Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Saturday
A deep trough in the NE Pacific and a strong westerly are pushing a significant storm through our region. Stormy conditions will develop for all areas today as warm frontal moisture streams into the area. Snow levels will rise and even the Cascade Passes should see some rain mix in during the afternoon hours.
The associated cold front will sweep through the Cascades in the early evening and snow levels will plummet overnight. Post-frontal showers will pile up the snow along the west slopes of the Cascades and Mt. Hood Tuesday night and moderate westerly winds will create blustery conditions.
Showers will diminish Wednesday morning but don't expect much of a respite. Light warm frontal moisture from the next frontal system will begin to impact the Olympics and north Cascades by Wednesday afternoon.
Weather Forecast
Hurricane Ridge
| Tuesday | Stormy with light to moderate rain and snow. Warming trend. |
Mt. Baker
| Tuesday | Stormy with moderate to heavy rain and snow. Slight warming trend. |
Washington Pass and Leavenworth
| Tuesday | Light to moderate snow. Windy in the alpine. Mixed precipitation or rain possible in the afternoon at lower elevations. Warming trend. |
Stevens and Snoqualmie Pass
| Tuesday | Stormy with moderate to occasionally heavy snow. Mixed precipitation possible mid-day, then rain likely at Pass level in the afternoon. Light east winds at Pass level becoming west in the afternoon. Warming trend. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Stormy with moderate to occasionally heavy rain and snow. Heaviest precipitation Paradise area. Warming trend. |
Mt. Hood
| Tuesday | Moderate rain and snow developing. Warming trend. Becoming windy. |
Issued: 6:59 AM PST Tuesday, December 11, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level * | 5500' | 3000' | 2000' | 1500' | 2500' | 2500' | 3500' | 3500' |
| Tuesday Afternoon | Snow Level | 6500' | 4000' | 3500' | 4000' | 5000' | 5500' | 6000' | 7000' |
| Tuesday Evening | Snow Level | 3500' | 3500' | 4000' | 4500' | 4500' | 4500' | 4500' | 5500' |
| Tuesday Night | Snow Level | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2500' | 2500' |
| Wednesday Morning | Snow Level | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' |
| Wednesday Afternoon | Snow Level | 3000' | 2500' | 2500' | 2000' | 2500' | 2500' | 3000' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 5500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 6500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4000' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 2500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 2500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4000' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 2000' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5000' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 2500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 2500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 6000' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 7000' |
| Tuesday Evening |
Snow Level 5500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3000' |
* 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
| Tuesday | Tuesday Night | Saturday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.75 | 0.25 - 0.50 | LT 0.25 |
| Mt Baker Ski Area | 2.00 | 0.50 - 0.75 | LT 0.25 |
| Washington Pass | 1.00 | 0.50 - 0.75 | LT 0.10 |
| Leavenworth | 0.50 | 0.50 | LT 0.10 |
| Stevens Pass | 1.50 | 1.00 - 1.50 | 0.25 - 0.50 |
| Snoqualmie Pass | 1.50 - 2.00 | 1.00 - 1.50 | 0.25 - 0.50 |
| Mission Ridge | 0.50 - 0.75 | 0.50 - 0.75 | LT 0.10 |
| Crystal Mt | 0.75 -1.00 | 1.00 | 0.25 |
| Paradise | 1.50 - 2.00 | 1.00 - 1.50 | 0.50 |
| White Pass | 0.75 -1.00 | 1.00 | 0.25 |
| Mt Hood Meadows | 1.00 | 1.00 - 1.50 | 0.25 |
| Timberline | 1.50 | 1.50 | 0.25 - 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 |
| Tuesday Night | 0.25 - 0.50 |
| Saturday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 2.00 |
| Tuesday Night | 0.50 - 0.75 |
| Saturday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 0.50 - 0.75 |
| Saturday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 |
| Tuesday Night | 0.50 |
| Saturday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | 1.50 |
| Tuesday Night | 1.00 - 1.50 |
| Saturday | 0.25 - 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | 1.50 - 2.00 |
| Tuesday Night | 1.00 - 1.50 |
| Saturday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 0.50 - 0.75 |
| Saturday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 -1.00 |
| Tuesday Night | 1.00 |
| Saturday | 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 1.50 - 2.00 |
| Tuesday Night | 1.00 - 1.50 |
| Saturday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 -1.00 |
| Tuesday Night | 1.00 |
| Saturday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 1.00 - 1.50 |
| Saturday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 1.50 |
| Tuesday Night | 1.50 |
| Saturday | 0.25 - 0.50 |
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: 6:59 AM PST Tuesday, December 11, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SE 25 - 40 | SW 30 - 40 | SE 10 - 20 | S 20 - 30 | SW 20 - 30 |
| Tuesday Afternoon | SW 20 - 30 | SW 20 - 30 | S 15 - 30 | SW 20 - 35 | SW 25 - 35 |
| Tuesday Evening | W 25 - 35 | WSW 20 - 30 | SW 20 - 35 | WSW 25 - 35 | SW 35 - 45 |
| Tuesday Night | WNW 25 - 35 | WSW 20 - 30 | W 15 - 30 | W 30 - 40 | W 35 - 45 |
| Wednesday Morning | WSW 15 - 30 | SW 15 - 25 | W 15 - 25 | W 25 - 35 | W 35 - 45 |
| Wednesday Afternoon | SW 15 - 25 | SW 10 - 20 | SW 15 - 30 | SW 15 - 30 | SW 15 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | SE 25 - 40 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Evening | W 25 - 35 |
| Tuesday Night | WNW 25 - 35 |
| Wednesday Morning | WSW 15 - 30 |
| Wednesday Afternoon | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SW 30 - 40 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | S 15 - 30 |
| Tuesday Evening | SW 20 - 35 |
| Tuesday Night | W 15 - 30 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | SW 15 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SW 20 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | W 30 - 40 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | SW 15 - 30 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | SW 35 - 45 |
| Tuesday Night | W 35 - 45 |
| Wednesday Morning | W 35 - 45 |
| Wednesday Afternoon | SW 15 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | SE 25 - 40 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Evening | W 25 - 35 |
| Tuesday Night | WNW 25 - 35 |
| Wednesday Morning | WSW 15 - 30 |
| Wednesday Afternoon | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SW 30 - 40 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | S 15 - 30 |
| Tuesday Evening | SW 20 - 35 |
| Tuesday Night | W 15 - 30 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | SW 15 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SW 20 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | W 30 - 40 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | SW 15 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | SW 35 - 45 |
| Tuesday Night | W 35 - 45 |
| Wednesday Morning | W 35 - 45 |
| Wednesday Afternoon | SW 15 - 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SW 35 - 45 | SW 40 - 50 | SW 50 - 60 | SW 50 - 60 | SW 45 - 55 |
| Tuesday Afternoon | SW 40 - 50 | SW 40 - 50 | SW 55 - 65 | SW 60 - 70 | SW 55 - 65 |
| Tuesday Evening | W 30 - 40 | W 30 - 40 | W 40 - 50 | W 45 - 55 | W 50 - 60 |
| Tuesday Night | W 35 - 45 | W 50 - 60 | WNW 45 - 55 | WNW 50 - 60 | WNW 50 - 60 |
| Wednesday Morning | W 35 - 45 | W 45 - 55 | WNW 40 - 50 | WNW 40 - 50 | NW 40 - 50 |
| Wednesday Afternoon | SW 30 - 40 | SW 45 - 55 | WSW 40 - 50 | W 30 - 40 | W 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SW 35 - 45 |
| Tuesday Afternoon | SW 40 - 50 |
| Tuesday Evening | W 30 - 40 |
| Tuesday Night | W 35 - 45 |
| Wednesday Morning | W 35 - 45 |
| Wednesday Afternoon | SW 30 - 40 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 40 - 50 |
| Tuesday Afternoon | SW 40 - 50 |
| Tuesday Evening | W 30 - 40 |
| Tuesday Night | W 50 - 60 |
| Wednesday Morning | W 45 - 55 |
| Wednesday Afternoon | SW 45 - 55 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 50 - 60 |
| Tuesday Afternoon | SW 55 - 65 |
| Tuesday Evening | W 40 - 50 |
| Tuesday Night | WNW 45 - 55 |
| Wednesday Morning | WNW 40 - 50 |
| Wednesday Afternoon | WSW 40 - 50 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | SW 50 - 60 |
| Tuesday Afternoon | SW 60 - 70 |
| Tuesday Evening | W 45 - 55 |
| Tuesday Night | WNW 50 - 60 |
| Wednesday Morning | WNW 40 - 50 |
| Wednesday Afternoon | W 30 - 40 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 45 - 55 |
| Tuesday Afternoon | SW 55 - 65 |
| Tuesday Evening | W 50 - 60 |
| Tuesday Night | WNW 50 - 60 |
| Wednesday Morning | NW 40 - 50 |
| Wednesday Afternoon | W 35 - 45 |
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 10, 2018
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