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 & Thursday
A benign weather pattern is in store for the PNW through the short term. An upper level ridge offshore will lead to dry and mostly sunny weather today and Wednesday. Freezing levels should begin a slow climb today and continue through tomorrow except where easterly flow through the Cascade Passes later today and tonight should lead to slightly cooler temperatures.
A weak Pacific frontal system will approach Wednesday night causing an increase in clouds. Very light rain and snow is possible for the Olympics and north Cascades late Wednesday night.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Tuesday |
Partly cloudy with areas of low clouds and fog becoming mostly sunny in the afternoon. Gradual warming trend. |
| Tuesday Night |
Mostly clear. |
| Wednesday |
Mostly sunny becoming partly to mostly cloudy in the afternoon with increasing high clouds. Warming trend. Cooler in the Passes and in the valleys. |
| Wednesday Night |
Mostly cloudy, very light rain and snow developing north Cascades and Olympics late. |
East slopes of the Washington Cascades
| Tuesday |
Partly cloudy with areas of low clouds and fog becoming mostly sunny in the afternoon. |
| Tuesday Night |
Mostly clear. |
| Wednesday |
Mostly sunny becoming partly to mostly cloudy in the afternoon with increasing high clouds. Warming trend. |
| Wednesday Night |
Mostly cloudy, very light rain and snow developing northeast Cascades late. |
Mt. Hood Area
| Tuesday |
Partly cloudy becoming mostly sunny in the afternoon. Gradual warming trend. |
| Tuesday Night |
Mostly clear. |
| Wednesday |
Mostly sunny becoming partly cloudy in the afternoon with increasing high clouds. Warming trend. |
| Wednesday Night |
Becoming mostly cloudy overnight. |
Issued: 6:58 AM PST Tuesday, January 20, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Freezing Level * | 3500' | 2500' | 1500' | ' | ' | 3000' | ' | 4000' |
| Tuesday Afternoon | Freezing Level * | 5500' | 4500' | 3000' | ' | ' | 4500' | ' | 5000' |
| Tuesday Night - Wednesday Morning | Freezing Level * | 7000' | 6000' | 2500' | ' | ' | 5500' | ' | 5000' |
| Wednesday Afternoon - Wednesday Evening | Freezing Level * | 8000' | 7000' | 4000' | ' | ' | 7000' | ' | 9000' |
| Wednesday Night | Snow Level * | 6000' | 3000' | 2000' | ' | ' | 3000' | ' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 6000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level 4000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 2000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level ' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level ' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level ' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Night - Wednesday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Wednesday Afternoon - Wednesday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 5000' (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
| Thursday | Thursday | |
|---|---|---|
| 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 0.10 | 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: 6:58 AM PST Tuesday, January 20, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday | NE 0 - 10 | NE 0 - 10 | E 0 - 10 | --- - | E 5 - 15 |
| Tuesday Night | S 0 - 10 | S 0 - 10 | E 0 - 10 | --- - | SE 5 - 15 |
| Wednesday | SW 5 - 15 | SW 5 - 15 | SE 0 - 10 | --- - | SE 0 - 10 |
| Wednesday Night | SW 10 - 20 | SE 5 - 15 | SW 0 - 10 | --- - | SW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday | NE 0 - 10 |
| Tuesday Night | S 0 - 10 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday | NE 0 - 10 |
| Tuesday Night | S 0 - 10 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | SE 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday | SE 0 - 10 |
| Wednesday Night | SW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday | E 5 - 15 |
| Tuesday Night | SE 5 - 15 |
| Wednesday | SE 0 - 10 |
| Wednesday Night | SW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday | NE 0 - 10 |
| Tuesday Night | S 0 - 10 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday | NE 0 - 10 |
| Tuesday Night | S 0 - 10 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | SE 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday | SE 0 - 10 |
| Wednesday Night | SW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday | E 5 - 15 |
| Tuesday Night | SE 5 - 15 |
| Wednesday | SE 0 - 10 |
| 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 Morning | NW 15 - 25 | NW 5 - 15 | NW 10 - 20 | --- - | NW 5 - 15 |
| Tuesday Afternoon | NW 5 - 15 | NW 5 - 15 | N 0 - 10 | --- - | NE 0 - 10 |
| Tuesday Night | W 10 - 20 | W 10 - 20 | W 5 - 15 | --- - | W 5 - 15 |
| Wednesday | SW 10 - 20 | W 10 - 20 | SW 5 - 15 | --- - | SW 5 - 15 |
| Wednesday Night | W 15 - 25 | W 15 - 25 | W 15 - 25 | --- - | W 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | NW 15 - 25 |
| Tuesday Afternoon | NW 5 - 15 |
| Tuesday Night | W 10 - 20 |
| Wednesday | SW 10 - 20 |
| Wednesday Night | W 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | NW 5 - 15 |
| Tuesday Afternoon | NW 5 - 15 |
| Tuesday Night | W 10 - 20 |
| Wednesday | W 10 - 20 |
| Wednesday Night | W 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | NW 10 - 20 |
| Tuesday Afternoon | N 0 - 10 |
| Tuesday Night | W 5 - 15 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | W 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | NW 5 - 15 |
| Tuesday Afternoon | NE 0 - 10 |
| Tuesday Night | W 5 - 15 |
| Wednesday | SW 5 - 15 |
| Wednesday Night | W 10 - 20 |
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: 6:58 AM PST Tuesday, January 20, 2015
Extended Weather Synopsis for Thursday night through Thursday
The upper level ridge off the California Coast will strengthen over the weekend and eventually bring much warmer air into the region while deflecting heavier precipitation well to our north.
Before the happens, another weak system may move through the area on Friday at relatively mild snow levels and without significant precipitation. A stronger slug of moisture should affect the Olympics and north Cascades on Saturday before shifting north into British Columbia. Mt. Hood may see very little precipitation from this event on Saturday.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Thursday - FridayMostly cloudy with periods of light rain and snow. Slow warming trend.
Friday Night - SaturdayCloudy with light to moderate rain and snow, heaviest north Cascades and Olympics. Mild.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday | Snow Level | 4000' - 5000' | 5500' - 6500' | 6000' - 7000' | * |
| Thursday Night - Friday | Snow Level | 6000' - 7000' | 6500' - 7500' | 7000' - 8000' | * |
| Friday Night - Saturday | Snow Level | 7000' - 8000' | 8000' - 9000' | 9000' - 10000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Thursday Night - Friday |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Friday Night - Saturday |
Snow Level 7000' - 8000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday |
Snow Level 5500' - 6500' (Easterly Flow *) |
| Thursday Night - Friday |
Snow Level 6500' - 7500' (Easterly Flow *) |
| Friday Night - Saturday |
Snow Level 8000' - 9000' |
| Mt. Hood | Elevation |
|---|---|
| Thursday |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Thursday Night - Friday |
Snow Level 7000' - 8000' (Easterly Flow *) |
| Friday Night - Saturday |
Snow Level 9000' - 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 Jan 19, 2015
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.