Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Monday & Friday
The skinny upper level ridge that is currently centered along the US west coast and extends far north into the Yukon will continue to weaken today as a Pacific frontal system approaches. The front will spread mid and high clouds inland today...but will weaken and split as it reaches the Olympic peninsula overnight. Easterly flow through the Cascade passes could allow for a light mix of precipitation types from late Monday night through Tuesday afternoon. The front will decay over the west slopes on Tuesday, but a another upper level wave will around 130 W on Tuesday night should pass through Cascades and Mt. Hood area Tuesday night delivering a more substantial shot of precipitation.
The latest model forecasts agree on the timing of the heavier precipitation Tuesday night, however, most now track the associated surface low into Vancouver Island. The net effect of this more northerly track versus the weak surface low heading into southern Washington will be a delay in the cooler air arriving Tuesday night and an increase in precipitation amounts through Wednesday morning.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Monday Afternoon - Monday Evening |
Cloudy with lowering cloud bases this afternoon. Cooler Cascade passes, mostly cloudy and breezy Snoqualmie Pass. |
| Monday Night |
Light rain and snow mainly Olympics with very light precipitation possible west slopes of the Cascades late. Otherwise cloudy. |
| Tuesday |
Periods of light rain and snow, except light possible mixed precipitation near Cascade passes. |
| Tuesday Night |
Moderate to occasionally heavy rain and snow Tuesday night. |
Mt. Hood Area
| Monday Afternoon - Monday Evening |
Cloudy with clouds lowering in the afternoon and evening. |
| Monday Night - Tuesday |
Light rain and snow developing overnight. |
| Tuesday Night |
Moderate to occasionally heavy rain and snow Tuesday night. |
East slopes of the Washington Cascades
| Monday Afternoon - Monday Evening |
Mostly cloudy, with lowering clouds in the afternoon and evening. |
| Monday Night |
Cloudy. |
| Tuesday |
Light rain and snow, except light possible mixed precipitation near Cascade passes. |
| Tuesday Night |
Light to moderate rain and snow. |
Issued: 2:15 PM PST Monday, January 27, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Afternoon | Freezing Level * | 8500' | ' | ' | ' | ' | 7500' | ' | 8000' |
| Monday Night - Tuesday Morning | Snow Level * | 6500' | ' | ' | ' | ' | 3000' | ' | 5000' |
| Tuesday Afternoon - Tuesday Evening | Snow Level * | 6000' | ' | ' | ' | ' | 5000' | ' | 7000' |
| Tuesday Night | Snow Level | 5500' | ' | ' | ' | ' | 5000' | ' | 6500' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level 6500' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level 6000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 5500' |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' |
| Washington Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' |
| Leavenworth | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 5000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Monday Night - Tuesday Morning |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Evening |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 6500' |
* 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 | Friday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | 0 - 0.50 |
| Mt Baker Ski Area | LT 0.10 | 0 - 0.75 |
| Washington Pass | LT 0.10 | 0 - 0.50 |
| Stevens Pass | LT 0.10 | 0.75 - 1.00 |
| Snoqualmie Pass | LT 0.10 | 0 - 1.00 |
| Mission Ridge | LT 0.10 | LT 0.25 |
| Crystal Mt | LT 0.10 | 0 - 0.50 |
| Paradise | LT 0.10 | 1.00 - 1.50 |
| White Pass | LT 0.10 | 0.50 - 0.75 |
| Mt Hood Meadows | LT 0.10 | 1.00 - 1.50 |
| Timberline | LT 0.25 | 1.50 - 2.00 |
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: 2:15 PM PST Monday, January 27, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Afternoon | S 0 - 10 | --- - | ESE 15 - 30 | --- - | SE 0 - 10 |
| Monday Night - Tuesday Morning | S 5 - 15 | --- - | SE 10 - 20 | --- - | S 10 - 20 |
| Tuesday Afternoon | SW 5 - 15 | --- - | S 10 - 20 | --- - | SW 10 - 20 |
| Tuesday Night | WSW 10 - 20 | --- - | WSW 15 - 25 | --- - | SW 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon | S 0 - 10 |
| Monday Night - Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | WSW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon | ESE 15 - 30 |
| Monday Night - Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | S 10 - 20 |
| Tuesday Night | WSW 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Afternoon | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon | SE 0 - 10 |
| Monday Night - Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night | SW 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Afternoon | S 0 - 10 |
| Monday Night - Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | WSW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon | ESE 15 - 30 |
| Monday Night - Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | S 10 - 20 |
| Tuesday Night | WSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon | --- - |
| Monday Night - Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon | SE 0 - 10 |
| Monday Night - Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night | SW 20 - 30 |
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 | |
|---|---|---|---|---|---|
| Monday Afternoon - Tuesday Morning | --- - | --- - | W 5 - 15 | --- - | W 5 - 15 |
| Tuesday | --- - | --- - | W 20 - 30 | --- - | W 15 - 25 |
| Tuesday Night | --- - | --- - | W 20 - 35 | --- - | WSW 30 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | W 5 - 15 |
| Tuesday | W 20 - 30 |
| Tuesday Night | W 20 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon - Tuesday Morning | W 5 - 15 |
| Tuesday | W 15 - 25 |
| Tuesday Night | WSW 30 - 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: 2:15 PM PST Monday, January 27, 2014
Extended Weather Synopsis for Friday night through Friday
The jet stream and associated precipitation from the frontal system should sag south on Wednesday...taking the heavier precipitation down into Mt. Hood and allowing snow levels to cool further. Showers could be on the heavier side for Mt. Hood on Wednesday. Forecast details are messy through the extended, but the general idea is that the flow will turn more northerly Wednesday night into Thursday as a long wave trough in the northerly branch of the jet stream digs over the PNW. A weak surface low may develop offshore Thursday, and help direct showers inland at even cooler snow levels...mainly for the west slopes and Mt. Hood. A drying trend should begin sometime Friday and extend into the weekend.
Extended Weather
Olympics and Washington Cascades
Light to moderate rain and snow showers, heaviest west slopes. Cooling trend.
Mostly cloudy with light rain and snow showers ending.
Mt. Hood Area
Moderate rain and snow showers. Cooling trend.
Mostly cloudy with light rain and snow showers, cooler.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday Morning | Snow Level | ' - ' | 4000' - 5000' | 4500' - 5500' | |
| Wednesday Afternoon - Wednesday Evening | Snow Level | ' - ' | 3500' - 4500' | 3500' - 4500' | |
| Thursday Night - Friday | Snow Level | ' - ' | 1500' - 2500' | 2000' - 3000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Morning |
Snow Level ' - ' |
| Wednesday Afternoon - Wednesday Evening |
Snow Level ' - ' |
| Thursday Night - Friday |
Snow Level ' - ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 4000' - 5000' |
| Wednesday Afternoon - Wednesday Evening |
Snow Level 3500' - 4500' |
| Thursday Night - Friday |
Snow Level 1500' - 2500' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 4500' - 5500' |
| Wednesday Afternoon - Wednesday Evening |
Snow Level 3500' - 4500' |
| Thursday Night - Friday |
Snow Level 2000' - 3000' |
* 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 27, 2014
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