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
Benign weather under a cool upper trough persists through Monday night before more active weather arrives Tuesday through the end of the week.
On Sunday afternoon, a relatively narrow band of weakly convective clouds associated with an upper shortwave trough are spreading onshore over the Olympic Peninsula. These clouds spread inland with chances of snow showers into the west slopes of the Olympic Mountains during the evening hours. Chances for light snow or snow showers move eastward into the Cascades from the late evening hours through Sunday morning with a dusting of snow expected in most locations. Weak convergence may bring several inches of snow to areas of the central Washington Cascades, but the locations are difficult to predict. NNW flow aloft behind the feature should mean the light to very light snow shower activity generally ends by afternoon as ridging works it's way into the region, giving us a cold and clear Monday night. Snow levels vary with diurnal warming from 0 up to around 1000 ft on both Sunday and Monday, with freezing levels hovering near or just above sea level on Monday night. On Tuesday, the first stages of an increasingly warm and wet train of moisture (another atmospheric river) begin to impact the region. Snow levels stay low for this initial moisture.
Weather Forecast
Hurricane Ridge
| Sunday Night | Cloudy in the evening with light snow showers. Decreasing clouds with a slight chance of snow flurries after midnight. |
| Monday | A few clouds early, then mostly sunny. |
Mt. Baker
| Sunday Night | Clear early with clouds increasing in the evening and then a chance of light snow showers. |
| Monday | Mostly cloudy with a chance of light snow showers early, then mostly clearing skies. |
Washington Pass and Leavenworth
| Sunday Night | Mostly clear with partly cloudy skies and a chance of snow flurries near the Cascade Crest. |
| Monday | Mostly sunny with a few clouds and a chance of snow flurries near the Cascade Crest. |
Stevens and Snoqualmie Pass
| Sunday Night | Clear in the early evening then increasing clouds with periods of light snowfall and a chance of weak convergence snowfall after 10 PM. W winds 0-10 mph through the Passes. |
| Monday | Periods of very light snowfall and weak convergence tapering off. W winds 0-10 mph through the Passes. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Clear in the evening with a chance of light snow showers after midnight. |
| Monday | Mostly cloudy with a chance of light snow showers early, then partial clearing. |
Mt. Hood
| Sunday Night | Mostly cloudy with chances of periods of light snow or snow showers increasing. |
| Monday | Periods of light snow or snow showers decreasing, giving way to partial clearing. |
Issued: 2:24 PM PST Sunday, February 2, 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 | 1000' | 500' | 500' | 1000' | 500' | 500' | 1000' | 1000' |
| Sunday Night | Snow Level | 500' | 0' | 0' | 0' | 0' | 0' | 0' | 500' |
| Monday Morning | Snow Level | 1000' | 0' | 0' | 500' | 500' | 500' | 500' | 1000' |
| Monday Afternoon | Snow Level | 1000' | 500' | 500' | 1000' | 500' | 1000' | 1000' | 1500' |
| Monday Evening | Freezing Level | 1000' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Monday Night | Freezing Level | 1000' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Tuesday Morning | Snow Level | 1000' | 0' | 0' | 0' | 0' | 500' | 500' | 500' |
| Tuesday Afternoon | Snow Level | 2500' | 500' | 1000' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 500' |
| Monday Morning |
Snow Level 1000' |
| Monday Afternoon |
Snow Level 1000' |
| Monday Evening |
Freezing Level 1000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Snow Level 1000' |
| Tuesday Afternoon |
Snow Level 2500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Snow Level 500' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 0' |
| Monday Afternoon |
Snow Level 500' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 500' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 0' |
| Monday Afternoon |
Snow Level 500' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1000' |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 500' |
| Monday Afternoon |
Snow Level 1000' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1000' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 500' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 500' |
| Monday Afternoon |
Snow Level 500' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 500' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 500' |
| Monday Afternoon |
Snow Level 1000' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 1000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 500' |
| Monday Afternoon |
Snow Level 1000' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 1000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 500' |
| Monday Morning |
Snow Level 1000' |
| Monday Afternoon |
Snow Level 1500' |
| Monday Evening |
Freezing Level 500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 1500' |
* 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 0.10 | 0 | 0 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0 | 0.25 |
| Washington Pass | 0 | 0 | 0 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | LT 0.10 | LT 0.10 | 0 | LT 0.25 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 | 0 | LT 0.25 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | LT 0.10 | 0 | LT 0.10 |
| Paradise | 0 | LT 0.10 | 0 | 0.25 |
| White Pass | 0 | 0 | 0 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Timberline | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| 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: 2:24 PM PST Sunday, February 2, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | W 0 - 10 | SSW 0 - 10 | WNW 0 - 10 | W 0 - 10 | W 5 - 15 |
| Sunday Night | WNW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 | W 5 - 15 |
| Monday Morning | VAR 0 - 10 | VAR 0 - 10 | W 0 - 10 | W 0 - 10 | W 10 - 20 |
| Monday Afternoon | WNW 0 - 10 | W 0 - 10 | W 5 - 15 | W 0 - 10 | W 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | WNW 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | WNW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | WNW 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | W 5 - 15 |
| Sunday Night | W 5 - 15 |
| Monday Morning | W 10 - 20 |
| Monday Afternoon | W 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | WNW 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | WNW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | WNW 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | W 5 - 15 |
| Sunday Night | W 5 - 15 |
| Monday Morning | W 10 - 20 |
| Monday Afternoon | W 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 | W 15 - 25 | W 15 - 25 | NW 10 - 20 | NW 10 - 20 | NNW 15 - 25 |
| Sunday Night | W 15 - 25 | W 15 - 25 | W 15 - 25 | W 15 - 25 | NW 10 - 20 |
| Monday Morning | WNW 5 - 15 | WNW 5 - 15 | NW 10 - 20 | NW 10 - 20 | NW 15 - 25 |
| Monday Afternoon | WNW 5 - 15 | WNW 5 - 15 | NW 10 - 20 | NW 10 - 20 | NNW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Monday Morning | WNW 5 - 15 |
| Monday Afternoon | WNW 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Monday Morning | WNW 5 - 15 |
| Monday Afternoon | WNW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | NW 10 - 20 |
| Sunday Night | W 15 - 25 |
| Monday Morning | NW 10 - 20 |
| Monday Afternoon | NW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | NW 10 - 20 |
| Sunday Night | W 15 - 25 |
| Monday Morning | NW 10 - 20 |
| Monday Afternoon | NW 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | NNW 15 - 25 |
| Sunday Night | NW 10 - 20 |
| Monday Morning | NW 15 - 25 |
| Monday Afternoon | NNW 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.
Issued: 2:24 PM PST Sunday, February 2, 2020
Extended Weather Synopsis for Tuesday night through Tuesday
The extended outlook looks very wet with another significant atmospheric river event impacting Washington State with moisture of subtropical origin moving over the top of an offshore ridge of high pressure.
Tuesday night, as waves of moisture intensify and moderate precipitation takes aim on Washington state, snow levels rise to near Snoqualmie Pass level with the most significant warming over the Olympic Mountains. On Wednesday, rain and high elevation snow continue to focus on Washington State with snow levels rising toward Cascade Crest level by the end of the day in the central Washington Cascades. The heavy rain continues Wednesday night with little change in snow level. On Thursday, perhaps the most intense wave of moisture moves over Washington State.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 1500' - 3500' | 2000' - 4000' | 2000' - 4000' | |
| Wednesday | Snow Level | 3500' - 4500' | 4000' - 6000' | 5000' - 7000' | |
| Wednesday Night | Snow Level | 3500' - 4500' | 5000' - 6000' | 5500' - 6500' | |
| Thursday | Snow Level | 4000' - 5000' | 4500' - 5500' | 5000' - 6000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 1500' - 3500' |
| Wednesday |
Snow Level 3500' - 4500' |
| Wednesday Night |
Snow Level 3500' - 4500' |
| Thursday |
Snow Level 4000' - 5000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2000' - 4000' |
| Wednesday |
Snow Level 4000' - 6000' |
| Wednesday Night |
Snow Level 5000' - 6000' |
| Thursday |
Snow Level 4500' - 5500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 2000' - 4000' |
| Wednesday |
Snow Level 5000' - 7000' |
| Wednesday Night |
Snow Level 5500' - 6500' |
| Thursday |
Snow Level 5000' - 6000' |
* 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 Feb 2, 2020
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