cascades and Olympics as well as introduce the chance of an afternoon mountain showers.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Mostly cloudy north Cascades in the morning, mostly clear south Cascades and Mt. Hood. Mostly sunny and warm everywhere in the afternoon.
Mostly clear. Warm.
Partly to mostly sunny, chance of afternoon mountain showers. Slightly cooler west slopes of the Cascades and Olympics.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday - Wednesday Night | Freezing Level | 10500' - 11500' | 11000' - 12000' | 12000' - 13000' | |
| Thursday - Thursday Night | Freezing Level | 12000' - 13000' | 12000' - 13000' | 12000' - 13000' | |
| Friday | Freezing Level | 9000' - 10000' | 9500' - 10500' | 10000' - 11000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 10500' - 11500' |
| Thursday - Thursday Night |
Freezing Level 12000' - 13000' |
| Friday |
Freezing Level 9000' - 10000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 11000' - 12000' |
| Thursday - Thursday Night |
Freezing Level 12000' - 13000' |
| Friday |
Freezing Level 9500' - 10500' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday - Wednesday Night |
Freezing Level 12000' - 13000' |
| Thursday - Thursday Night |
Freezing Level 12000' - 13000' |
| Friday |
Freezing Level 10000' - 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 Apr 3, 2016
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