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 & Tuesday
The storm track should continue to stay mainly focused on Oregon and northern California through the short term. A cold upper level low centered over Vancouver Island is part of an elongated E-W longwave trough extending into the northern US plains that continues to keep systems to the south. Another developing weather system offshore should pass through Oregon Friday night delivering a moderate shot of snow to Mt. Hood and the south Washington Cascade and light amounts further north. Pass level and 5000 ft winds are expected to be lighter than they have been during the past week.
The upper low should eject eastward on Saturday...keeping light snow showers in the forecast for all zones through Saturday night.
Temperatures are expected to slowly moderate through the weekend as the arctic air mass over the area slowly modifies.
Weather Forecast
Mt. Hood Area
| Friday Morning - Friday Mid-day |
Partly sunny with occasional flurries. |
| Friday Afternoon - Saturday Morning |
Becoming cloudy with light to moderate snow developing in the late afternoon or early evening. |
| Saturday Afternoon - Saturday Night |
Mostly cloudy with light snow showers. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie and White Passes
| Friday |
Partly sunny with occasional flurries this morning. |
| Friday Night - Saturday Morning |
Increasing clouds with light to moderate snow developing Friday evening south Washington Cascades, with light snow spreading north overnight. |
| Saturday Afternoon - Saturday Night |
Mostly cloudy with light snow showers. |
Olympics and north Washington Cascades
| Friday |
Partly cloudy becoming mostly sunny this afternoon. |
| Friday Night - Saturday Morning |
Becoming mostly cloudy overnight. Light snow of flurries possible, mainly northeast Cascades. |
| Saturday Afternoon - Saturday Night |
Mostly cloudy with light snow showers. |
Issued: 8:49 AM PST Friday, February 7, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday - Saturday Mid-day | Snow Level * | 0' | ' | ' | ' | ' | 0' | ' | 0' |
| Saturday Afternoon - Saturday Night | Snow Level * | 500' | ' | ' | ' | ' | 500' | ' | 1500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level 500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level ' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level ' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level ' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level ' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level ' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level ' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level 500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level ' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Friday - Saturday Mid-day |
Snow Level 0' (Easterly Flow *) |
| Saturday Afternoon - Saturday Night |
Snow Level 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.
Precipitation Forecast
| Tuesday | Tuesday | |
|---|---|---|
| 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 0.25 |
| Snoqualmie Pass | LT 0.10 | LT 0.25 |
| Mission Ridge | LT 0.10 | LT 0.25 |
| Crystal Mt | LT 0.10 | LT 0.25 |
| Paradise | LT 0.10 | LT 0.25 |
| White Pass | LT 0.25 | LT 0.25 |
| Mt Hood Meadows | 0.50 - 0.75 | 0 - 0.50 |
| Timberline | 0.50 - 0.75 | 0 - 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: 8:49 AM PST Friday, February 7, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday - Morning | NW 0 - 10 | --- - | W 0 - 10 | --- - | SW 10 - 20 |
| Friday Afternoon | VAR 0 - 10 | --- - | SSE 5 - 15 | --- - | SW 5 - 15 |
| Friday Night - Saturday Mid-day | E 0 - 10 | --- - | ESE 15 - 25 | --- - | SW 5 - 15 |
| Saturday Afternoon - Saturday Night | S 5 - 15 | --- - | ESE 10 - 20 | --- - | SW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday - Morning | NW 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Friday Night - Saturday Mid-day | E 0 - 10 |
| Saturday Afternoon - Saturday Night | S 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Friday - Morning | --- - |
| Friday Afternoon | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday - Morning | W 0 - 10 |
| Friday Afternoon | SSE 5 - 15 |
| Friday Night - Saturday Mid-day | ESE 15 - 25 |
| Saturday Afternoon - Saturday Night | ESE 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Friday - Morning | --- - |
| Friday Afternoon | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Friday - Morning | SW 10 - 20 |
| Friday Afternoon | SW 5 - 15 |
| Friday Night - Saturday Mid-day | SW 5 - 15 |
| Saturday Afternoon - Saturday Night | SW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday - Morning | NW 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Friday Night - Saturday Mid-day | E 0 - 10 |
| Saturday Afternoon - Saturday Night | S 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday - Morning | --- - |
| Friday Afternoon | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday - Morning | W 0 - 10 |
| Friday Afternoon | SSE 5 - 15 |
| Friday Night - Saturday Mid-day | ESE 15 - 25 |
| Saturday Afternoon - Saturday Night | ESE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday - Morning | --- - |
| Friday Afternoon | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday - Morning | SW 10 - 20 |
| Friday Afternoon | SW 5 - 15 |
| Friday Night - Saturday Mid-day | SW 5 - 15 |
| Saturday Afternoon - Saturday Night | SW 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 | |
|---|---|---|---|---|---|
| Friday Morning | --- - | --- - | WNW 10 - 20 | --- - | W 30 - 40 |
| Friday Afternoon - Friday Evening | --- - | --- - | WSW 15 - 25 | --- - | WSW 20 - 30 |
| Friday Night - Saturday Mid-day | --- - | --- - | WSW 10 - 20 | --- - | W 40 - 50 |
| Saturday Afternoon - Saturday Night | --- - | --- - | W 20 - 30 | --- - | W 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon - Friday Evening | WSW 15 - 25 |
| Friday Night - Saturday Mid-day | WSW 10 - 20 |
| Saturday Afternoon - Saturday Night | W 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night - Saturday Mid-day | --- - |
| Saturday Afternoon - Saturday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | W 30 - 40 |
| Friday Afternoon - Friday Evening | WSW 20 - 30 |
| Friday Night - Saturday Mid-day | W 40 - 50 |
| Saturday Afternoon - Saturday Night | 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.
Issued: 8:49 AM PST Friday, February 7, 2014
Extended Weather Synopsis for Tuesday night through Tuesday
On Sunday, very different model forecast solutions exist...with a completely dry day advertised by some forecast models and a weak weather system and light to moderate snow indicated by others.
There is slightly higher forecast confidence that a weak warm front will approach the area on Sunday night and Monday with light to moderate rain and snow overspreading the area and with snow levels rising further. The weather pattern looks much more active next week with weather systems arriving in westerly flow every 24 to 48 hours at moderate snow levels. The first system in this more consolidated flow arriving Tuesday looks stronger than the ones seen late this week and over the weekend.
Extended Weather
Olympics, Washington Cascades including Stevens, Snoqualmie, and White Passes
Mostly cloudy with light to occasionally moderate snow showers. Slightly warmer.
Light to moderate rain and snow developing Olympics overnight and spreading inland Monday. Lighter precipitation east slopes. Gradual warming continues.
Moderate rain and snow with increasing winds. Lighter precipitation east slopes.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday | Snow Level | ' - ' | 1500' - 2500' | 3000' - 4000' | * |
| Sunday Night | Snow Level | ' - ' | 2000' - 3000' | 3500' - 4500' | * |
| Monday | Snow Level | ' - ' | 3500' - 4500' | 4000' - 5000' | * |
| Monday Night - Tuesday | Snow Level | ' - ' | 2500' - 3500' | 3500' - 4500' | * |
| Mt. Baker | Elevation |
|---|---|
| Sunday |
Snow Level ' - ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' - ' (Easterly Flow *) |
| Monday |
Snow Level ' - ' (Easterly Flow *) |
| Monday Night - Tuesday |
Snow Level ' - ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday |
Snow Level 1500' - 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' - 3000' (Easterly Flow *) |
| Monday |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Monday Night - Tuesday |
Snow Level 2500' - 3500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday |
Snow Level 3000' - 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Monday |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Monday Night - Tuesday |
Snow Level 3500' - 4500' (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 6, 2014
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.