Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Friday night through Monday
Increasing SSW winds on Friday ahead of an approaching frontal system brought mild air into much of the southern/central Cascades and Olympics. The north Cascades should largely avoid these mild temperatures. Snow levels will remain high at first as the frontal precipitation moves from NW to SE overnight. The weakening front should bring a quick shot of rain and snow, 0.25-0.50" for most of the west slopes of the Cascades, with lighter precipitation reaching further east. Temperatures cool rapidly behind the front, changing some rain to snow. Mt. Baker stands to pick up 4-7" of snow out of this system, but may see a brief mix of rain at ski area base in the evening hours. Stevens Pass should see a period of rain before a changeover to snow with 2-4" of snow accumulation expected. Snoqualmie Pass should remain mostly too warm at pass level, where primarily mid and upper elevations will see accumulating snows. Moderate winds will accompany the precipitation Friday night and will be slightly stronger E of the Cascade Crest. By Saturday morning, light rain and snow reaches Mt. Hood, with only a few lingering snow showers further north.
A ridge quickly replaces the fizzled front later Saturday morning so the region should see more sun than clouds by afternoon along with seasonable temperatures. The clear weather should continue Saturday night and early Sunday with light southerly flow aloft. Cooler air lingers E of the Cascade Crest while warmer air returns west of the crest, driving moderate E flow through the passes that might impact you.
Weather Forecast
Hurricane Ridge
| Friday Night | Generally light rain changing to snow at mid-elevations as temperatures cool rapidly. Precipitation ending after midnight. Moderate winds in the evening, then becoming light. |
| Saturday | Cool with increasing sunshine. Light winds. |
Mt. Baker
| Friday Night | Light to moderate rain and snow. A slight increase in snow level during the evening hours then cooling overnight. Moderate winds gusting strong in the evening, then decreasing. |
| Saturday | Snow flurries early, with increasing partial sunshine. Cooler. Light winds. |
Washington Pass and Leavenworth
| Friday Night | Light snow developing in the north during the evening. Precipitaton spreading southward, with rain and high elevation snow further south. Precipitation tapering by morning. Cooling temperatures after midnight transitions some rain to snow. Moderate to strong winds in the evening, decreasing after midnight. |
| Saturday | Mostly sunny and cool. |
Stevens and Snoqualmie Pass
| Friday Night | Light to moderate rain snow. Snow starting above pass level, but dropping to Stevens Pass level from late evening onwards. Snoqualmie stays mostly liquid at pass level. Moderate 5000 ft winds developing and peaking overnight. Pass-level winds variable early then light westerly. |
| Saturday | Light snow (and rain) showers ending early. Cooler. Becoming partly to mostly sunny by afternoon. Moderate winds early becoming light. Light to occasionally moderate W winds at pass level peaking in the morning. |
Mt. Rainier, Crystal and White Pass
| Friday Night | Mild with light rain and snow developing overnight. Cooling after midnight. Decreasing moderate winds. |
| Saturday | Light snow (and rain) showers ending early. Cooler. Becoming partly to mostly sunny by afternoon. Light winds. |
Mt. Hood
| Friday Night | Increasing clouds. Very mild. Moderate winds with strong gusts developing. |
| Saturday | Light rain and snow in the morning along with rapid cooling, then mostly cloudy skies in the afternoon. Moderate winds becoming light in the afternoon. |
Issued: 2:11 PM PST Friday, November 27, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Evening | Snow Level | 6000' | 3500' | 3500' | 6000' | 5500' | 6500' | 7000' | 9500' |
| Friday Night | Snow Level | 4000' | 3000' | 3000' | 5500' | 4000' | 4500' | 5500' | 8000' |
| Saturday Morning | Snow Level | 3000' | 2500' | 3000' | 4000' | 3500' | 3500' | 4500' | 5500' |
| Saturday Afternoon | Snow Level | 3000' | 2500' | 3000' | 3500' | 3000' | 3000' | 4000' | 5500' |
| Saturday Evening | Freezing Level * | 4000' | 3000' | 3000' | 4000' | 3000' | 3000' | 5000' | 6500' |
| Saturday Night | Freezing Level * | 7000' | 3500' | 3000' | 3000' | 4000' | 5500' | 6000' | 8000' |
| Sunday Morning | Freezing Level * | 7500' | 3500' | 3000' | 3000' | 3500' | 6000' | 6500' | 7500' |
| Sunday Afternoon | Freezing Level * | 8000' | 5500' | 3500' | 3500' | 4000' | 6000' | 7000' | 8500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening |
Snow Level 6000' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Freezing Level 4000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 7000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening |
Snow Level 3500' |
| Friday Night |
Snow Level 3000' |
| Saturday Morning |
Snow Level 2500' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 3500' |
| Friday Night |
Snow Level 3000' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Friday Evening |
Snow Level 6000' |
| Friday Night |
Snow Level 5500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 3500' |
| Saturday Evening |
Freezing Level 4000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 5500' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 4000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 6500' |
| Friday Night |
Snow Level 4500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 5500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Evening |
Snow Level 7000' |
| Friday Night |
Snow Level 5500' |
| Saturday Morning |
Snow Level 4500' |
| Saturday Afternoon |
Snow Level 4000' |
| Saturday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 6000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 6500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening |
Snow Level 9500' |
| Friday Night |
Snow Level 8000' |
| Saturday Morning |
Snow Level 5500' |
| Saturday Afternoon |
Snow Level 5500' |
| Saturday Evening |
Freezing Level 6500' (Easterly Flow *) |
| Saturday Night |
Freezing Level 8000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 8500' (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
| Friday Night | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.25 | 0 | 0 | LT 0.10 |
| Mt Baker Ski Area | 0.50 | 0 | 0 | 0 |
| Washington Pass | LT 0.25 | 0 | 0 | 0 |
| Leavenworth | LT 0.10 | 0 | 0 | 0 |
| Stevens Pass | 0.25 - 0.50 | LT 0.10 | 0 | 0 |
| Snoqualmie Pass | 0.25 - 0.50 | LT 0.10 | 0 | 0 |
| Mission Ridge | LT 0.10 | 0 | 0 | 0 |
| Crystal Mt | LT 0.25 | LT 0.10 | 0 | 0 |
| Paradise | 0.25 - 0.50 | LT 0.10 | 0 | 0 |
| White Pass | LT 0.25 | LT 0.10 | 0 | 0 |
| Mt Hood Meadows | 0 | LT 0.25 | 0 | 0 |
| Timberline | 0 | LT 0.25 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | 0 |
| Monday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | 0 |
| Monday | 0 |
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: 2:11 PM PST Friday, November 27, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | SW 20 - 30 | S 15 - 25 | WSW 10 - 20 | SW 10 - 20 | WSW 10 - 20 |
| Friday Night | WSW 5 - 15 | WSW 10 - 20 | W 15 - 25 | WSW 15 - 25 | WSW 15 - 25 |
| Saturday Morning | S 0 - 10 | WSW 0 - 10 | W 10 - 20 | W 5 - 15 | W 15 - 25 |
| Saturday Afternoon | S 0 - 10 | WSW 0 - 10 | W 0 - 10 | SW 0 - 10 | W 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening | SW 20 - 30 |
| Friday Night | WSW 5 - 15 |
| Saturday Morning | S 0 - 10 |
| Saturday Afternoon | S 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening | S 15 - 25 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | WSW 0 - 10 |
| Saturday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | W 15 - 25 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Evening | SW 10 - 20 |
| Friday Night | WSW 15 - 25 |
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | SW 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | WSW 15 - 25 |
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Evening | SW 20 - 30 |
| Friday Night | WSW 5 - 15 |
| Saturday Morning | S 0 - 10 |
| Saturday Afternoon | S 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | S 15 - 25 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | WSW 0 - 10 |
| Saturday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | W 15 - 25 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | SW 10 - 20 |
| Friday Night | WSW 15 - 25 |
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | SW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | WSW 15 - 25 |
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 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 | |
|---|---|---|---|---|---|
| Friday Evening | SW 40 - 55 | WSW 45 - 65 | WSW 40 - 55 | WSW 35 - 50 | WSW 30 - 40 |
| Friday Night | WSW 35 - 50 | WSW 35 - 50 | WSW 40 - 55 | WSW 35 - 50 | W 35 - 50 |
| Saturday Morning | W 15 - 25 | W 25 - 35 | W 25 - 35 | W 20 - 30 | W 20 - 30 |
| Saturday Afternoon | W 15 - 25 | W 10 - 20 | W 15 - 25 | W 10 - 20 | WNW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | SW 40 - 55 |
| Friday Night | WSW 35 - 50 |
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Evening | WSW 45 - 65 |
| Friday Night | WSW 35 - 50 |
| Saturday Morning | W 25 - 35 |
| Saturday Afternoon | W 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | WSW 40 - 55 |
| Friday Night | WSW 40 - 55 |
| Saturday Morning | W 25 - 35 |
| Saturday Afternoon | W 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | WSW 35 - 50 |
| Friday Night | WSW 35 - 50 |
| Saturday Morning | W 20 - 30 |
| Saturday Afternoon | W 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | WSW 30 - 40 |
| Friday Night | W 35 - 50 |
| Saturday Morning | W 20 - 30 |
| Saturday Afternoon | 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: 2:11 PM PST Friday, November 27, 2020
Extended Weather Synopsis for Monday night through Monday
E flow with mild temperatures west of the Cascade crest continues on Sunday night as the ridge yields to a system arriving from the west. A weak warm front is expected to brush NW Washington overnight, followed by a cold front arriving early Monday morning. This front should switch the pass-level winds back westerly, cooling the west slopes behind the front. Most models have the system bringing light to occasionally moderate rain and snow through Monday, but the European Model has the system splitting, with most of the energy and moisture shunted either down to Oregon or north into British Columbia. Monday night should bring clearing to most parts of the Cascades as a strong ridge moves in and is projected to bring the region a sunny and mild day on Tuesday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday Night | Snow Level | 3500' - 4500' | 4000' - 5000' | 6500' - 7500' | * |
| Monday | Snow Level | 3000' - 4000' | 3500' - 4500' | 3500' - 5500' | |
| Monday Night | Snow Level | 1500' - 3000' | 2000' - 3000' | 2000' - 3000' | |
| Tuesday | Freezing Level | 2500' - 3500' | 2500' - 3500' | 3000' - 5000' | * |
| Mt. Baker | Elevation |
|---|---|
| Sunday Night |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Monday |
Snow Level 3000' - 4000' |
| Monday Night |
Snow Level 1500' - 3000' |
| Tuesday |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Monday |
Snow Level 3500' - 4500' |
| Monday Night |
Snow Level 2000' - 3000' |
| Tuesday |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night |
Snow Level 6500' - 7500' (Easterly Flow *) |
| Monday |
Snow Level 3500' - 5500' |
| Monday Night |
Snow Level 2000' - 3000' |
| Tuesday |
Freezing Level 3000' - 5000' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Nov 27, 2020
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