Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Monday & Wednesday
Happy New Year! We have a quiet weather pattern to ring in 2018 with upper ridging offshore and light to moderate offshore flow at the surface. Freezing levels will be mild over the short term period with cooler temperatures seen along the east slopes of the Cascades and in the Cascades Passes. A strong inversion Monday afternoon has temperatures in the teens at the base of Stevens Pass while temperatures at the top of the ski area are near 40.
A weak front dissipating over Vancouver Island should bring some periods of high clouds today. Low clouds should hang tough along the east slopes of the Cascades and lower slopes of the Cascade Passes throughout the short term. A weak upper level disturbance cutting through the upper level ridge on Tuesday will not bring any precipitation but will produce some high/mid level cloudiness over the region.
Weather Forecast
Olympics
| Monday | Mostly sunny and mild with periods of high clouds. |
| Monday Night | Partly cloudy and mild with periods of high clouds. |
| Tuesday | Mostly cloudy. Mild. |
| Tuesday Night | Mostly cloudy. Mild. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Monday | Mostly sunny with periods of high clouds west of the crest. Lower clouds and cooler temperatures Cascade Passes. |
| Monday Night | Partly cloudy with periods of high clouds west of the crest. Lower clouds and cooler temperatures Cascade Passes. |
| Tuesday | Mostly cloudy. Cooler and cloudier Cascade Passes. |
| Tuesday Night | Mostly cloudy. Cooler and cloudier Cascade Passes. |
East Slopes of the Washington Cascades
| Monday | Partly sunny with periods of high clouds, low clouds lower slopes. |
| Monday Night | Partly cloudy with periods of high clouds, low clouds lower slopes. |
| Tuesday | Mostly cloudy. Cooler and cloudier lower slopes. |
| Tuesday Night | Mostly cloudy. Cooler and cloudier lower slopes. |
Mt. Hood
| Monday | Partly sunny with periods of high clouds. |
| Monday Night | Partly cloudy with periods of high clouds. Cooler and cloudier lower elevations exposed to easterly flow. |
| Tuesday | Mostly cloudy. Cooler and cloudier lower elevations exposed to easterly flow. |
| Tuesday Night | Mostly cloudy. |
Issued: 2:34 PM PST Monday, January 1, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Afternoon | Freezing Level * | 9000' | 8000' | 5000' | ' | ' | 8000' | ' | 10000' |
| Monday Night | Freezing Level * | 9500' | 8000' | 3000' | ' | ' | 8500' | ' | 10000' |
| Tuesday | Freezing Level * | 9500' | 8500' | 7500' | ' | ' | 9000' | ' | 10500' |
| Tuesday Night | Freezing Level * | 9500' | 8500' | 7500' | ' | ' | 9000' | ' | 10500' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Night |
Freezing Level 9500' (Easterly Flow *) |
| Tuesday |
Freezing Level 9500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Monday Night |
Freezing Level 8000' (Easterly Flow *) |
| Tuesday |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Monday Night |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday |
Freezing Level 7500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 7500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Tuesday |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Tuesday |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Monday Night |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday |
Freezing Level 9000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Tuesday |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Monday Night |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 10500' (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
| Wednesday | Wednesday | |
|---|---|---|
| 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: 2:34 PM PST Monday, January 1, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Afternoon | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | --- - | E 0 - 10 |
| Monday Night | SE 0 - 10 | ESE 0 - 10 | E 0 - 10 | --- - | ESE 0 - 10 |
| Tuesday | S 0 - 10 | ENE 0 - 10 | ESE 10 - 20 | --- - | ESE 10 - 20 |
| Tuesday Night | SE 0 - 10 | VAR 0 - 10 | E 0 - 10 | --- - | ESE 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | SE 0 - 10 |
| Tuesday | S 0 - 10 |
| Tuesday Night | SE 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | ESE 0 - 10 |
| Tuesday | ENE 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | E 0 - 10 |
| Tuesday | ESE 10 - 20 |
| Tuesday Night | E 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Afternoon | E 0 - 10 |
| Monday Night | ESE 0 - 10 |
| Tuesday | ESE 10 - 20 |
| Tuesday Night | ESE 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | SE 0 - 10 |
| Tuesday | S 0 - 10 |
| Tuesday Night | SE 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | ESE 0 - 10 |
| Tuesday | ENE 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon | VAR 0 - 10 |
| Monday Night | E 0 - 10 |
| Tuesday | ESE 10 - 20 |
| Tuesday Night | E 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon | E 0 - 10 |
| Monday Night | ESE 0 - 10 |
| Tuesday | ESE 10 - 20 |
| Tuesday Night | ESE 0 - 10 |
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 | |
|---|---|---|---|---|---|
| Monday Afternoon | NW 10 - 20 | NW 5 - 15 | NW 10 - 20 | --- - | NW 5 - 15 |
| Monday Night | SW 0 - 10 | SW 0 - 10 | SW 0 - 10 | --- - | SW 5 - 15 |
| Tuesday Afternoon | SW 5 - 15 | SW 5 - 15 | SW 10 - 20 | --- - | SW 10 - 20 |
| Tuesday Night | W 0 - 10 | W 0 - 10 | WSW 10 - 20 | --- - | SW 10 - 20 |
| Tuesday Morning | SW 0 - 10 | S 5 - 15 | S 0 - 10 | --- - | S 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Afternoon | NW 10 - 20 |
| Monday Night | SW 0 - 10 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | W 0 - 10 |
| Tuesday Morning | SW 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Afternoon | NW 5 - 15 |
| Monday Night | SW 0 - 10 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | W 0 - 10 |
| Tuesday Morning | S 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Afternoon | NW 10 - 20 |
| Monday Night | SW 0 - 10 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night | WSW 10 - 20 |
| Tuesday Morning | S 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Tuesday Morning | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Afternoon | NW 5 - 15 |
| Monday Night | SW 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night | SW 10 - 20 |
| Tuesday Morning | S 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: 2:34 PM PST Monday, January 1, 2018
Extended Weather Synopsis for Wednesday night through Wednesday
The upper level ridge will shift inland on Wednesday. Freezing levels will continue to be on the mild side but a fair amount of cloud cover will once again sneak under the ridge from a cut-off low off the California coast. That upper low will weaken and eject northward over our area on Thursday. There's a slight chance of showers reaching the Olympics or Mt. Hood by the afternoon, but most areas will likely just see an increase in cloud cover as the day progresses. An upper low complex will meander closer to the Washington/Oregon coast on Friday, increasing the likelihood of showers. Forecast models are not in good agreement on timing or intensity for Friday's system. Snow levels will lower slightly toward the end of the work week.
Extended Weather
Olympics, Washington Cascades and Mt. Hood Area
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday | Freezing Level | 8000' - 9000' | 8500' - 9500' | 9500' - 10500' | * |
| Wednesday Night | Freezing Level | 8000' - 9000' | 8500' - 9500' | 8500' - 9500' | * |
| Thursday | Freezing Level | 7500' - 8500' | 7500' - 8500' | 7500' - 8500' | * |
| Thursday Night | Snow Level | 6000' - 7000' | 5500' - 6500' | 6500' - 7500' | * |
| Friday | Snow Level | 4000' - 5000' | 4500' - 5500' | 4500' - 5500' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday |
Freezing Level 8000' - 9000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8000' - 9000' (Easterly Flow *) |
| Thursday |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Thursday Night |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Friday |
Snow Level 4000' - 5000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday |
Freezing Level 8500' - 9500' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8500' - 9500' (Easterly Flow *) |
| Thursday |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Thursday Night |
Snow Level 5500' - 6500' (Easterly Flow *) |
| Friday |
Snow Level 4500' - 5500' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday |
Freezing Level 9500' - 10500' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8500' - 9500' (Easterly Flow *) |
| Thursday |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Thursday Night |
Snow Level 6500' - 7500' (Easterly Flow *) |
| Friday |
Snow 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 Jan 1, 2018
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