Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Thursday
A strong front passed through last evening from north to south across the region, with some very heavy rainfall rates recorded before cooler air moved in behind the front. Snow showers behind the front are beginning to stack up in the Cascade Passes and south to Mt Hood along the west slopes of the Cascades. Disorganized areas of convergence downwind of Vancouver Island and the Olympics in NW flow will keep accumulating snow showers going through about mid-day, with showers becoming lighter and more scattered in the afternoon. The Olympics, Mt. Baker area and the east slopes of the Cascades will all see a quicker clearing trend (if not already clear). Gusty west winds (locally strong at Mt. Hood) will decrease during the day as high pressure offshore begins to extend it's influence over the Pacific Northwest.
Conditions generally dry out tonight with clear skies expected in most locations. Some low clouds may get pulled into the Cascade Passes as light east flow develops. Other than the aforementioned low clouds in the Passes and some high clouds coming over the Olymipcs/north Cascades in the afternoon, generally sunny skies and cool temperatures are forecast on Monday.
Weather Forecast
Hurricane Ridge
| Sunday | Mostly cloudy with scattered light snow showers this morning, becoming mostly sunny in the afternoon. |
Mt. Baker
| Sunday | Mostly cloudy with scattered light snow showers this morning, becoming partly to mostly sunny in the afternoon. |
Washington Pass and Leavenworth
| Sunday | Mostly cloudy with scattered light snow showers near the Cascade crest this morning, becoming mostly sunny in the afternoon. Moderate west winds in the alpine decreasing in the afternoon. |
Stevens and Snoqualmie Pass
| Sunday | Light to occasionally moderate snow showers in the morning, becoming mostly cloudy with scattered light snow showers in the afternoon. Gusty west winds in the morning decreasing by mid-day. |
Mt. Rainier, Crystal and White Pass
| Sunday | Light to occasionally moderate snow showers in the morning, becoming mostly cloudy with scattered light snow showers in the afternoon. Gusty west winds in the morning decreasing by mid-day. |
Mt. Hood
| Sunday | Light to occasionally moderate snow showers in the morning, becoming mostly cloudy with scattered light snow showers in the afternoon. Moderate to strong west winds slowly decreasing mid-day. |
Issued: 6:55 AM PST Sunday, December 30, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Snow Level | 2000' | 2000' | 2000' | 2000' | 2000' | 2500' | 2500' | 3000' |
| Sunday Afternoon | Snow Level | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' | 2500' |
| Sunday Evening | Snow Level | 1500' | 1000' | 1000' | 1000' | 1500' | 1500' | 1500' | 2500' |
| Sunday Night | Freezing Level | 1500' | 500' | 0' | 500' | 500' | 1000' | 1000' | 2000' |
| Monday Morning | Freezing Level | 1500' | 500' | 0' | 500' | 500' | 1000' | 1000' | 2000' |
| Monday Afternoon | Freezing Level | 3000' | 1500' | 1500' | 1500' | 1500' | 1500' | 2000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1500' |
| Sunday Night |
Freezing Level 1500' |
| Monday Morning |
Freezing Level 1500' |
| Monday Afternoon |
Freezing Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 1500' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Freezing Level 500' |
| Monday Morning |
Freezing Level 500' |
| Monday Afternoon |
Freezing Level 1500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 1500' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Freezing Level 0' |
| Monday Morning |
Freezing Level 0' |
| Monday Afternoon |
Freezing Level 1500' |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Freezing Level 500' |
| Monday Morning |
Freezing Level 500' |
| Monday Afternoon |
Freezing Level 1500' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1500' |
| Sunday Night |
Freezing Level 500' |
| Monday Morning |
Freezing Level 500' |
| Monday Afternoon |
Freezing Level 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1500' |
| Sunday Night |
Freezing Level 1000' |
| Monday Morning |
Freezing Level 1000' |
| Monday Afternoon |
Freezing Level 1500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1500' |
| Sunday Night |
Freezing Level 1000' |
| Monday Morning |
Freezing Level 1000' |
| Monday Afternoon |
Freezing Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3000' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Evening |
Snow Level 2500' |
| Sunday Night |
Freezing Level 2000' |
| Monday Morning |
Freezing Level 2000' |
| Monday Afternoon |
Freezing Level 2000' |
* 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 Night | Thursday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | 0 | 0 |
| Washington Pass | LT 0.10 | 0 | 0 |
| Leavenworth | LT 0.10 | 0 | 0 |
| Stevens Pass | 0.25 - 0.50 | LT 0.10 | 0 |
| Snoqualmie Pass | 0.50 | LT 0.10 | 0 |
| Mission Ridge | LT 0.10 | 0 | 0 |
| Crystal Mt | 0.25 - 0.50 | LT 0.10 | 0 |
| Paradise | 0.25 - 0.50 | LT 0.10 | 0 |
| White Pass | LT 0.25 | 0 | 0 |
| Mt Hood Meadows | 0.25 - 0.50 | LT 0.10 | 0 |
| Timberline | 0.50 | LT 0.10 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Thursday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Thursday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Thursday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Thursday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Thursday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday | LT 0.25 |
| Sunday Night | 0 |
| Thursday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday | 0.50 |
| Sunday Night | LT 0.10 |
| Thursday | 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: 6:55 AM PST Sunday, December 30, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | WNW 10 - 20 | W 5 - 15 | W 20 - 30 | W 15 - 25 | WNW 30 - 40 |
| Sunday Afternoon | NW 5 - 15 | NW 0 - 10 | W 10 - 20 | W 5 - 15 | WNW 25 - 35 |
| Sunday Evening | N 10 - 20 | NE 10 - 20 | NW 5 - 15 | N 10 - 20 | NW 15 - 25 |
| Sunday Night | NE 5 - 15 | NE 5 - 15 | NE 0 - 10 | NE 0 - 10 | NE 5 - 15 |
| Monday Morning | NE 0 - 10 | NE 0 - 10 | E 0 - 10 | VAR 0 - 10 | ENE 5 - 15 |
| Monday Afternoon | NW 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | E 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | WNW 10 - 20 |
| Sunday Afternoon | NW 5 - 15 |
| Sunday Evening | N 10 - 20 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | NW 0 - 10 |
| Sunday Evening | NE 10 - 20 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | NE 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | W 20 - 30 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Evening | NW 5 - 15 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | W 15 - 25 |
| Sunday Afternoon | W 5 - 15 |
| Sunday Evening | N 10 - 20 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | WNW 30 - 40 |
| Sunday Afternoon | WNW 25 - 35 |
| Sunday Evening | NW 15 - 25 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | ENE 5 - 15 |
| Monday Afternoon | E 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | WNW 10 - 20 |
| Sunday Afternoon | NW 5 - 15 |
| Sunday Evening | N 10 - 20 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | NW 0 - 10 |
| Sunday Evening | NE 10 - 20 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | NE 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | W 20 - 30 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Evening | NW 5 - 15 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | W 15 - 25 |
| Sunday Afternoon | W 5 - 15 |
| Sunday Evening | N 10 - 20 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | VAR 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | WNW 30 - 40 |
| Sunday Afternoon | WNW 25 - 35 |
| Sunday Evening | NW 15 - 25 |
| Sunday Night | NE 5 - 15 |
| Monday Morning | ENE 5 - 15 |
| Monday Afternoon | 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 Morning | NW 15 - 25 | NW 25 - 35 | NW 30 - 40 | WNW 30 - 40 | WNW 40 - 55 |
| Sunday Afternoon | NW 15 - 25 | NW 25 - 35 | NW 20 - 35 | NW 20 - 35 | NW 30 - 40 |
| Sunday Evening | NNE 20 - 30 | N 25 - 35 | N 15 - 25 | N 20 - 30 | N 20 - 30 |
| Sunday Night | N 15 - 25 | N 10 - 20 | N 15 - 25 | N 15 - 25 | N 20 - 30 |
| Monday Morning | NNW 15 - 25 | NNW 15 - 25 | N 15 - 25 | N 15 - 25 | NNE 20 - 30 |
| Monday Afternoon | NNW 15 - 25 | NNW 20 - 30 | NNW 20 - 30 | N 20 - 30 | NNE 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | NW 15 - 25 |
| Sunday Afternoon | NW 15 - 25 |
| Sunday Evening | NNE 20 - 30 |
| Sunday Night | N 15 - 25 |
| Monday Morning | NNW 15 - 25 |
| Monday Afternoon | NNW 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | NW 25 - 35 |
| Sunday Afternoon | NW 25 - 35 |
| Sunday Evening | N 25 - 35 |
| Sunday Night | N 10 - 20 |
| Monday Morning | NNW 15 - 25 |
| Monday Afternoon | NNW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | NW 30 - 40 |
| Sunday Afternoon | NW 20 - 35 |
| Sunday Evening | N 15 - 25 |
| Sunday Night | N 15 - 25 |
| Monday Morning | N 15 - 25 |
| Monday Afternoon | NNW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | WNW 30 - 40 |
| Sunday Afternoon | NW 20 - 35 |
| Sunday Evening | N 20 - 30 |
| Sunday Night | N 15 - 25 |
| Monday Morning | N 15 - 25 |
| Monday Afternoon | N 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | WNW 40 - 55 |
| Sunday Afternoon | NW 30 - 40 |
| Sunday Evening | N 20 - 30 |
| Sunday Night | N 20 - 30 |
| Monday Morning | NNE 20 - 30 |
| Monday Afternoon | NNE 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Dec 30, 2018
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.