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 Thursday
The Pacific Northwest sits in the warm sector of a string of frontal systems taking aim at British Columbia. The Pacific Northwest sits in the warm sector with a warm front to our north. A ridge of high pressure over the western US has only allowed a small amount of this moist system's precipitation to invade western Washington and Oregon. The region should dry out further Sunday night as the trailing frontal boundary re-orients N-S offshore. The Olympics and Mt. Baker areas could continue to see some very light rain or snow, but hardly anything measurable. Expect unseasonably mild temperatures west of the Cascade Crest (temperatures in the 30's and even possibly low 40's in some locations) with a weakened cold pool keeping temperatures in the 20's and low thirties east of the Cascade Crest. A weakening frontal system moves into the near-shore waters by the early morning hours with rain and snow reaching the west slopes of the Olympics. As it approaches, easterly gradients and winds through the Cascade Passes should peak during the evening hours.
On Monday, the weakening front moves onshore spreading some increasing light rain and snow to the Olympics and Mt. Baker areas, but the front stalls through Monday evening. Monday night a stronger system offshore joins forces with the original front and pushes light rain and snow into the Mt. Hood, Mt. Rainier area, and Olympics by Tuesday morning.
On Tuesday, the frontal system moves through the Cascades, bringing cooling temperatures and moderate precipitation to the region as it passes. With a cool E flow continuing and lowering snow levels, expect some snowfall accumulations with Mt. Baker likely to pick up the most (perhaps 6-12").
Weather Forecast
Hurricane Ridge
| Sunday Night | Mostly cloudy with a slight chance of a rain/snow shower early. Mild. |
| Monday | Periods of light rain and high elevation snow. Moderate ridgetop winds gusting strong. |
Mt. Baker
| Sunday Night | Mostly cloudy with a slight chance of light rain or snow in the early evening. Mild. |
| Monday | Rain and snow developing by mid-morning. Mild with lowering snow levels. |
Washington Pass and Leavenworth
| Sunday Night | Mostly cloudy aloft with low clouds and inversion conditions in the valleys. |
| Monday | Mostly cloudy aloft with low clouds and inversion conditions in the valleys. |
Stevens and Snoqualmie Pass
| Sunday Night | Mostly cloudy. Low clouds possible through the mountain gaps. Decreasing light to moderate winds at 5000 ft with E winds 15-25 mph gusting strong. Stronger winds in the Cascade foothills west of the Passes. |
| Monday | Mostly cloudy. Low cloud possible through the Passes. Decreasing light E flow through the Passes with light to moderate winds at 5000 ft. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Mostly cloudy. Mild. |
| Monday | Mostly cloudy and mild with a slight chance of very light rain or snow at Paradise. |
Mt. Hood
| Sunday Night | Mostly cloudy and mild with multiple freezing levels. |
| Monday | Mostly cloudy and mild with multiple freezing levels. |
Issued: 2:42 PM PST Sunday, January 19, 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 | Freezing Level * | 8000' | 7000' | 4500' | 5500' | 6500' | 7500' | 7500' | 8000' |
| Sunday Night | Freezing Level * | 8000' | 7000' | 4000' | 5500' | 6000' | 7000' | 7000' | 7000' |
| Monday Morning | Snow Level * | 5500' | 5500' | 4500' | 4500' | 4500' | 4500' | 5500' | 5000' |
| Monday Afternoon | Snow Level * | 5000' | 4000' | 4000' | 4500' | 4500' | 5000' | 5500' | 5500' |
| Monday Evening | Snow Level * | 4500' | 4500' | 4000' | 4000' | 4000' | 4500' | 5000' | 5000' |
| Monday Night | Snow Level * | 5000' | 4000' | 3500' | 3500' | 3500' | 3500' | 4500' | 4500' |
| Tuesday Morning | Snow Level * | 3500' | 3500' | 2500' | 2500' | 3000' | 3500' | 3500' | 3500' |
| Tuesday Afternoon | Snow Level * | 3000' | 2500' | 2500' | 2500' | 2500' | 2500' | 3000' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 8000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Monday Evening |
Snow Level 4500' (Easterly Flow *) |
| Monday Night |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Monday Evening |
Snow Level 4500' (Easterly Flow *) |
| Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 4000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Monday Evening |
Snow Level 4000' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Monday Evening |
Snow Level 4000' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 6500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 6000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Monday Evening |
Snow Level 4000' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Monday Evening |
Snow Level 4500' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Monday Evening |
Snow Level 5000' (Easterly Flow *) |
| Monday Night |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Monday Evening |
Snow Level 5000' (Easterly Flow *) |
| Monday Night |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' (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 | Thursday | Thursday Night | Thursday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.25 | 0.25 - 0.50 | 0.50 |
| Mt Baker Ski Area | 0 | 0.25 | 0.25 | 0.75 |
| Washington Pass | 0 | 0 | 0 | 0.25 |
| Leavenworth | 0 | 0 | 0 | LT 0.25 |
| Stevens Pass | 0 | LT 0.10 | LT 0.10 | 0.25 |
| Snoqualmie Pass | 0 | 0 | 0 | 0.25 |
| Mission Ridge | 0 | 0 | 0 | LT 0.25 |
| Crystal Mt | 0 | 0 | LT 0.10 | 0.25 - 0.50 |
| Paradise | 0 | LT 0.10 | LT 0.25 | 0.50 - 0.75 |
| White Pass | 0 | 0 | LT 0.10 | 0.25 |
| Mt Hood Meadows | 0 | 0 | LT 0.25 | 0.50 |
| Timberline | 0 | 0 | LT 0.25 | 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | LT 0.25 |
| Thursday Night | 0.25 - 0.50 |
| Thursday | 0.50 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0.25 |
| Thursday Night | 0.25 |
| Thursday | 0.75 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | LT 0.25 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | LT 0.25 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | LT 0.10 |
| Thursday | 0.25 - 0.50 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.25 |
| Thursday | 0.50 - 0.75 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | LT 0.10 |
| Thursday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | LT 0.25 |
| Thursday | 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Thursday | 0 |
| Thursday Night | LT 0.25 |
| Thursday | 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: 2:42 PM PST Sunday, January 19, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SSE 10 - 20 | ESE 10 - 20 | E 10 - 20 | E 5 - 15 | SE 10 - 20 |
| Sunday Night | SSE 15 - 25 | SE 15 - 25 | E 5 - 15 | E 5 - 15 | S 5 - 15 |
| Monday Morning | SSW 10 - 20 | S 15 - 25 | S 15 - 25 | SSE 10 - 20 | S 5 - 15 |
| Monday Afternoon | SSE 10 - 20 | SSE 10 - 20 | E 5 - 15 | S 5 - 15 | S 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SSE 10 - 20 |
| Sunday Night | SSE 15 - 25 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSE 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | SE 15 - 25 |
| Monday Morning | S 15 - 25 |
| Monday Afternoon | SSE 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 5 - 15 |
| Monday Morning | S 15 - 25 |
| Monday Afternoon | E 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | E 5 - 15 |
| Sunday Night | E 5 - 15 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | S 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | SE 10 - 20 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | S 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SSE 10 - 20 |
| Sunday Night | SSE 15 - 25 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSE 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | SE 15 - 25 |
| Monday Morning | S 15 - 25 |
| Monday Afternoon | SSE 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 5 - 15 |
| Monday Morning | S 15 - 25 |
| Monday Afternoon | E 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | E 5 - 15 |
| Sunday Night | E 5 - 15 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | S 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | SE 10 - 20 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | S 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SSW 25 - 35 | SSW 20 - 30 | SSW 20 - 30 | SSW 20 - 30 | SSW 20 - 30 |
| Sunday Night | S 30 - 40 | SSW 25 - 35 | SSW 20 - 30 | SW 20 - 30 | SSW 20 - 30 |
| Monday Morning | SSW 30 - 40 | SSW 25 - 35 | SSW 20 - 30 | SSW 25 - 35 | SSW 20 - 30 |
| Monday Afternoon | SSW 25 - 35 | SW 25 - 35 | SSW 20 - 30 | SW 20 - 30 | SSW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SSW 25 - 35 |
| Sunday Night | S 30 - 40 |
| Monday Morning | SSW 30 - 40 |
| Monday Afternoon | SSW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SSW 25 - 35 |
| Monday Morning | SSW 25 - 35 |
| Monday Afternoon | SW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SSW 20 - 30 |
| Monday Morning | SSW 20 - 30 |
| Monday Afternoon | SSW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SW 20 - 30 |
| Monday Morning | SSW 25 - 35 |
| Monday Afternoon | SW 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SSW 20 - 30 |
| Monday Morning | SSW 20 - 30 |
| Monday Afternoon | SSW 25 - 35 |
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: 2:42 PM PST Sunday, January 19, 2020
Extended Weather Synopsis for Thursday night through Thursday
Tuesday night, a weakening shortwave trough moves over the region with some light to moderate rain and snow at lower snow levels. Wednesday, a moderately strong warm front approaches the region in the morning and spreads increasing moderate to occasionally heavy rain and snow during the afternoon with snow levels beginning to rise by late in the day. Thursday night, the warm front continues to lift northward with rain and snow along with rising snow levels as the cold front approaches the coastline by morning. On Thuraday, the whole package lifts NE, with rain and high elevation snow continuing, with a trough starting to move into the region by the end of the day. Wednesday onwards should be milder than average. E flow is likely to continue through much of the period, maintaining a pattern of lower snow levels through the Passes and east of the Cascade Crest with periods of freezing rain at times.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 1500' - 2500' | 2000' - 3000' | 2000' - 3000' | |
| Wednesday | Snow Level | 1500' - 2500' | 2000' - 3000' | 2500' - 3500' | |
| Wednesday Night | Snow Level | 2000' - 3000' | 2500' - 3500' | 5000' - 6000' | * |
| Thursday | Snow Level | 4000' - 5000' | 4500' - 5500' | 6000' - 7000' | * |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 1500' - 2500' |
| Wednesday |
Snow Level 1500' - 2500' |
| Wednesday Night |
Snow Level 2000' - 3000' (Easterly Flow *) |
| Thursday |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2000' - 3000' |
| Wednesday |
Snow Level 2000' - 3000' |
| Wednesday Night |
Snow Level 2500' - 3500' (Easterly Flow *) |
| Thursday |
Snow Level 4500' - 5500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2000' - 3000' |
| Wednesday |
Snow Level 2500' - 3500' |
| Wednesday Night |
Snow Level 5000' - 6000' (Easterly Flow *) |
| Thursday |
Snow Level 6000' - 7000' (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 Jan 19, 2020
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