Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Tuesday
A weak weather system will sweep through the area Sunday night into Monday morning bringing light precipitation and windy conditions to most locations. This first storm isn't too much to get excited about. Snow accumulations appear modest, with the bulk of the activity focuses on the Cascade volcanoes in the southern part of the region. At these trailheads, you could find as much as 6-8" by Monday afternoon. As the system exits the region, look for winds to turn more northwesterly and decrease, at least for the morning hours. Scattered showers will remain in many of the usual locations like Baker, Rainier, Hood, and the Passes. Other spots will be drier, but don't rule out a stray shower dropping a dusting of snow.
The lull in the weather will be short-lived as a much larger and well-developed storm system approaches the Northwest Tuesday. A warm front associated with the low-pressure will cause snow levels to rise during the day. Fortunately, at the moment, there doesn't appear to be too much precipitation associate with the warming. Heavier precipitation arrives with colder air in the afternoon and early evening. Sites further west and north should experience significant rain and snow before sunset, while other locations won't see the bulk of the precipitation reach them till the evening hours.
Weather Forecast
Hurricane Ridge
| Sunday Night | Rain and snow showers. Light southerly winds. |
| Monday | Cloudy with isolated rain and snow showers. Calm and variable winds. |
Mt. Baker
| Sunday Night | Rain and snow. Moderate southerly winds. |
| Monday | Cloudy with rain and snow showers. Winds decreasing in the morning. |
Washington Pass and Leavenworth
| Sunday Night | Mostly cloudy with isolated rain and snow showers. Light southwesterly winds. |
| Monday | Mostly cloudy. Light to moderate westerly winds. |
Stevens and Snoqualmie Pass
| Sunday Night | Rain and snow showers. Easterly flow at the Passes turning westerly overnight. Moderate westerly ridgetop winds. |
| Monday | Cloudy with scattered showers. Light to moderate westerly ridgetop winds. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Rain and snow heaviest near the volcanoes. Moderate ridgetop winds. |
| Monday | Cloudy with rain and snow showers heaviest near the volcanoes. Winds decreasing in the morning. |
Mt. Hood
| Sunday Night | Rain and snow, especially after mid-night. Moderate to strong westerly winds. |
| Monday | Cloudy with rain and snow showers in the morning. Moderate westerly winds. |
Issued: 1:53 PM PST Sunday, November 22, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Evening | Snow Level * | 3500' | 2500' | 2500' | 2500' | 3000' | 3000' | 4000' | 4000' |
| Sunday Night | Snow Level | 3000' | 2500' | 2000' | 2500' | 3000' | 3000' | 3500' | 3500' |
| Monday Morning | Snow Level | 3000' | 2500' | 2500' | 2500' | 2500' | 2500' | 3000' | 3500' |
| Monday Afternoon | Snow Level | 3500' | 3000' | 3000' | 3000' | 3500' | 3500' | 4000' | 3500' |
| Monday Evening | Snow Level | 3500' | 2500' | 2500' | 2500' | 3000' | 3500' | 3500' | 3500' |
| Monday Night | Snow Level | 3500' | 2500' | 2000' | 2000' | 3500' | 3500' | 3500' | 3500' |
| Tuesday Morning | Snow Level | 4000' | 3000' | 3000' | 3000' | 4000' | 4000' | 4000' | 4000' |
| Tuesday Afternoon | Snow Level * | 4500' | 4000' | 3500' | 3500' | 4000' | 4000' | 4500' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2500' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Evening |
Snow Level 2500' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Evening |
Snow Level 2500' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2500' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Evening |
Snow Level 2500' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 3500' |
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 3500' |
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4500' (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 Night | Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | LT 0.10 | 0 | 0.50 |
| Mt Baker Ski Area | LT 0.25 | LT 0.10 | LT 0.10 | 0.50 - 0.75 |
| Washington Pass | LT 0.10 | 0 | 0 | LT 0.10 |
| Leavenworth | LT 0.10 | 0 | 0 | LT 0.10 |
| Stevens Pass | LT 0.25 | LT 0.10 | LT 0.10 | LT 0.25 |
| Snoqualmie Pass | LT 0.25 | LT 0.25 | LT 0.10 | LT 0.10 |
| Mission Ridge | LT 0.10 | 0 | 0 | 0 |
| Crystal Mt | LT 0.25 | LT 0.10 | 0 | LT 0.10 |
| Paradise | 0.25 - 0.50 | LT 0.25 | LT 0.10 | LT 0.25 |
| White Pass | LT 0.25 | LT 0.25 | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | 0.25 | 0.50 | LT 0.10 | LT 0.10 |
| Timberline | 0.25 | 0.50 | LT 0.10 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | 0.50 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0.50 - 0.75 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0.25 - 0.50 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0.25 |
| Tuesday | 0.50 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | 0.25 |
| Tuesday | 0.50 |
| Tuesday Night | LT 0.10 |
| Tuesday | 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: 1:53 PM PST Sunday, November 22, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SW 5 - 15 | S 15 - 25 | S 10 - 20 | SW 10 - 20 | WSW 10 - 20 |
| Sunday Night | S 5 - 15 | S 15 - 25 | WSW 10 - 20 | WSW 10 - 20 | W 20 - 30 |
| Monday Morning | VAR 0 - 10 | S 5 - 15 | W 5 - 15 | WSW 5 - 15 | W 15 - 25 |
| Monday Afternoon | SW 5 - 15 | SW 5 - 15 | W 5 - 15 | WSW 5 - 15 | W 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SW 5 - 15 |
| Sunday Night | S 5 - 15 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | S 15 - 25 |
| Sunday Night | S 15 - 25 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | S 10 - 20 |
| Sunday Night | WSW 10 - 20 |
| Monday Morning | W 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | SW 10 - 20 |
| Sunday Night | WSW 10 - 20 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | WSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | W 20 - 30 |
| Monday Morning | W 15 - 25 |
| Monday Afternoon | W 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SW 5 - 15 |
| Sunday Night | S 5 - 15 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | S 15 - 25 |
| Sunday Night | S 15 - 25 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | S 10 - 20 |
| Sunday Night | WSW 10 - 20 |
| Monday Morning | W 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SW 10 - 20 |
| Sunday Night | WSW 10 - 20 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | W 20 - 30 |
| Monday Morning | W 15 - 25 |
| Monday Afternoon | W 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 | |
|---|---|---|---|---|---|
| Sunday Evening | WSW 20 - 30 | WSW 15 - 25 | WSW 25 - 35 | WSW 20 - 30 | WSW 20 - 30 |
| Sunday Night | SW 15 - 25 | WSW 15 - 25 | W 25 - 35 | WSW 25 - 35 | WSW 35 - 45 |
| Monday Morning | WNW 5 - 15 | WNW 5 - 15 | WNW 15 - 25 | WNW 15 - 25 | WNW 20 - 30 |
| Monday Afternoon | W 10 - 20 | W 10 - 20 | W 15 - 25 | WNW 15 - 25 | NW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | WSW 20 - 30 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | WNW 5 - 15 |
| Monday Afternoon | W 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | WNW 5 - 15 |
| Monday Afternoon | W 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | WSW 25 - 35 |
| Sunday Night | W 25 - 35 |
| Monday Morning | WNW 15 - 25 |
| Monday Afternoon | W 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | WSW 20 - 30 |
| Sunday Night | WSW 25 - 35 |
| Monday Morning | WNW 15 - 25 |
| Monday Afternoon | WNW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | WSW 20 - 30 |
| Sunday Night | WSW 35 - 45 |
| Monday Morning | WNW 20 - 30 |
| Monday Afternoon | NW 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: 1:53 PM PST Sunday, November 22, 2020
Extended Weather Synopsis for Tuesday night through Tuesday
A strong storm system will impact the region right as we move into the extended forecast period. Look for precipitation to continue in the mountains Tuesday night as the cold front continues to sweep across the area and brings snow levels back down. The associated low-pressure finally moves through Wednesday, keeping plenty of shower activity dropping snow on the west-slopes of the Cascades. Right now, the highest accumulations appear to be around the volcanoes and a Puget Sound Convergence Zone. Look for precipitation to taper from north to south late Wednesday evening. A weak high-pressure ridge appears to shift into the Northwest Thursday providing us a break in the weather and a nice Thanksgiving day.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 2500' - 4000' | 2500' - 4000' | 3000' - 4500' | * |
| Wednesday | Snow Level | 2000' - 3000' | 2500' - 3500' | 3000' - 4000' | |
| Wednesday Night | Snow Level | 1500' - 3000' | 2000' - 3000' | 3000' - 4000' | |
| Thursday | Snow Level | 2000' - 3000' | 2000' - 3000' | 3000' - 4000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2500' - 4000' (Easterly Flow *) |
| Wednesday |
Snow Level 2000' - 3000' |
| Wednesday Night |
Snow Level 1500' - 3000' |
| Thursday |
Snow Level 2000' - 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2500' - 4000' (Easterly Flow *) |
| Wednesday |
Snow Level 2500' - 3500' |
| Wednesday Night |
Snow Level 2000' - 3000' |
| Thursday |
Snow Level 2000' - 3000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 3000' - 4500' (Easterly Flow *) |
| Wednesday |
Snow Level 3000' - 4000' |
| Wednesday Night |
Snow Level 3000' - 4000' |
| Thursday |
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 Nov 21, 2020
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