Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Thursday & Wednesday
The upper ridge over the western U.S. will provide the PNW with one more day of high freezing levels and light winds. A strong temperature inversion will continue today, with the warmest temperatures occurring mid-mountain and extending into the alpine. Low clouds and fog along the east slopes of the eastern Cascades may push into the Cascade Passes with easterly flow increasing during the daylight hours.
A weak north-south oriented front will approach the coast Friday with the energy splitting as the front nears the coast. Mid and high level clouds will increase over the area in advance of the weak frontal system. Light showers are possible Friday night and the flow aloft will become westerly.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes and the Mt. Hood area
| Thursday |
Warm and mostly sunny, except locally cooler and cloudier at times in valleys and the Cascade Passes. |
| Thursday Night - Friday |
Becoming mostly cloudy Friday with increasing mid and high level clouds. |
| Friday Night |
Cloudy. Light rain and showers possible late Friday night. |
East slopes of the Washington Cascades
| Thursday |
Cool and cloudy lower slopes. Mostly clear and warm upper slopes of the east Cascades. |
| Thursday Night - Friday |
Becoming mostly cloudy Friday with increasing mid and high level clouds. |
| Friday Night |
Cloudy. Light rain and showers possible late Friday night along the Cascade crest. |
Issued: 1:29 PM PST Thursday, January 8, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday | Freezing Level * | 11500' | 11000' | 10000' | ' | ' | 11000' | ' | 11500' |
| Thursday Night - Friday Morning | Freezing Level * | 10000' | 10000' | 9000' | ' | ' | 10000' | ' | 11000' |
| Friday Afternoon | Freezing Level * | 9000' | 8500' | 8000' | ' | ' | 9000' | ' | 10000' |
| Friday Night | Snow Level | 5000' | 4000' | 4000' | ' | ' | 4500' | ' | 6000' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday |
Freezing Level 11500' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Friday Night |
Snow Level 5000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday |
Freezing Level 11000' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Friday Night |
Snow Level 4000' |
| Washington Pass | Elevation |
|---|---|
| Thursday |
Freezing Level 10000' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Friday Night |
Snow Level 4000' |
| Leavenworth | Elevation |
|---|---|
| Thursday |
Freezing Level ' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level ' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Friday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Thursday |
Freezing Level ' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level ' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Friday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday |
Freezing Level 11000' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Friday Night |
Snow Level 4500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday |
Freezing Level ' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level ' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Friday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Thursday |
Freezing Level 11500' (Easterly Flow *) |
| Thursday Night - Friday Morning |
Freezing Level 11000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Friday Night |
Snow Level 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.
Precipitation Forecast
| Wednesday | Wednesday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.10 |
| Stevens Pass | LT 0.10 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | LT 0.10 |
| White Pass | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 |
| Timberline | LT 0.10 | 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: 1:29 PM PST Thursday, January 8, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Afternoon | E 0 - 10 | E 0 - 10 | E 5 - 15 | --- - | E 5 - 15 |
| Thursday Night | SW 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | --- - | E 0 - 10 |
| Friday - Friday Night | SW 5 - 15 | SW 0 - 10 | W 0 - 10 | --- - | WSW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Afternoon | E 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday - Friday Night | SW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Afternoon | E 0 - 10 |
| Thursday Night | VAR 0 - 10 |
| Friday - Friday Night | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Afternoon | E 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday - Friday Night | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Afternoon | --- - |
| Thursday Night | --- - |
| Friday - Friday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Thursday Afternoon | E 5 - 15 |
| Thursday Night | E 0 - 10 |
| Friday - Friday Night | WSW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Afternoon | E 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday - Friday Night | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Afternoon | E 0 - 10 |
| Thursday Night | VAR 0 - 10 |
| Friday - Friday Night | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Afternoon | E 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday - Friday Night | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Afternoon | --- - |
| Thursday Night | --- - |
| Friday - Friday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Afternoon | E 5 - 15 |
| Thursday Night | E 0 - 10 |
| Friday - Friday Night | WSW 5 - 15 |
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 | |
|---|---|---|---|---|---|
| Thursday | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | --- - | VAR 0 - 10 |
| Thursday Night - Friday Morning | W 5 - 15 | W 5 - 15 | W 5 - 15 | --- - | W 5 - 15 |
| Friday Afternoon - Friday Night | WSW 15 - 25 | W 15 - 25 | W 15 - 25 | --- - | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday | VAR 0 - 10 |
| Thursday Night - Friday Morning | W 5 - 15 |
| Friday Afternoon - Friday Night | WSW 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday | VAR 0 - 10 |
| Thursday Night - Friday Morning | W 5 - 15 |
| Friday Afternoon - Friday Night | W 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday | VAR 0 - 10 |
| Thursday Night - Friday Morning | W 5 - 15 |
| Friday Afternoon - Friday Night | W 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday | --- - |
| Thursday Night - Friday Morning | --- - |
| Friday Afternoon - Friday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday | VAR 0 - 10 |
| Thursday Night - Friday Morning | W 5 - 15 |
| Friday Afternoon - Friday Night | W 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: 1:29 PM PST Thursday, January 8, 2015
Extended Weather Synopsis for Wednesday night through Wednesday
Light showers at moderate snow levels in westerly flow should continue on Saturday. Weak ridging will build over the area Saturday night as a new weather system develops offshore. This weather system will also be weak. Light precipitation should mainly affect the Mt. Hood area on Sunday as it traverses inland from the Oregon Coast. Light showers should be seen elsewhere Sunday and Sunday night. A drying trend should begin on Monday as an upper ridge builds offshore.
Extended Weather
Olympics, Washington Cascades and the Mt. Hood area
Saturday - Saturday NightCloudy with light rain and snow showers.
SundayPeriods of light rain and snow central and north Cascades. Steadier light rain and snow south Washington Cascades and Mt. Hood. Slight cooling trend.
Sunday Night - Monday MorningMostly cloudy with light rain and snow showers.
Monday AfternoonPartial clearing. Isolated light rain and snow showers.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday | Snow Level | 3500' - 4500' | 4000' - 5000' | 5000' - 6000' | |
| Saturday Night - Monday | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday |
Snow Level 3500' - 4500' |
| Saturday Night - Monday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday |
Snow Level 4000' - 5000' |
| Saturday Night - Monday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Saturday |
Snow Level 5000' - 6000' |
| Saturday Night - Monday |
Snow Level 4000' - 5000' |
* 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 8, 2015
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