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 & Sunday
A wet and warm frontal system passed over the Pacific Northwest Saturday afternoon and Saturday night and brought a moderate amount of rain to lower elevations and 3-10" of heavy wet snow above about 5000' along the west slopes of the Cascades through early Sunday morning. This system has passed to our east and a strong ridge of high pressure continues to amplify offshore inside of 130W this afternoon. Lingering light rain and snow that affected the west slopes and Mt. Hood this morning has come to an end. However, ample upper level moisture streaming over the ridge and low level moisture trapped along the west slopes should prevent much clearing.
A warm front may brush the Olympics and north Cascades tonight through mid-day Monday. Otherwise a general drying and warming trend should ensue as the upper level ridge moves over the area. Freezing levels on Monday should peak between 8000-10000 feet...with some high clouds still slipping under the ridge, especially over northern sections. A front will approach the area Monday night from the west.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Sunday Afternoon - Monday Morning |
Mostly cloudy with occasional very light rain and snow Olympics and north Cascades. Gradual warming trend. |
| Monday Afternoon |
Becoming mostly sunny with some high clouds. Warm. |
| Monday Night |
Increasing clouds overnight. |
Mt. Hood Area
| Sunday Afternoon - Sunday Night |
Mostly cloudy with occasional very light rain and snow. Gradual warming and clearing trend overnight. |
| Monday |
Mostly sunny and warm. |
| Monday Night |
Mostly clear. |
East slopes of the Washington Cascades
| Sunday Afternoon - Monday Morning |
Partly cloudy. Gradual warming trend. |
| Monday Afternoon |
Becoming mostly sunny with some high clouds. Warm. |
| Monday Night |
Mostly clear becoming partly cloudy overnight. |
Issued: 1:40 PM PDT Sunday, April 6, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Afternoon | Snow Level | 6000' | ' | ' | ' | ' | 5500' | ' | 7000' |
| Sunday Night - Monday Morning | Snow Level | 7000' | ' | ' | ' | ' | 6500' | ' | 7500' |
| Monday Afternoon - Monday Night | Freezing Level | 8500' | ' | ' | ' | ' | 9500' | ' | 10500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 6000' |
| Sunday Night - Monday Morning |
Snow Level 7000' |
| Monday Afternoon - Monday Night |
Freezing Level 8500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night - Monday Morning |
Snow Level ' |
| Monday Afternoon - Monday Night |
Freezing Level ' |
| Washington Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night - Monday Morning |
Snow Level ' |
| Monday Afternoon - Monday Night |
Freezing Level ' |
| Leavenworth | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night - Monday Morning |
Snow Level ' |
| Monday Afternoon - Monday Night |
Freezing Level ' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night - Monday Morning |
Snow Level ' |
| Monday Afternoon - Monday Night |
Freezing Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 5500' |
| Sunday Night - Monday Morning |
Snow Level 6500' |
| Monday Afternoon - Monday Night |
Freezing Level 9500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level ' |
| Sunday Night - Monday Morning |
Snow Level ' |
| Monday Afternoon - Monday Night |
Freezing Level ' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon |
Snow Level 7000' |
| Sunday Night - Monday Morning |
Snow Level 7500' |
| Monday Afternoon - Monday Night |
Freezing Level 10500' |
* 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 | Sunday | |
|---|---|---|
| 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 0.25 | LT 0.10 |
| Timberline | 0 - 0.50 | 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: 1:40 PM PDT Sunday, April 6, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Afternoon | SW 5 - 15 | --- - | W 5 - 15 | --- - | W 10 - 20 |
| Sunday Night - Monday Evening | S 5 - 15 | --- - | SW 0 - 10 | --- - | SW 0 - 10 |
| Monday Night | SW 10 - 20 | --- - | SW 0 - 10 | --- - | SW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Afternoon | SW 5 - 15 |
| Sunday Night - Monday Evening | S 5 - 15 |
| Monday Night | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Evening | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Afternoon | W 5 - 15 |
| Sunday Night - Monday Evening | SW 0 - 10 |
| Monday Night | SW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Evening | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Afternoon | W 10 - 20 |
| Sunday Night - Monday Evening | SW 0 - 10 |
| Monday Night | SW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Afternoon | SW 5 - 15 |
| Sunday Night - Monday Evening | S 5 - 15 |
| Monday Night | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Evening | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | W 5 - 15 |
| Sunday Night - Monday Evening | SW 0 - 10 |
| Monday Night | SW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday Evening | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | W 10 - 20 |
| Sunday Night - Monday Evening | SW 0 - 10 |
| Monday 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 | |
|---|---|---|---|---|---|
| Sunday Afternoon | --- - | --- - | NW 30 - 40 | --- - | NW 25 - 35 |
| Sunday Night - Monday | --- - | --- - | WSW 15 - 25 | --- - | WSW 15 - 25 |
| Monday Night | --- - | --- - | SW 20 - 30 | --- - | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday | --- - |
| Monday Night | --- - |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 30 - 40 |
| Sunday Night - Monday | WSW 15 - 25 |
| Monday Night | SW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Afternoon | --- - |
| Sunday Night - Monday | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Afternoon | NW 25 - 35 |
| Sunday Night - Monday | WSW 15 - 25 |
| Monday 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.
Issued: 1:40 PM PDT Sunday, April 6, 2014
Extended Weather Synopsis for Sunday night through Sunday
A Pacific frontal system should slowly pass south and east over the area Tuesday...bringing a shot of light to moderate precipitation for the Cascades but largely missing Mt. Hood as it passes through Tuesday night. Behind this front a sharp cooling trend will take place late Tuesday night with leftover showers at lower snow levels on Wednesday. Weak upper level ridging and mainly dry weather should take hold Wednesday night and Thursday as the next frontal system in NW flow aloft moves toward Vancouver Island.
Extended Weather
Olympics, Washington Cascades
Increasing light rain and snow Olympics and north Cascades. Increasing and lowering clouds further south and east.
Light to moderate rain and snow turning to showers overnight. Sharp cooling trend overnight.
Mostly cloudy with scattered light rain and snow showers. Cooler.
Partly to mostly cloudy.
Mt. Hood Area
Partly sunny becoming mostly cloudy in the afternoon.
Light rain and snow turning to showers overnight. Moderate cooling trend overnight.
Partly cloudy with isolated light rain and snow showers.
Partly cloudy.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday | Snow Level | ' - ' | 6000' - 7000' | 7000' - 8000' | |
| Tuesday Night - Wednesday Night | Snow Level | ' - ' | 3500' - 4500' | 5000' - 6000' | |
| Thursday | Freezing Level | ' - ' | 5500' - 7500' | 8000' - 10000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday |
Snow Level ' - ' |
| Tuesday Night - Wednesday Night |
Snow Level ' - ' |
| Thursday |
Freezing Level ' - ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday |
Snow Level 6000' - 7000' |
| Tuesday Night - Wednesday Night |
Snow Level 3500' - 4500' |
| Thursday |
Freezing Level 5500' - 7500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday |
Snow Level 7000' - 8000' |
| Tuesday Night - Wednesday Night |
Snow Level 5000' - 6000' |
| Thursday |
Freezing Level 8000' - 10000' |
* 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 Apr 6, 2014
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