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 & Friday
The northerly jet will continue to direct weather systems into central British Columbia today. Only high clouds should affect the northern half of the Cascades and Olympics...with clearer skies further south into Mt. Hood. An upper level trough of low pressure should dig over southern B.C and Washington state on Friday...leading to a chance of showers mainly for the north Cascades. Snow levels should dip slightly on Friday and crest level winds should become breezy during the day as well. An increase in onshore flow and low level moisture should make for a mostly cloudy day over the west slopes of the north Cascades with partly to mostly sunny conditions further south. The chance for showers will diminish Friday night as an upper level ridge amplifies offshore and the upper level trough passes into Montana.
Weather Forecast
North Washington Cascades
| Thursday - Thursday Night |
Mostly cloudy. |
| Friday - Friday Night |
Mostly cloudy with scattered light rain or snow showers diminishing Friday night. |
Olympics and South and Central Washington Cascades
| Thursday - Thursday Night |
Partly to mostly clear, cloudier central Washington Cascades. |
| Friday - Friday Evening |
Partly cloudy, except mostly cloudy west slopes of the central Washington Cascades. Isolated rain and snow showers. |
| Friday Night |
Partly cloudy. |
Mt. Hood Area
| Thursday - Friday Night |
Mostly clear, except periods of high clouds. |
Issued: 2:28 PM PDT Thursday, April 10, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Afternoon - Thursday Night | Freezing Level | 6000' | ' | ' | ' | ' | 7000' | ' | 9500' |
| Friday Morning | Snow Level | 5000' | ' | ' | ' | ' | 4500' | ' | 6500' |
| Friday Afternoon - Friday Evening | Snow Level | 5000' | ' | ' | ' | ' | 5000' | ' | 8000' |
| Friday Night | Freezing Level | 4000' | ' | ' | ' | ' | 4000' | ' | 8000' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level 6000' |
| Friday Morning |
Snow Level 5000' |
| Friday Afternoon - Friday Evening |
Snow Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level ' |
| Friday Morning |
Snow Level ' |
| Friday Afternoon - Friday Evening |
Snow Level ' |
| Friday Night |
Freezing Level ' |
| Washington Pass | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level ' |
| Friday Morning |
Snow Level ' |
| Friday Afternoon - Friday Evening |
Snow Level ' |
| Friday Night |
Freezing Level ' |
| Leavenworth | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level ' |
| Friday Morning |
Snow Level ' |
| Friday Afternoon - Friday Evening |
Snow Level ' |
| Friday Night |
Freezing Level ' |
| Stevens Pass | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level ' |
| Friday Morning |
Snow Level ' |
| Friday Afternoon - Friday Evening |
Snow Level ' |
| Friday Night |
Freezing Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level 7000' |
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon - Friday Evening |
Snow Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level ' |
| Friday Morning |
Snow Level ' |
| Friday Afternoon - Friday Evening |
Snow Level ' |
| Friday Night |
Freezing Level ' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night |
Freezing Level 9500' |
| Friday Morning |
Snow Level 6500' |
| Friday Afternoon - Friday Evening |
Snow Level 8000' |
| Friday Night |
Freezing Level 8000' |
* 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 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | LT 0.25 |
| 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: 2:28 PM PDT Thursday, April 10, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 | --- - | NW 5 - 15 | --- - | NW 5 - 15 |
| Friday | NW 10 - 20 | --- - | NW 10 - 20 | --- - | NW 10 - 20 |
| Friday Night | N 0 - 10 | --- - | NW 0 - 10 | --- - | NW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | N 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday | --- - |
| Friday Night | --- - |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | NW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday | --- - |
| Friday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | NW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | N 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday | --- - |
| Friday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | NW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday | --- - |
| Friday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | NW 5 - 15 |
| Friday | NW 10 - 20 |
| Friday Night | NW 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 Afternoon - Thursday Night | --- - | --- - | NW 15 - 25 | --- - | WNW 10 - 20 |
| Friday Morning | --- - | --- - | NW 30 - 40 | --- - | NW 15 - 25 |
| Friday Afternoon - Friday Evening | --- - | --- - | NW 30 - 45 | --- - | NW 25 - 35 |
| Friday Night | --- - | --- - | NW 15 - 25 | --- - | NW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night | --- - |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | NW 15 - 25 |
| Friday Morning | NW 30 - 40 |
| Friday Afternoon - Friday Evening | NW 30 - 45 |
| Friday Night | NW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | --- - |
| Friday Morning | --- - |
| Friday Afternoon - Friday Evening | --- - |
| Friday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Afternoon - Thursday Night | WNW 10 - 20 |
| Friday Morning | NW 15 - 25 |
| Friday Afternoon - Friday Evening | NW 25 - 35 |
| Friday Night | NW 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: 2:28 PM PDT Thursday, April 10, 2014
Extended Weather Synopsis for Friday night through Friday
The upper level ridge located at 130W on Saturday afternoon should slowly migrate eastward over the weekend. Dry and increasingly warmer weather is expected over the weekend. On Saturday...freezing levels will moderate as low clouds along the west slopes give way to mostly sunny skies in the afternoon with drier northerly flow aloft. Warmer air should make it's way over the region on Sunday with freezing levels nearing 10000 feet in many areas. However, breezy easterlies winds up to crest level should develop in response to increasing offshore flow Saturday night and Sunday. An approaching shortwave trough may swing into Vancouver Island early Monday and knock freezing levels down during the day.
Extended Weather
Olympics, Washington Cascades and Mt. Hood Area
Mostly clear, except mostly cloudy along the west slopes Saturday morning.
Mostly clear and warm.
Partly cloudy north part, mostly sunny south part. Cooling trend west slopes of the Cascades.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday - Sunday Morning | Freezing Level | ' - ' | 6000' - 7000' | 7000' - 8500' | |
| Sunday Afternoon - Sunday Night | Freezing Level | ' - ' | 8500' - 9500' | 9500' - 10500' | |
| Monday | Freezing Level | ' - ' | 6000' - 8000' | 7000' - 9000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday - Sunday Morning |
Freezing Level ' - ' |
| Sunday Afternoon - Sunday Night |
Freezing Level ' - ' |
| Monday |
Freezing Level ' - ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday - Sunday Morning |
Freezing Level 6000' - 7000' |
| Sunday Afternoon - Sunday Night |
Freezing Level 8500' - 9500' |
| Monday |
Freezing Level 6000' - 8000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday - Sunday Morning |
Freezing Level 7000' - 8500' |
| Sunday Afternoon - Sunday Night |
Freezing Level 9500' - 10500' |
| Monday |
Freezing Level 7000' - 9000' |
* 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 10, 2014
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