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 weak upper level disturbance passing through in NW flow aloft Saturday afternoon through this morning was lighter and further north than expected with generally less than 6 inches of new snow through early Sunday morning. Light snow, mainly near and north of Snoqualmie Pass should continue through midday Sunday for the Olympics and Cascades while Mt. Hood remains dry. A warm front offshore should bring additional light snow beginning mid-afternoon to the Washington Cascades. This system looks to lift a bit further north as it traverses the area from west to east later this afternoon and this evening. Snow levels should rise through the late afternoon and early evening from Mt. Hood to around Snoqualmie Pass. Precipitation should increase in the late afternoon and early evening hours.
Cold high pressure over the Canadian Rockies should slide south and west tonight and begin a period of easterly offshore flow for the Cascade Passes. A large west to east temperature gradient should develop over Washington State through early next week. Snow levels near the Cascade Passes will remain quite cool on Monday while free-air snow levels over the Olympics rise to around 6000 or 7000 feet. Showers behind the frontal system should wind down overnight. A more disorganized frontal system should lift over the area Monday afternoon and evening bringing another round of light precipitation. This could be mixed precipitation for the Passes either Monday afternoon or night.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Sunday Morning |
Light snow, mainly Snoqualmie Pass and northward. |
| Sunday Afternoon - Sunday Evening |
Light rain or snow increasing and becoming occasionally moderate in the mid-afternoon and spreading to the south Washington Cascades during the late afternoon. Gradual warming Olympics and Snoqualmie Pass and south. |
| Sunday Night - Monday Morning |
Mostly cloudy with light rain or snow showers. |
| Monday Afternoon - Monday Night |
Periods of light rain and snow. Gradual warming away from the Cascade Passes. |
East slopes of the Washington Cascades
| Sunday Morning |
Periods of light snow, mainly I-90 and northward. |
| Sunday Afternoon - Sunday Evening |
Light snow increasing and becoming occasionally moderate near the crest in the mid-afternoon and spreading to the southeast Washington Cascades during the late afternoon. Gradual warming southeast Cascades. |
| Sunday Night - Monday Morning |
Mostly cloudy with light snow showers. |
| Monday Afternoon - Monday Night |
Mostly cloudy with period of light snow near the crest. |
Mt. Hood Area
| Sunday |
Partly to mostly cloudy. Slight warming. |
| Sunday Night |
Light rain or snow increasing and becoming occasionally moderate in the early evening. Gradual warming overnight. |
| Monday Morning |
Mostly cloudy with light rain or snow showers. |
| Monday Afternoon - Monday Night |
Mostly cloudy with periods of light rain and snow. |
Issued: 7:31 AM PST Sunday, February 23, 2014
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Snow Level | 2500' | ' | ' | ' | ' | 2000' | ' | 4000' |
| Sunday Mid-day | Snow Level | 2500' | ' | ' | ' | ' | 2500' | ' | 4000' |
| Sunday Afternoon | Snow Level | 2000' | ' | ' | ' | ' | 3000' | ' | 4500' |
| Sunday Night | Snow Level * | 2500' | ' | ' | ' | ' | 2000' | ' | 6000' |
| Monday | Snow Level * | 5000' | ' | ' | ' | ' | 2000' | ' | 6500' |
| Monday Night | Snow Level * | 7000' | ' | ' | ' | ' | 4000' | ' | 7000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Mid-day |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 2500' (Easterly Flow *) |
| Monday |
Snow Level 5000' (Easterly Flow *) |
| Monday Night |
Snow Level 7000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Mid-day |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Monday |
Snow Level ' (Easterly Flow *) |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Mid-day |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Monday |
Snow Level ' (Easterly Flow *) |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Mid-day |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Monday |
Snow Level ' (Easterly Flow *) |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Mid-day |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Monday |
Snow Level ' (Easterly Flow *) |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Mid-day |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 3000' |
| Sunday Night |
Snow Level 2000' (Easterly Flow *) |
| Monday |
Snow Level 2000' (Easterly Flow *) |
| Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Mid-day |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Monday |
Snow Level ' (Easterly Flow *) |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Snow Level 4000' |
| Sunday Mid-day |
Snow Level 4000' |
| Sunday Afternoon |
Snow Level 4500' |
| Sunday Night |
Snow Level 6000' (Easterly Flow *) |
| Monday |
Snow Level 6500' (Easterly Flow *) |
| Monday Night |
Snow Level 7000' (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
| Sunday | Sunday | |
|---|---|---|
| Hurricane Ridge | 0.25 - 0.50 | 0.25 - 0.50 |
| Mt Baker Ski Area | 0.50 - 0.75 | LT 0.25 |
| Washington Pass | 0.50 - 0.75 | LT 0.25 |
| Stevens Pass | 0 - 0.75 | LT 0.25 |
| Snoqualmie Pass | 0 - 0.75 | 0.25 - 0.50 |
| Mission Ridge | 0.25 - 0.50 | LT 0.25 |
| Crystal Mt | LT 0.25 | LT 0.25 |
| Paradise | 0 - 0.50 | 0 - 0.50 |
| White Pass | 0.25 - 0.50 | LT 0.25 |
| Mt Hood Meadows | 0 - 0.50 | 0.25 - 0.50 |
| Timberline | 0 - 0.50 | 0.25 - 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: 7:31 AM PST Sunday, February 23, 2014
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | W 5 - 15 | --- - | W 10 - 20 | --- - | WSW 5 - 15 |
| Sunday Afternoon | SW 10 - 20 | --- - | SW 10 - 20 | --- - | SW 10 - 20 |
| Sunday Evening | SW 5 - 15 | --- - | SW 10 - 20 | --- - | W 15 - 25 |
| Sunday Night - Monday Mid-day | SW 5 - 15 | --- - | ESE 5 - 15 | --- - | SW 5 - 15 |
| Monday Afternoon - Monday Evening | S 5 - 15 | --- - | ESE 10 - 20 | --- - | S 5 - 15 |
| Monday Night | S 5 - 15 | --- - | ESE 15 - 25 | --- - | E 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | SW 5 - 15 |
| Sunday Night - Monday Mid-day | SW 5 - 15 |
| Monday Afternoon - Monday Evening | S 5 - 15 |
| Monday Night | S 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Evening | --- - |
| Sunday Night - Monday Mid-day | --- - |
| Monday Afternoon - Monday Evening | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | W 10 - 20 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night - Monday Mid-day | ESE 5 - 15 |
| Monday Afternoon - Monday Evening | ESE 10 - 20 |
| Monday Night | ESE 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Evening | --- - |
| Sunday Night - Monday Mid-day | --- - |
| Monday Afternoon - Monday Evening | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | WSW 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | W 15 - 25 |
| Sunday Night - Monday Mid-day | SW 5 - 15 |
| Monday Afternoon - Monday Evening | S 5 - 15 |
| Monday Night | E 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | SW 5 - 15 |
| Sunday Night - Monday Mid-day | SW 5 - 15 |
| Monday Afternoon - Monday Evening | S 5 - 15 |
| Monday Night | S 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Evening | --- - |
| Sunday Night - Monday Mid-day | --- - |
| Monday Afternoon - Monday Evening | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | W 10 - 20 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night - Monday Mid-day | ESE 5 - 15 |
| Monday Afternoon - Monday Evening | ESE 10 - 20 |
| Monday Night | ESE 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Evening | --- - |
| Sunday Night - Monday Mid-day | --- - |
| Monday Afternoon - Monday Evening | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | WSW 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Sunday Evening | W 15 - 25 |
| Sunday Night - Monday Mid-day | SW 5 - 15 |
| Monday Afternoon - Monday Evening | S 5 - 15 |
| Monday Night | E 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 Morning | --- - | --- - | W 25 - 35 | --- - | W 25 - 35 |
| Sunday Night | --- - | --- - | WNW 25 - 35 | --- - | WNW 20 - 30 |
| Monday | --- - | --- - | WNW 15 - 25 | --- - | WNW 15 - 25 |
| Monday Night | --- - | --- - | WNW 5 - 15 | --- - | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Night | --- - |
| Monday | --- - |
| Monday Night | --- - |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Night | --- - |
| Monday | --- - |
| Monday Night | --- - |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | W 25 - 35 |
| Sunday Night | WNW 25 - 35 |
| Monday | WNW 15 - 25 |
| Monday Night | WNW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Night | --- - |
| Monday | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | W 25 - 35 |
| Sunday Night | WNW 20 - 30 |
| Monday | WNW 15 - 25 |
| 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.
Issued: 7:31 AM PST Sunday, February 23, 2014
Extended Weather Synopsis for Sunday night through Sunday
Split flow should develop over the Pacific Northwest through the extended period with a blocking high over Alaska and a stronger southern jet aiming systems into California.
Isolated showers in southerly flow may continue on Tuesday and Tuesday night with continued easterly flow through the passes and possibly affecting Mt. Hood as cold air over the east slopes drains to the west. Wednesday may be a dry day as a weak upper level ridge stays over eastern Washington and a decaying frontal band approaches the coast. Isolated showers are forecast to return on Thursday as an open wave passes through the PNW while most of the energy and moisture stays well south into California.
Extended Weather
Olympics, Washington Cascades and Mt. Hood Area
Partly to mostly cloudy with isolated showers. Gradual warming continues away from the Cascade Passes and areas on Mt. Hood exposed to cool easterly winds.
Partly cloudy and mild.
Partly to mostly cloudy with isolated rain and snow showers increasing on Thursday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday - Tuesday Night | Snow Level | ' - ' | 3000' - 5000' | 5000' - 7000' | * |
| Wednesday | Freezing Level | ' - ' | 6500' - 7500' | 7000' - 8000' | |
| Wednesday Night - Thursday | Freezing Level | ' - ' | 5000' - 6000' | 5000' - 6000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level ' - ' (Easterly Flow *) |
| Wednesday |
Freezing Level ' - ' |
| Wednesday Night - Thursday |
Freezing Level ' - ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level 3000' - 5000' (Easterly Flow *) |
| Wednesday |
Freezing Level 6500' - 7500' |
| Wednesday Night - Thursday |
Freezing Level 5000' - 6000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday - Tuesday Night |
Snow Level 5000' - 7000' (Easterly Flow *) |
| Wednesday |
Freezing Level 7000' - 8000' |
| Wednesday Night - Thursday |
Freezing Level 5000' - 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.
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 22, 2014
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