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 & Saturday
An upper trough moves to the east during the day on Sunday. A ridge builds over the region Sunday night with the ridge axis over the coastal waters. On Monday, the ridge continues to build over the region with the axis along the U.S. coastal waters.
Weather Forecast
Olympics
| Sunday |
Mostly sunny. |
| Sunday Night |
Mostly clear. |
| Monday |
Mostly sunny. |
| Monday Night |
Mostly clear. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Sunday |
Partly cloudy in the north. Mostly cloudy in the central and south with light showers mostly in the central part, decreasing or ending. |
| Sunday Night |
Decreasing clouds with light showers ending in the the central part during the evening. |
| Monday |
Mostly sunny. |
| Monday Night |
Mostly clear. |
East slopes of the Washington Cascades
| Sunday |
Mostly sunny in the north. Partly clouding in the central and south with light showers at higher elevations, mainly in the central part, decreasing and ending. |
| Sunday Night |
Mostly clear with scattered clouds decreasing at higher elevations. |
| Monday |
Mostly sunny. |
| Monday Night |
Mostly clear. |
Mt. Hood Area
| Sunday |
Cloudy with decreasing light showers. |
| Sunday Night |
Light showers ending by midnight, then mostly clear. |
| Monday |
Decreasing clouds in the morning. Becoming mostly sunny in the afternoon. |
| Monday Night |
Mostly clear. |
Issued: 10:53 AM PST Sunday, December 3, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Afternoon | Snow Level | 2000' | 2000' | 2000' | ' | ' | 2000' | ' | 2500' |
| Sunday Night | Snow Level | 1500' | 500' | 500' | ' | ' | 500' | ' | 1000' |
| Monday Morning | Freezing Level | 3000' | 1500' | 1500' | ' | ' | 2000' | ' | 3000' |
| Monday Afternoon | Freezing Level | 3000' | 1500' | 1500' | ' | ' | 2000' | ' | 3000' |
| Monday Night | Freezing Level * | 3500' | 1500' | 2000' | ' | ' | 2500' | ' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 1500' |
| Monday Morning |
Freezing Level 3000' |
| Monday Afternoon |
Freezing Level 3000' |
| Monday Night |
Freezing Level 3500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 500' |
| Monday Morning |
Freezing Level 1500' |
| Monday Afternoon |
Freezing Level 1500' |
| Monday Night |
Freezing Level 1500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 500' |
| Monday Morning |
Freezing Level 1500' |
| Monday Afternoon |
Freezing Level 1500' |
| Monday Night |
Freezing Level 2000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 500' |
| Monday Morning |
Freezing Level 2000' |
| Monday Afternoon |
Freezing Level 2000' |
| Monday Night |
Freezing Level 2500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Freezing Level 3000' |
| Monday Afternoon |
Freezing Level 3000' |
| Monday Night |
Freezing Level 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.
Precipitation Forecast
| Saturday | Saturday | |
|---|---|---|
| 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 0.25 | LT 0.10 |
| Paradise | LT 0.25 | LT 0.10 |
| White Pass | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | LT 0.25 | LT 0.10 |
| Timberline | 0.25 - 0.50 | 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: 10:53 AM PST Sunday, December 3, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Afternoon | W 5 - 10 | W 5 - 10 | W 10 - 15 | --- - | W 25 - 35 |
| Sunday Night | NW 0 - 10 | W 0 - 10 | WNW 5 - 10 | --- - | W 20 - 25 |
| Monday Morning | WNW 5 - 10 | W 0 - 10 | WNW 10 - 15 | --- - | W 20 - 25 |
| Monday Afternoon | WNW 5 - 10 | W 0 - 10 | WNW 10 - 15 | --- - | WNW 5 - 10 |
| Monday Night | NNW 5 - 10 | VAR 0 - 10 | E 0 - 10 | --- - | E 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon | W 5 - 10 |
| Sunday Night | NW 0 - 10 |
| Monday Morning | WNW 5 - 10 |
| Monday Afternoon | WNW 5 - 10 |
| Monday Night | NNW 5 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon | W 5 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon | W 10 - 15 |
| Sunday Night | WNW 5 - 10 |
| Monday Morning | WNW 10 - 15 |
| Monday Afternoon | WNW 10 - 15 |
| Monday Night | E 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon | W 25 - 35 |
| Sunday Night | W 20 - 25 |
| Monday Morning | W 20 - 25 |
| Monday Afternoon | WNW 5 - 10 |
| Monday Night | E 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Afternoon | W 5 - 10 |
| Sunday Night | NW 0 - 10 |
| Monday Morning | WNW 5 - 10 |
| Monday Afternoon | WNW 5 - 10 |
| Monday Night | NNW 5 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | W 5 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | W 10 - 15 |
| Sunday Night | WNW 5 - 10 |
| Monday Morning | WNW 10 - 15 |
| Monday Afternoon | WNW 10 - 15 |
| Monday Night | E 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | W 25 - 35 |
| Sunday Night | W 20 - 25 |
| Monday Morning | W 20 - 25 |
| Monday Afternoon | WNW 5 - 10 |
| Monday Night | E 0 - 10 |
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 Afternoon | NW 15 - 20 | NW 20 - 25 | NW 25 - 30 | --- - | NW 30 - 40 |
| Sunday Night | NNW 20 - 25 | NNW 20 - 25 | NNW 25 - 35 | --- - | NNW 25 - 35 |
| Monday Morning | NW 20 - 25 | NW 10 - 15 | NW 25 - 30 | --- - | NNW 20 - 25 |
| Monday Afternoon | NNW 15 - 20 | NW 10 - 15 | NW 30 - 40 | --- - | NW 15 - 20 |
| Monday Night | NNW 5 - 10 | NNW 10 - 15 | NNW 15 - 20 | --- - | NNW 15 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 15 - 20 |
| Sunday Night | NNW 20 - 25 |
| Monday Morning | NW 20 - 25 |
| Monday Afternoon | NNW 15 - 20 |
| Monday Night | NNW 5 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 20 - 25 |
| Sunday Night | NNW 20 - 25 |
| Monday Morning | NW 10 - 15 |
| Monday Afternoon | NW 10 - 15 |
| Monday Night | NNW 10 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 25 - 30 |
| Sunday Night | NNW 25 - 35 |
| Monday Morning | NW 25 - 30 |
| Monday Afternoon | NW 30 - 40 |
| Monday Night | NNW 15 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 30 - 40 |
| Sunday Night | NNW 25 - 35 |
| Monday Morning | NNW 20 - 25 |
| Monday Afternoon | NW 15 - 20 |
| Monday Night | NNW 15 - 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: 10:53 AM PST Sunday, December 3, 2017
Extended Weather Synopsis for Saturday night through Saturday
The major ridge and dry, warm airmass will continue to amplify over the western US west coast from Tuesday through Thursday. A surface high pressure becomes established east of the Cascade crest, starting Tuesday, which will cause east winds in the Cascade passes.
Extended Weather
All Zones
Sunny and clear. Mild temperatures at higher elevations. East winds at the passes. Local low clouds and fog with cooler temperatures at lower elevations.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday | Snow Level | 7500' - 9500' | 7500' - 9500' | 9500' - 11500' | |
| Wednesday | Snow Level | 10000' - 12000' | 10500' - 12500' | 10500' - 12500' | |
| Thursday | Snow Level | 11000' - 13000' | 11000' - 13000' | 11000' - 13000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday |
Snow Level 7500' - 9500' |
| Wednesday |
Snow Level 10000' - 12000' |
| Thursday |
Snow Level 11000' - 13000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday |
Snow Level 7500' - 9500' |
| Wednesday |
Snow Level 10500' - 12500' |
| Thursday |
Snow Level 11000' - 13000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday |
Snow Level 9500' - 11500' |
| Wednesday |
Snow Level 10500' - 12500' |
| Thursday |
Snow Level 11000' - 13000' |
* 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 Dec 3, 2017
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.