Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Friday night through Friday
A surface low off the central Washington Coast spread light snow over the region today.
Tonight, snowfall will increase for the south Washington Cascades and Mt. Hood area as the low drops south along the coast. On the west side of the Cascades, very cold and drier air drawn out of the British Columbia interior will flood through the Fraser River Valley later tonight with gusty NE winds. This should help light snowfall taper down from north to south along the west slopes of the Cascades on Saturday. The exception will be along the north slopes of the Olympics where NE outflow winds will help keep locally moderate snow in the forecast overnight through Saturday morning.
A serious upslope component to this storm will also enhance snowfall along the east slopes of the Cascades tonight through much of Saturday. Along the east slopes, the highest totals are likely for the Wentachee Mountains, whom could see 18-36 inches by Saturday night.
The other main focus during this storm will be the wind. Moderate easterly winds will develop at Pass level and at ridge-crest for most of the Washington Cascades Friday night through Saturday. Expect cold temperatures (with single digits expected for the Olympics and north Cascades) and lots of blowing snow to impact just about all areas whether or not new snow is falling.
The low complex will weaknen and drift futher south Saturday night. Light snow showers should continue for the Mt. Hood area and the southeast Cascades overnight. As the upper low drifts into Oregon on Sunday, we will see a short-lived break from the wind and snow showers with fair and cold weather expected.
Weather Forecast
Hurricane Ridge
| Friday Night | Light to moderate snow showers. Windy. Turning colder. |
| Saturday | Light to occasionally moderate snow showers becoming light and scattered late in the afternoon. Windy. Very cold. |
Mt. Baker
| Friday Night | Periods of light snow. Becoming windy. Very cold. |
| Saturday | Mostly cloudy with isolated light snow showers, mainly in the morning. Becoming partly cloudy in the afternoon. Windy. Very cold. |
Washington Pass and Leavenworth
| Friday Night | Light to moderate snow. Becoming windy. Very cold. |
| Saturday | Light to occasionally moderate snow in the morning, becoming lighter in the afternoon. Partial clearing near Washington Pass in the afternoon. Windy. Very cold. |
Stevens and Snoqualmie Pass
| Friday Night | Light to occasionally moderate snow. East winds becoming moderate both at Pass level and ridge-crest. Turning colder. |
| Saturday | Light snow in the morning becoming mostly cloudy with scattered snow showers in the afternoon. Moderate east wind at Pass level and ridge-crest. Cold. |
Mt. Rainier, Crystal and White Pass
| Friday Night | Light snow developing in the evening and becoming occasionally moderate overnight. Increasing winds after midnight. Cold. |
| Saturday | Light snow in the morning becoming partly to mostly cloudy with scattered snow showers in the afternoon. Moderate winds. Cold. |
Mt. Hood
| Friday Night | Light snow becoming moderate overnight. Turning colder. |
| Saturday | Light to moderate snow in the morning becoming cloudy with light snow showers by mid-day. Cold. |
Issued: 2:24 PM PST Friday, February 8, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Evening | Snow Level * | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 500' |
| Friday Night | Snow Level * | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Saturday Morning | Snow Level * | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Saturday Afternoon | Snow Level * | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Saturday Evening | Snow Level * | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Saturday Night | Snow Level | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Sunday Morning | Snow Level | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Sunday Afternoon | Snow Level | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Washington Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Leavenworth | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Evening |
Snow Level 0' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening |
Snow Level 500' (Easterly Flow *) |
| Friday Night |
Snow Level 0' (Easterly Flow *) |
| Saturday Morning |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 0' (Easterly Flow *) |
| Saturday Evening |
Snow Level 0' (Easterly Flow *) |
| Saturday Night |
Snow Level 0' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 0' |
* 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
| Friday Night | Friday | Friday Night | Friday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.50 | 0.25 - 0.50 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0 | 0 |
| Washington Pass | 0.25 | 0.25 | LT 0.10 | 0 |
| Leavenworth | 0.25 - 0.50 | 0.25 | LT 0.10 | 0 |
| Stevens Pass | 0.25 | LT 0.25 | LT 0.10 | 0 |
| Snoqualmie Pass | 0.25 - 0.50 | LT 0.25 | 0 | 0 |
| Mission Ridge | 0.25 - 0.50 | 0.50 - 0.75 | 0.25 - 0.50 | 0 |
| Crystal Mt | 0.50 | LT 0.25 | LT 0.10 | 0 |
| Paradise | 0.75 | LT 0.25 | LT 0.10 | 0 |
| White Pass | 0.50 | 0.25 | 0.25 | 0 |
| Mt Hood Meadows | 0.50 - 0.75 | 0.25 | LT 0.25 | LT 0.10 |
| Timberline | 0.75 | 0.25 | LT 0.25 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 |
| Friday | 0.25 - 0.50 |
| Friday Night | 0 |
| Friday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Friday | LT 0.10 |
| Friday Night | 0 |
| Friday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 |
| Friday | 0.25 |
| Friday Night | LT 0.10 |
| Friday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Friday | 0.25 |
| Friday Night | LT 0.10 |
| Friday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 |
| Friday | LT 0.25 |
| Friday Night | LT 0.10 |
| Friday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Friday | LT 0.25 |
| Friday Night | 0 |
| Friday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Friday | 0.50 - 0.75 |
| Friday Night | 0.25 - 0.50 |
| Friday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 |
| Friday | LT 0.25 |
| Friday Night | LT 0.10 |
| Friday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday Night | 0.75 |
| Friday | LT 0.25 |
| Friday Night | LT 0.10 |
| Friday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 |
| Friday | 0.25 |
| Friday Night | 0.25 |
| Friday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 - 0.75 |
| Friday | 0.25 |
| Friday Night | LT 0.25 |
| Friday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday Night | 0.75 |
| Friday | 0.25 |
| Friday Night | LT 0.25 |
| Friday | 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 Friday, February 8, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | NE 15 - 25 | NE 15 - 30 | E 10 - 20 | S 10 - 20 | S 5 - 15 |
| Friday Night | NE 15 - 25 | NE 15 - 30 | E 20 - 30 | SE 15 - 25 | SW 15 - 25 |
| Saturday Morning | NE 20 - 30 | NE 20 - 35 | E 25 - 35 | ESE 20 - 30 | S 10 - 20 |
| Saturday Afternoon | NE 20 - 30 | NE 20 - 30 | E 20 - 30 | E 15 - 25 | ENE 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening | NE 15 - 25 |
| Friday Night | NE 15 - 25 |
| Saturday Morning | NE 20 - 30 |
| Saturday Afternoon | NE 20 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening | NE 15 - 30 |
| Friday Night | NE 15 - 30 |
| Saturday Morning | NE 20 - 35 |
| Saturday Afternoon | NE 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening | E 10 - 20 |
| Friday Night | E 20 - 30 |
| Saturday Morning | E 25 - 35 |
| Saturday Afternoon | E 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Evening | S 10 - 20 |
| Friday Night | SE 15 - 25 |
| Saturday Morning | ESE 20 - 30 |
| Saturday Afternoon | E 15 - 25 |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening | S 5 - 15 |
| Friday Night | SW 15 - 25 |
| Saturday Morning | S 10 - 20 |
| Saturday Afternoon | ENE 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Evening | NE 15 - 25 |
| Friday Night | NE 15 - 25 |
| Saturday Morning | NE 20 - 30 |
| Saturday Afternoon | NE 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | NE 15 - 30 |
| Friday Night | NE 15 - 30 |
| Saturday Morning | NE 20 - 35 |
| Saturday Afternoon | NE 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | E 10 - 20 |
| Friday Night | E 20 - 30 |
| Saturday Morning | E 25 - 35 |
| Saturday Afternoon | E 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | S 10 - 20 |
| Friday Night | SE 15 - 25 |
| Saturday Morning | ESE 20 - 30 |
| Saturday Afternoon | E 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | S 5 - 15 |
| Friday Night | SW 15 - 25 |
| Saturday Morning | S 10 - 20 |
| Saturday Afternoon | ENE 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | SE 10 - 20 | ESE 10 - 20 | S 10 - 20 | SW 20 - 30 | WSW 20 - 30 |
| Friday Night | ENE 20 - 30 | ENE 20 - 30 | SE 25 - 35 | SSE 20 - 30 | SW 25 - 35 |
| Saturday Morning | ENE 30 - 40 | ENE 25 - 35 | ENE 35 - 45 | ENE 30 - 40 | S 15 - 25 |
| Saturday Afternoon | ENE 25 - 35 | E 20 - 30 | E 30 - 40 | ENE 25 - 35 | SE 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | SE 10 - 20 |
| Friday Night | ENE 20 - 30 |
| Saturday Morning | ENE 30 - 40 |
| Saturday Afternoon | ENE 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Evening | ESE 10 - 20 |
| Friday Night | ENE 20 - 30 |
| Saturday Morning | ENE 25 - 35 |
| Saturday Afternoon | E 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | S 10 - 20 |
| Friday Night | SE 25 - 35 |
| Saturday Morning | ENE 35 - 45 |
| Saturday Afternoon | E 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | SW 20 - 30 |
| Friday Night | SSE 20 - 30 |
| Saturday Morning | ENE 30 - 40 |
| Saturday Afternoon | ENE 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | WSW 20 - 30 |
| Friday Night | SW 25 - 35 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | SE 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 Friday, February 8, 2019
Extended Weather Synopsis for Friday night through Friday
Before we catch our breath from the weekend snow, a new low pressure system will be developing off the coast late Sunday afternoon, spreading snow inland Sunday night. The storm track is still uncertain as it passes inland overnight. Forecast models deliver a nice shot of cold snow and wind to the Mt. Hood region, but offer different solutions to how far north the precipitation shield extends. There's a good chance the north Cascades will see little to no snowfall from this storm while the central and south Washington Cascades pick up light to moderate amounts.
As that system exits Monday morning, a stronger and more potent system is taking aim at the Columbia River Gorge. Again, we have low confidence in the exact storm track. There is a higher confidence that a significant storm will impact the south Washington Cascades and Mt. Hood and that our cold weather isn't relinquishing it's grip on the region anytime soon.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday Night | Snow Level | 0' - 0' | 0' - 0' | 0' - 1000' | * |
| Monday | Snow Level | 0' - 0' | 0' - 0' | 0' - 1000' | * |
| Monday Night | Snow Level | 0' - 0' | 0' - 0' | 500' - 1500' | * |
| Tuesday | Snow Level | 0' - 0' | 0' - 0' | 500' - 1500' | * |
| Mt. Baker | Elevation |
|---|---|
| Sunday Night |
Snow Level 0' - 0' (Easterly Flow *) |
| Monday |
Snow Level 0' - 0' (Easterly Flow *) |
| Monday Night |
Snow Level 0' - 0' (Easterly Flow *) |
| Tuesday |
Snow Level 0' - 0' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night |
Snow Level 0' - 0' (Easterly Flow *) |
| Monday |
Snow Level 0' - 0' (Easterly Flow *) |
| Monday Night |
Snow Level 0' - 0' (Easterly Flow *) |
| Tuesday |
Snow Level 0' - 0' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night |
Snow Level 0' - 1000' (Easterly Flow *) |
| Monday |
Snow Level 0' - 1000' (Easterly Flow *) |
| Monday Night |
Snow Level 500' - 1500' (Easterly Flow *) |
| Tuesday |
Snow Level 500' - 1500' (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 Feb 8, 2019
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