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 night through Thursday
A stacked low pressure system spinning well off the Oregon coast will lift warm frontal moisture into southern British Columbia later tonight and through the day on Friday. The main effect on our region on Friday will be a steady supply of high clouds, but the Olympics and Mt. Baker region may see periods of very light rain.
The main frontal band will push inland from the coast Friday night but weaken as it pushes through the Cascades Saturday morning. Precipitation will be on the lighter side with this system and overall snow levels will be slow to cool.
Shower activity will continue on Saturday, favoring the west slopes of the Cascades and Mt. Hood. The merging of the old frontal boundary and a new shortwave approaching the area from the NW continues to be handled poorly by the forecast models, but it's unlikely we'll see a significant precipitation event as snow levels stick in the 4000-6000 ft range.
Weather Forecast
Hurricane Ridge
Thursday Night | Mostly cloudy. |
Friday | Cloudy. Periods of light rain. |
Mt. Baker
Thursday Night | Mostly cloudy with a chance of showers. |
Friday | Cloudy. Periods of light rain. |
Washington Pass and Leavenworth
Thursday Night | Partly to mostly cloudy. |
Friday | Mostly cloudy with filtered sunshine through high clouds. |
Stevens and Snoqualmie Pass
Thursday Night | Cloudy. Light east winds at Pass level. |
Friday | Cloudy. Light east winds at Pass level. |
Mt. Rainier, Crystal and White Pass
Thursday Night | Partly to mostly cloudy. |
Friday | Mostly cloudy with filtered sunshine through high clouds. |
Mt. Hood
Thursday Night | Partly to mostly cloudy. |
Friday | Partly to mostly cloudy with filtered sunshine through high clouds. |
Issued: 1:50 PM PST Thursday, December 5, 2019
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Thursday Evening | Freezing Level * | 6500' | 6000' | 5500' | 5500' | 6000' | 6500' | 6500' | 7500' |
Thursday Night | Freezing Level * | 7000' | 6000' | 5500' | 6000' | 6000' | 6500' | 7000' | 8500' |
Friday Morning | Freezing Level * | 7000' | 6500' | 5000' | 6000' | 6000' | 7000' | 7500' | 8000' |
Friday Afternoon | Freezing Level * | 6500' | 7000' | 5000' | 5500' | 6000' | 7000' | 7000' | 7500' |
Friday Evening | Snow Level * | 5000' | 5500' | 4500' | 4000' | 4000' | 4000' | 6000' | 6500' |
Friday Night | Snow Level * | 5500' | 5500' | 4000' | 4000' | 4500' | 4500' | 5500' | 6000' |
Saturday Morning | Snow Level | 5000' | 5000' | 4000' | 4000' | 4500' | 5000' | 5500' | 6000' |
Saturday Afternoon | Snow Level | 5000' | 4500' | 4500' | 5000' | 5000' | 5000' | 5500' | 6000' |
Hurricane Ridge | Elevation |
---|---|
Thursday Evening |
Freezing Level 6500' (Easterly Flow *) |
Thursday Night |
Freezing Level 7000' (Easterly Flow *) |
Friday Morning |
Freezing Level 7000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
Friday Evening |
Snow Level 5000' (Easterly Flow *) |
Friday Night |
Snow Level 5500' (Easterly Flow *) |
Saturday Morning |
Snow Level 5000' |
Saturday Afternoon |
Snow Level 5000' |
Mt. Baker | Elevation |
---|---|
Thursday Evening |
Freezing Level 6000' (Easterly Flow *) |
Thursday Night |
Freezing Level 6000' (Easterly Flow *) |
Friday Morning |
Freezing Level 6500' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
Friday Evening |
Snow Level 5500' (Easterly Flow *) |
Friday Night |
Snow Level 5500' (Easterly Flow *) |
Saturday Morning |
Snow Level 5000' |
Saturday Afternoon |
Snow Level 4500' |
Washington Pass | Elevation |
---|---|
Thursday Evening |
Freezing Level 5500' (Easterly Flow *) |
Thursday Night |
Freezing Level 5500' (Easterly Flow *) |
Friday Morning |
Freezing Level 5000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
Friday Evening |
Snow Level 4500' (Easterly Flow *) |
Friday Night |
Snow Level 4000' (Easterly Flow *) |
Saturday Morning |
Snow Level 4000' |
Saturday Afternoon |
Snow Level 4500' |
Leavenworth | Elevation |
---|---|
Thursday Evening |
Freezing Level 5500' (Easterly Flow *) |
Thursday Night |
Freezing Level 6000' (Easterly Flow *) |
Friday Morning |
Freezing Level 6000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
Friday Evening |
Snow Level 4000' (Easterly Flow *) |
Friday Night |
Snow Level 4000' (Easterly Flow *) |
Saturday Morning |
Snow Level 4000' |
Saturday Afternoon |
Snow Level 5000' |
Stevens Pass | Elevation |
---|---|
Thursday Evening |
Freezing Level 6000' (Easterly Flow *) |
Thursday Night |
Freezing Level 6000' (Easterly Flow *) |
Friday Morning |
Freezing Level 6000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
Friday Evening |
Snow Level 4000' (Easterly Flow *) |
Friday Night |
Snow Level 4500' (Easterly Flow *) |
Saturday Morning |
Snow Level 4500' |
Saturday Afternoon |
Snow Level 5000' |
Snoqualmie Pass | Elevation |
---|---|
Thursday Evening |
Freezing Level 6500' (Easterly Flow *) |
Thursday Night |
Freezing Level 6500' (Easterly Flow *) |
Friday Morning |
Freezing Level 7000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
Friday Evening |
Snow Level 4000' (Easterly Flow *) |
Friday Night |
Snow Level 4500' (Easterly Flow *) |
Saturday Morning |
Snow Level 5000' |
Saturday Afternoon |
Snow Level 5000' |
Mt. Rainier & Crystal | Elevation |
---|---|
Thursday Evening |
Freezing Level 6500' (Easterly Flow *) |
Thursday Night |
Freezing Level 7000' (Easterly Flow *) |
Friday Morning |
Freezing Level 7500' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
Friday Evening |
Snow Level 6000' (Easterly Flow *) |
Friday Night |
Snow Level 5500' (Easterly Flow *) |
Saturday Morning |
Snow Level 5500' |
Saturday Afternoon |
Snow Level 5500' |
Mt. Hood | Elevation |
---|---|
Thursday Evening |
Freezing Level 7500' (Easterly Flow *) |
Thursday Night |
Freezing Level 8500' (Easterly Flow *) |
Friday Morning |
Freezing Level 8000' (Easterly Flow *) |
Friday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
Friday Evening |
Snow Level 6500' (Easterly Flow *) |
Friday Night |
Snow Level 6000' (Easterly Flow *) |
Saturday Morning |
Snow Level 6000' |
Saturday Afternoon |
Snow Level 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.
Precipitation Forecast
Thursday Night | Thursday | Thursday Night | Thursday | |
---|---|---|---|---|
4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
Hurricane Ridge | 0 | LT 0.10 | LT 0.25 | LT 0.10 |
Mt Baker Ski Area | 0 | LT 0.10 | 0.25 - 0.50 | 0.25 - 0.50 |
Washington Pass | 0 | 0 | LT 0.10 | LT 0.10 |
Leavenworth | 0 | 0 | LT 0.10 | 0 |
Stevens Pass | 0 | 0 | LT 0.10 | LT 0.25 |
Snoqualmie Pass | 0 | 0 | LT 0.25 | 0.25 |
Mission Ridge | 0 | 0 | LT 0.10 | LT 0.10 |
Crystal Mt | 0 | 0 | LT 0.25 | LT 0.10 |
Paradise | 0 | 0 | 0.25 - 0.50 | 0.25 |
White Pass | 0 | 0 | LT 0.25 | LT 0.25 |
Mt Hood Meadows | 0 | 0 | 0.25 | 0.25 - 0.50 |
Timberline | 0 | 0 | 0.25 | 0.25 - 0.50 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | LT 0.10 |
Thursday Night | LT 0.25 |
Thursday | LT 0.10 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | LT 0.10 |
Thursday Night | 0.25 - 0.50 |
Thursday | 0.25 - 0.50 |
Washington Pass | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Leavenworth | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.10 |
Thursday | 0 |
Stevens Pass | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.10 |
Thursday | LT 0.25 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.25 |
Thursday | 0.25 |
Mission Ridge | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Crystal Mt | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.25 |
Thursday | LT 0.10 |
Paradise | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | 0.25 - 0.50 |
Thursday | 0.25 |
White Pass | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | LT 0.25 |
Thursday | LT 0.25 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | 0.25 |
Thursday | 0.25 - 0.50 |
Timberline | Precipitation Forecast |
---|---|
Thursday Night | 0 |
Thursday | 0 |
Thursday Night | 0.25 |
Thursday | 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: 1:50 PM PST Thursday, December 5, 2019
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Thursday Evening | SW 10 - 20 | SW 10 - 20 | SW 5 - 15 | S 5 - 15 | S 10 - 20 |
Thursday Night | SW 5 - 15 | SW 0 - 10 | SE 0 - 10 | S 5 - 15 | S 15 - 25 |
Friday Morning | SW 10 - 20 | SW 5 - 15 | SE 0 - 10 | SW 0 - 10 | SW 5 - 15 |
Friday Afternoon | SW 15 - 25 | SSW 5 - 15 | SE 0 - 10 | SW 5 - 15 | S 10 - 20 |
Hurricane Ridge | Elevation |
---|---|
Thursday Evening | SW 10 - 20 |
Thursday Night | SW 5 - 15 |
Friday Morning | SW 10 - 20 |
Friday Afternoon | SW 15 - 25 |
Mt. Baker | Elevation |
---|---|
Thursday Evening | SW 10 - 20 |
Thursday Night | SW 0 - 10 |
Friday Morning | SW 5 - 15 |
Friday Afternoon | SSW 5 - 15 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Thursday Evening | SW 5 - 15 |
Thursday Night | SE 0 - 10 |
Friday Morning | SE 0 - 10 |
Friday Afternoon | SE 0 - 10 |
Mt. Rainier | Elevation |
---|---|
Thursday Evening | S 5 - 15 |
Thursday Night | S 5 - 15 |
Friday Morning | SW 0 - 10 |
Friday Afternoon | SW 5 - 15 |
Mt. Hood | Elevation |
---|---|
Thursday Evening | S 10 - 20 |
Thursday Night | S 15 - 25 |
Friday Morning | SW 5 - 15 |
Friday Afternoon | S 10 - 20 |
Hurricane Ridge | Direction - Speed |
---|---|
Thursday Evening | SW 10 - 20 |
Thursday Night | SW 5 - 15 |
Friday Morning | SW 10 - 20 |
Friday Afternoon | SW 15 - 25 |
Mt. Baker | Direction - Speed |
---|---|
Thursday Evening | SW 10 - 20 |
Thursday Night | SW 0 - 10 |
Friday Morning | SW 5 - 15 |
Friday Afternoon | SSW 5 - 15 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Thursday Evening | SW 5 - 15 |
Thursday Night | SE 0 - 10 |
Friday Morning | SE 0 - 10 |
Friday Afternoon | SE 0 - 10 |
Mt. Rainier | Direction - Speed |
---|---|
Thursday Evening | S 5 - 15 |
Thursday Night | S 5 - 15 |
Friday Morning | SW 0 - 10 |
Friday Afternoon | SW 5 - 15 |
Mt. Hood | Direction - Speed |
---|---|
Thursday Evening | S 10 - 20 |
Thursday Night | S 15 - 25 |
Friday Morning | SW 5 - 15 |
Friday Afternoon | 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.
Free Winds at 9000' (mph)
Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Thursday Evening | SW 20 - 30 | SW 10 - 20 | S 15 - 25 | S 15 - 25 | SW 25 - 35 |
Thursday Night | SW 15 - 25 | SW 10 - 20 | S 10 - 20 | SW 20 - 30 | SW 25 - 35 |
Friday Morning | SW 20 - 30 | SW 20 - 30 | SW 25 - 35 | SW 15 - 25 | SW 20 - 30 |
Friday Afternoon | WSW 10 - 20 | WSW 10 - 20 | WSW 15 - 25 | WSW 15 - 25 | WSW 15 - 25 |
Mt. Baker | Direction - Speed |
---|---|
Thursday Evening | SW 20 - 30 |
Thursday Night | SW 15 - 25 |
Friday Morning | SW 20 - 30 |
Friday Afternoon | WSW 10 - 20 |
Washington Pass | Direction - Speed |
---|---|
Thursday Evening | SW 10 - 20 |
Thursday Night | SW 10 - 20 |
Friday Morning | SW 20 - 30 |
Friday Afternoon | WSW 10 - 20 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Thursday Evening | S 15 - 25 |
Thursday Night | S 10 - 20 |
Friday Morning | SW 25 - 35 |
Friday Afternoon | WSW 15 - 25 |
Mt. Rainier | Direction - Speed |
---|---|
Thursday Evening | S 15 - 25 |
Thursday Night | SW 20 - 30 |
Friday Morning | SW 15 - 25 |
Friday Afternoon | WSW 15 - 25 |
Mt. Hood | Direction - Speed |
---|---|
Thursday Evening | SW 25 - 35 |
Thursday Night | SW 25 - 35 |
Friday Morning | SW 20 - 30 |
Friday Afternoon | WSW 15 - 25 |
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: 1:50 PM PST Thursday, December 5, 2019
Extended Weather Synopsis for Thursday night through Thursday
Showers should wane Saturday night and early Sunday as strong upper level ridging builds offshore. NW flow aloft and onshore flow at the surface will continue to keep clouds banked up along the west slopes of the Cascades with clearing conditions further east of the crest.
The ridge will move over the area on Monday with freezing levels on the rise. The next frontal system will weaken as it runs into the ridge on Tuesday, but will likely cause an increase in cloud cover.
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Saturday Night | Snow Level | 3500' - 4500' | 4000' - 5000' | 5000' - 6000' | |
Sunday | Snow Level | 3000' - 4000' | 3500' - 4500' | 4000' - 5000' | |
Sunday Night | Freezing Level | 2500' - 3500' | 3000' - 4000' | 3500' - 4500' | |
Monday | Freezing Level | 6500' - 7500' | 7000' - 8000' | 8500' - 9500' |
Mt. Baker | Elevation |
---|---|
Saturday Night |
Snow Level 3500' - 4500' |
Sunday |
Snow Level 3000' - 4000' |
Sunday Night |
Freezing Level 2500' - 3500' |
Monday |
Freezing Level 6500' - 7500' |
Snoqualmie Pass | Elevation |
---|---|
Saturday Night |
Snow Level 4000' - 5000' |
Sunday |
Snow Level 3500' - 4500' |
Sunday Night |
Freezing Level 3000' - 4000' |
Monday |
Freezing Level 7000' - 8000' |
Mt. Hood | Elevation |
---|---|
Saturday Night |
Snow Level 5000' - 6000' |
Sunday |
Snow Level 4000' - 5000' |
Sunday Night |
Freezing Level 3500' - 4500' |
Monday |
Freezing Level 8500' - 9500' |
* 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 Dec 4, 2019
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