Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday & Friday
Upper level ridging will build offshore today with a dry and eventually sunny day forecast across the Pacific Northwest. Before the sunshine, a mid level cloud deck is hanging tough around for the Olympics and central and north Cascades this morning while clearer skies are seen further south. In the cloudier areas, skies should clear later this morning with just some afternoon cumulus buildup expected. Mostly clear and dry weather will continue overnight.
Flat upper level ridging will move over the region on Wednesday, with freezing levels rising further. However, a closed upper low well off the California coast will spread mid and high clouds over the region from the south during the day, dampening an otherwise warm day for early March. A weakening frontal band extending from the low pressure system will pass over the area Wednesday night producing light precipitation.
Weather Forecast
Olympics
Tuesday | Partly to mostly sunny. |
Tuesday Night | Mostly clear. |
Wednesday | Mostly cloudy becoming cloudy with increasing mid and high level clouds during the day. Mild. |
Wednesday Night | Light rain and snow developing after midnight. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
Tuesday | Partly to mostly sunny north Cascades. Mostly sunny central and south. |
Tuesday Night | Mostly clear. |
Wednesday | Mostly cloudy becoming cloudy with increasing mid and high level clouds during the day. Mild. |
Wednesday Night | Light rain and snow developing after midnight. |
East Slopes of the Washington Cascades
Tuesday | Partly to mostly sunny northeast Cascades. Mostly sunny central-east and southeast. |
Tuesday Night | Mostly clear. |
Wednesday | Mostly cloudy becoming cloudy with increasing mid and high level clouds during the day. Mild. |
Wednesday Night | Light rain and snow developing after midnight. |
Mt. Hood
Tuesday | Mostly sunny. |
Tuesday Night | Mostly clear. |
Wednesday | Mostly cloudy becoming cloudy with increasing mid and high level clouds during the day. Mild. |
Wednesday Night | Light rain and snow developing. |
Issued: 2:58 PM PST Tuesday, March 6, 2018
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Tuesday Afternoon | Freezing Level | 3500' | 3500' | 4000' | ' | ' | 4000' | ' | 5000' |
Tuesday Night | Freezing Level | 3500' | 2000' | 500' | ' | ' | 2000' | ' | 4500' |
Wednesday Morning | Freezing Level | 4500' | 3500' | 3000' | ' | ' | 4000' | ' | 6000' |
Wednesday Afternoon | Freezing Level | 7000' | 6000' | 5500' | ' | ' | 6500' | ' | 8000' |
Wednesday Night | Snow Level * | 4500' | 4000' | 3000' | ' | ' | 4000' | ' | 4500' |
Hurricane Ridge | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level 3500' |
Tuesday Night |
Freezing Level 3500' |
Wednesday Morning |
Freezing Level 4500' |
Wednesday Afternoon |
Freezing Level 7000' |
Wednesday Night |
Snow Level 4500' (Easterly Flow *) |
Mt. Baker | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level 3500' |
Tuesday Night |
Freezing Level 2000' |
Wednesday Morning |
Freezing Level 3500' |
Wednesday Afternoon |
Freezing Level 6000' |
Wednesday Night |
Snow Level 4000' (Easterly Flow *) |
Washington Pass | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level 4000' |
Tuesday Night |
Freezing Level 500' |
Wednesday Morning |
Freezing Level 3000' |
Wednesday Afternoon |
Freezing Level 5500' |
Wednesday Night |
Snow Level 3000' (Easterly Flow *) |
Leavenworth | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level ' |
Tuesday Night |
Freezing Level ' |
Wednesday Morning |
Freezing Level ' |
Wednesday Afternoon |
Freezing Level ' |
Wednesday Night |
Snow Level ' (Easterly Flow *) |
Stevens Pass | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level ' |
Tuesday Night |
Freezing Level ' |
Wednesday Morning |
Freezing Level ' |
Wednesday Afternoon |
Freezing Level ' |
Wednesday Night |
Snow Level ' (Easterly Flow *) |
Snoqualmie Pass | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level 4000' |
Tuesday Night |
Freezing Level 2000' |
Wednesday Morning |
Freezing Level 4000' |
Wednesday Afternoon |
Freezing Level 6500' |
Wednesday Night |
Snow Level 4000' (Easterly Flow *) |
Mt. Rainier & Crystal | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level ' |
Tuesday Night |
Freezing Level ' |
Wednesday Morning |
Freezing Level ' |
Wednesday Afternoon |
Freezing Level ' |
Wednesday Night |
Snow Level ' (Easterly Flow *) |
Mt. Hood | Elevation |
---|---|
Tuesday Afternoon |
Freezing Level 5000' |
Tuesday Night |
Freezing Level 4500' |
Wednesday Morning |
Freezing Level 6000' |
Wednesday Afternoon |
Freezing Level 8000' |
Wednesday Night |
Snow Level 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.
Precipitation Forecast
Friday | Friday | |
---|---|---|
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 0.25 |
Mission Ridge | LT 0.10 | LT 0.10 |
Crystal Mt | LT 0.10 | LT 0.10 |
Paradise | LT 0.10 | LT 0.25 |
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: 2:58 PM PST Tuesday, March 6, 2018
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Tuesday Afternoon | VAR 0 - 10 | VAR 0 - 10 | E 0 - 10 | --- - | E 0 - 10 |
Tuesday Night | E 0 - 10 | S 0 - 10 | E 5 - 15 | --- - | SE 0 - 10 |
Wednesday Morning | SE 0 - 10 | SE 0 - 10 | E 5 - 15 | --- - | SE 5 - 15 |
Wednesday Afternoon | S 0 - 10 | SE 0 - 10 | SE 5 - 15 | --- - | SE 5 - 15 |
Wednesday Night | S 10 - 20 | SE 5 - 15 | SE 5 - 15 | --- - | SW 5 - 15 |
Hurricane Ridge | Elevation |
---|---|
Tuesday Afternoon | VAR 0 - 10 |
Tuesday Night | E 0 - 10 |
Wednesday Morning | SE 0 - 10 |
Wednesday Afternoon | S 0 - 10 |
Wednesday Night | S 10 - 20 |
Mt. Baker | Elevation |
---|---|
Tuesday Afternoon | VAR 0 - 10 |
Tuesday Night | S 0 - 10 |
Wednesday Morning | SE 0 - 10 |
Wednesday Afternoon | SE 0 - 10 |
Wednesday Night | SE 5 - 15 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Tuesday Afternoon | E 0 - 10 |
Tuesday Night | E 5 - 15 |
Wednesday Morning | E 5 - 15 |
Wednesday Afternoon | SE 5 - 15 |
Wednesday Night | SE 5 - 15 |
Mt. Rainier | Elevation |
---|---|
Tuesday Afternoon | --- - |
Tuesday Night | --- - |
Wednesday Morning | --- - |
Wednesday Afternoon | --- - |
Wednesday Night | --- - |
Mt. Hood | Elevation |
---|---|
Tuesday Afternoon | E 0 - 10 |
Tuesday Night | SE 0 - 10 |
Wednesday Morning | SE 5 - 15 |
Wednesday Afternoon | SE 5 - 15 |
Wednesday Night | SW 5 - 15 |
Hurricane Ridge | Direction - Speed |
---|---|
Tuesday Afternoon | VAR 0 - 10 |
Tuesday Night | E 0 - 10 |
Wednesday Morning | SE 0 - 10 |
Wednesday Afternoon | S 0 - 10 |
Wednesday Night | S 10 - 20 |
Mt. Baker | Direction - Speed |
---|---|
Tuesday Afternoon | VAR 0 - 10 |
Tuesday Night | S 0 - 10 |
Wednesday Morning | SE 0 - 10 |
Wednesday Afternoon | SE 0 - 10 |
Wednesday Night | SE 5 - 15 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Tuesday Afternoon | E 0 - 10 |
Tuesday Night | E 5 - 15 |
Wednesday Morning | E 5 - 15 |
Wednesday Afternoon | SE 5 - 15 |
Wednesday Night | SE 5 - 15 |
Mt. Rainier | Direction - Speed |
---|---|
Tuesday Afternoon | --- - |
Tuesday Night | --- - |
Wednesday Morning | --- - |
Wednesday Afternoon | --- - |
Wednesday Night | --- - |
Mt. Hood | Direction - Speed |
---|---|
Tuesday Afternoon | E 0 - 10 |
Tuesday Night | SE 0 - 10 |
Wednesday Morning | SE 5 - 15 |
Wednesday Afternoon | SE 5 - 15 |
Wednesday 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 | |
---|---|---|---|---|---|
Tuesday Afternoon | W 10 - 20 | WSW 5 - 15 | W 10 - 20 | --- - | SW 10 - 20 |
Tuesday Night | SW 10 - 20 | SW 10 - 20 | SW 10 - 20 | --- - | SW 15 - 25 |
Wednesday Morning | SW 10 - 20 | SW 10 - 20 | SW 15 - 25 | --- - | SW 10 - 20 |
Wednesday Afternoon | SW 15 - 25 | SW 15 - 25 | SW 15 - 25 | --- - | SSW 15 - 25 |
Wednesday Night | SW 15 - 25 | SW 15 - 25 | SW 25 - 35 | --- - | SW 25 - 35 |
Mt. Baker | Direction - Speed |
---|---|
Tuesday Afternoon | W 10 - 20 |
Tuesday Night | SW 10 - 20 |
Wednesday Morning | SW 10 - 20 |
Wednesday Afternoon | SW 15 - 25 |
Wednesday Night | SW 15 - 25 |
Washington Pass | Direction - Speed |
---|---|
Tuesday Afternoon | WSW 5 - 15 |
Tuesday Night | SW 10 - 20 |
Wednesday Morning | SW 10 - 20 |
Wednesday Afternoon | SW 15 - 25 |
Wednesday Night | SW 15 - 25 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Tuesday Afternoon | W 10 - 20 |
Tuesday Night | SW 10 - 20 |
Wednesday Morning | SW 15 - 25 |
Wednesday Afternoon | SW 15 - 25 |
Wednesday Night | SW 25 - 35 |
Mt. Rainier | Direction - Speed |
---|---|
Tuesday Afternoon | --- - |
Tuesday Night | --- - |
Wednesday Morning | --- - |
Wednesday Afternoon | --- - |
Wednesday Night | --- - |
Mt. Hood | Direction - Speed |
---|---|
Tuesday Afternoon | SW 10 - 20 |
Tuesday Night | SW 15 - 25 |
Wednesday Morning | SW 10 - 20 |
Wednesday Afternoon | SSW 15 - 25 |
Wednesday Night | SW 25 - 35 |
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: 2:58 PM PST Tuesday, March 6, 2018
Extended Weather Synopsis for Friday night through Friday
The weather pattern will quickly turn more active beginning Thursday as the upper level ridge over the area on Wednesday shifts inland. The aforementioned low pressure system will track towards the NW tip of the Olympic Peninsula on Thursday, passing into southern British Columbia Thursday evening. This system should pack a good punch of precipitation and winds as it traverses the area. With the current track, SW flow will keep snow levels in 4000-4500 range over much of the area Thursday and Thursday evening. It remains to be seen how much if any effect easterly flow has on precipitation type in the Passes this late in the year. Winds will peak Thursday afternoon and evening. Behind the front a slow cooling trend should ensue Thursday night with much colder air moving Friday. Significant post-frontal shower activity will wane Friday afternoon as upper level ridging begins to build over the area. Saturday looks mostly dry, but forecast models disagree if an embedded shortwave in southerly flow will bring some cloud cover.
Extended Weather
Olympics, Washington Cascades and Mt. Hood Area
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Thursday | Snow Level | 3500' - 4500' | 4000' - 4500' | 4000' - 5000' | * |
Thursday Night | Snow Level | 3500' - 4500' | 3500' - 4500' | 4500' - 5500' | |
Friday | Snow Level | 2000' - 3000' | 2000' - 3000' | 3000' - 4000' | |
Friday Night | Snow Level | 1500' - 2500' | 1500' - 2500' | 3000' - 4000' | |
Saturday | Freezing Level | 3500' - 4500' | 3500' - 4500' | 4500' - 5500' |
Mt. Baker | Elevation |
---|---|
Thursday |
Snow Level 3500' - 4500' (Easterly Flow *) |
Thursday Night |
Snow Level 3500' - 4500' |
Friday |
Snow Level 2000' - 3000' |
Friday Night |
Snow Level 1500' - 2500' |
Saturday |
Freezing Level 3500' - 4500' |
Snoqualmie Pass | Elevation |
---|---|
Thursday |
Snow Level 4000' - 4500' (Easterly Flow *) |
Thursday Night |
Snow Level 3500' - 4500' |
Friday |
Snow Level 2000' - 3000' |
Friday Night |
Snow Level 1500' - 2500' |
Saturday |
Freezing Level 3500' - 4500' |
Mt. Hood | Elevation |
---|---|
Thursday |
Snow Level 4000' - 5000' (Easterly Flow *) |
Thursday Night |
Snow Level 4500' - 5500' |
Friday |
Snow Level 3000' - 4000' |
Friday Night |
Snow Level 3000' - 4000' |
Saturday |
Freezing Level 4500' - 5500' |
* 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 Mar 6, 2018
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