Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Thursday
An upper level ridge will provide more dry day before a frontal system arrives late tonight. High clouds will affect many the Olympics and periodically the northwest Cascades as the system inches closer. Winds are a bit stronger than expected this morning again for the Olympics and northwest Cascades, and will increase further this afternoon. Easterly flow through the Cascade Passes will set up temperature inversions, with the warmest and above freezing air likely to be found above 5000'. There will also be a stiff E-SE breeze for most of the day. Colder air will stay lodged in place for the east slopes of the Cascades with little warming expected.
The frontal system now looks like it should pass through the Cascades around 5- 6 am on Monday morning. Snow levels will quickly drop with the onset of precipitation to 3000 ft or lower across the region. The front will bring a moderate shot of snow to the region with post-frontal snow showers helping to accumulate 6-10" across the west slopes of the Cascades, Mt. Hood and the Olympics and lower amounts along the east slopes of the Cascades through Monday afternoon. The bigger story will likely be the wind, both ahead of the front with strong to extreme southerlies for Hurricane Ridge and Mt Baker and behind the front with similar strength westerlies for most areas.
Weather Forecast
Hurricane Ridge
Sunday | Partly to mostly cloudy. Winds increasing in the afternoon. |
Mt. Baker
Sunday | Partly sunny with periods of high clouds. Winds increasing in the afternoon. |
Washington Pass and Leavenworth
Sunday | Partly to mostly sunny with periods of high clouds, cloudier near the Canadian border. |
Stevens and Snoqualmie Pass
Sunday | Mostly sunny with areas of morning fog. Moderate east winds through the Passes. Temperature inversions with warmest temps above 5000'. |
Mt. Rainier, Crystal and White Pass
Sunday | Mostly sunny. |
Mt. Hood
Sunday | Mostly sunny. |
Issued: 7:12 AM PST Sunday, November 29, 2020
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Sunday Morning | Freezing Level * | 7500' | 6000' | 2500' | 2500' | 3500' | 5500' | 7500' | 8000' |
Sunday Afternoon | Freezing Level * | 7000' | 6500' | 3500' | 4000' | 5500' | 7000' | 8000' | 8500' |
Sunday Evening | Freezing Level * | 6000' | 5500' | 3500' | 3500' | 4000' | 5500' | 6500' | 6500' |
Sunday Night | Snow Level * | 4500' | 3000' | 2000' | 2500' | 2500' | 3000' | 3500' | 4000' |
Monday Morning | Snow Level | 3000' | 2500' | 2000' | 2000' | 2500' | 2500' | 3000' | 3000' |
Monday Afternoon | Snow Level | 2000' | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 2500' |
Hurricane Ridge | Elevation |
---|---|
Sunday Morning |
Freezing Level 7500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
Sunday Evening |
Freezing Level 6000' (Easterly Flow *) |
Sunday Night |
Snow Level 4500' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' |
Monday Afternoon |
Snow Level 2000' |
Mt. Baker | Elevation |
---|---|
Sunday Morning |
Freezing Level 6000' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
Sunday Evening |
Freezing Level 5500' (Easterly Flow *) |
Sunday Night |
Snow Level 3000' (Easterly Flow *) |
Monday Morning |
Snow Level 2500' |
Monday Afternoon |
Snow Level 2000' |
Washington Pass | Elevation |
---|---|
Sunday Morning |
Freezing Level 2500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 3500' (Easterly Flow *) |
Sunday Evening |
Freezing Level 3500' (Easterly Flow *) |
Sunday Night |
Snow Level 2000' (Easterly Flow *) |
Monday Morning |
Snow Level 2000' |
Monday Afternoon |
Snow Level 1500' |
Leavenworth | Elevation |
---|---|
Sunday Morning |
Freezing Level 2500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
Sunday Evening |
Freezing Level 3500' (Easterly Flow *) |
Sunday Night |
Snow Level 2500' (Easterly Flow *) |
Monday Morning |
Snow Level 2000' |
Monday Afternoon |
Snow Level 1500' |
Stevens Pass | Elevation |
---|---|
Sunday Morning |
Freezing Level 3500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
Sunday Evening |
Freezing Level 4000' (Easterly Flow *) |
Sunday Night |
Snow Level 2500' (Easterly Flow *) |
Monday Morning |
Snow Level 2500' |
Monday Afternoon |
Snow Level 2000' |
Snoqualmie Pass | Elevation |
---|---|
Sunday Morning |
Freezing Level 5500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
Sunday Evening |
Freezing Level 5500' (Easterly Flow *) |
Sunday Night |
Snow Level 3000' (Easterly Flow *) |
Monday Morning |
Snow Level 2500' |
Monday Afternoon |
Snow Level 2000' |
Mt. Rainier & Crystal | Elevation |
---|---|
Sunday Morning |
Freezing Level 7500' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
Sunday Evening |
Freezing Level 6500' (Easterly Flow *) |
Sunday Night |
Snow Level 3500' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' |
Monday Afternoon |
Snow Level 2000' |
Mt. Hood | Elevation |
---|---|
Sunday Morning |
Freezing Level 8000' (Easterly Flow *) |
Sunday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
Sunday Evening |
Freezing Level 6500' (Easterly Flow *) |
Sunday Night |
Snow Level 4000' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' |
Monday Afternoon |
Snow Level 2500' |
* 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 Night | Thursday | |
---|---|---|---|
4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
Hurricane Ridge | 0 | 0.25 - 0.50 | LT 0.25 |
Mt Baker Ski Area | 0 | 0.25 - 0.50 | 0.50 - 0.75 |
Washington Pass | 0 | LT 0.10 | 0.25 - 0.50 |
Leavenworth | 0 | 0 | LT 0.25 |
Stevens Pass | 0 | LT 0.10 | 0.50 - 0.75 |
Snoqualmie Pass | 0 | LT 0.25 | 0.50 - 0.75 |
Mission Ridge | 0 | 0 | LT 0.25 |
Crystal Mt | 0 | LT 0.25 | 0.50 |
Paradise | 0 | 0.25 - 0.50 | 0.75 |
White Pass | 0 | LT 0.10 | 0.50 - 0.75 |
Mt Hood Meadows | 0 | LT 0.10 | 0.75 -1.00 |
Timberline | 0 | LT 0.10 | 0.75 -1.00 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | 0.25 - 0.50 |
Thursday | LT 0.25 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | 0.25 - 0.50 |
Thursday | 0.50 - 0.75 |
Washington Pass | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.10 |
Thursday | 0.25 - 0.50 |
Leavenworth | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | 0 |
Thursday | LT 0.25 |
Stevens Pass | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.10 |
Thursday | 0.50 - 0.75 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.25 |
Thursday | 0.50 - 0.75 |
Mission Ridge | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | 0 |
Thursday | LT 0.25 |
Crystal Mt | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.25 |
Thursday | 0.50 |
Paradise | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | 0.25 - 0.50 |
Thursday | 0.75 |
White Pass | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.10 |
Thursday | 0.50 - 0.75 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.10 |
Thursday | 0.75 -1.00 |
Timberline | Precipitation Forecast |
---|---|
Sunday | 0 |
Sunday Night | LT 0.10 |
Thursday | 0.75 -1.00 |
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: 7:12 AM PST Sunday, November 29, 2020
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Sunday Morning | S 10 - 20 | S 10 - 20 | ESE 10 - 20 | S 5 - 15 | SE 5 - 15 |
Sunday Afternoon | S 15 - 25 | S 15 - 25 | ESE 10 - 20 | S 5 - 15 | S 5 - 15 |
Sunday Evening | S 20 - 30 | S 20 - 30 | ESE 15 - 25 | S 10 - 20 | S 5 - 15 |
Sunday Night | S 35 - 50 | S 35 - 50 | SE 15 - 25 | S 20 - 30 | SW 20 - 30 |
Monday Morning | WSW 30 - 40 | WSW 25 - 35 | WSW 30 - 40 | WSW 30 - 40 | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 | W 15 - 25 | W 25 - 35 | W 20 - 30 | W 25 - 35 |
Hurricane Ridge | Elevation |
---|---|
Sunday Morning | S 10 - 20 |
Sunday Afternoon | S 15 - 25 |
Sunday Evening | S 20 - 30 |
Sunday Night | S 35 - 50 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 |
Mt. Baker | Elevation |
---|---|
Sunday Morning | S 10 - 20 |
Sunday Afternoon | S 15 - 25 |
Sunday Evening | S 20 - 30 |
Sunday Night | S 35 - 50 |
Monday Morning | WSW 25 - 35 |
Monday Afternoon | W 15 - 25 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Sunday Morning | ESE 10 - 20 |
Sunday Afternoon | ESE 10 - 20 |
Sunday Evening | ESE 15 - 25 |
Sunday Night | SE 15 - 25 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 |
Mt. Rainier | Elevation |
---|---|
Sunday Morning | S 5 - 15 |
Sunday Afternoon | S 5 - 15 |
Sunday Evening | S 10 - 20 |
Sunday Night | S 20 - 30 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 20 - 30 |
Mt. Hood | Elevation |
---|---|
Sunday Morning | SE 5 - 15 |
Sunday Afternoon | S 5 - 15 |
Sunday Evening | S 5 - 15 |
Sunday Night | SW 20 - 30 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 |
Hurricane Ridge | Direction - Speed |
---|---|
Sunday Morning | S 10 - 20 |
Sunday Afternoon | S 15 - 25 |
Sunday Evening | S 20 - 30 |
Sunday Night | S 35 - 50 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 |
Mt. Baker | Direction - Speed |
---|---|
Sunday Morning | S 10 - 20 |
Sunday Afternoon | S 15 - 25 |
Sunday Evening | S 20 - 30 |
Sunday Night | S 35 - 50 |
Monday Morning | WSW 25 - 35 |
Monday Afternoon | W 15 - 25 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Sunday Morning | ESE 10 - 20 |
Sunday Afternoon | ESE 10 - 20 |
Sunday Evening | ESE 15 - 25 |
Sunday Night | SE 15 - 25 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 25 - 35 |
Mt. Rainier | Direction - Speed |
---|---|
Sunday Morning | S 5 - 15 |
Sunday Afternoon | S 5 - 15 |
Sunday Evening | S 10 - 20 |
Sunday Night | S 20 - 30 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 20 - 30 |
Mt. Hood | Direction - Speed |
---|---|
Sunday Morning | SE 5 - 15 |
Sunday Afternoon | S 5 - 15 |
Sunday Evening | S 5 - 15 |
Sunday Night | SW 20 - 30 |
Monday Morning | WSW 30 - 40 |
Monday Afternoon | W 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.
Free Winds at 9000' (mph)
Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Sunday Morning | SW 20 - 30 | SW 20 - 30 | SW 15 - 25 | SW 15 - 25 | S 10 - 20 |
Sunday Afternoon | SW 30 - 40 | SW 30 - 40 | SW 15 - 25 | SW 15 - 25 | SW 15 - 25 |
Sunday Evening | SW 35 - 45 | SW 25 - 35 | SW 20 - 30 | SW 20 - 30 | SW 20 - 30 |
Sunday Night | SSW 50 - 60 | SW 30 - 40 | SW 40 - 60 | SW 40 - 60 | SW 45 - 60 |
Monday Morning | SW 30 - 40 | SW 35 - 45 | WSW 50 - 60 | W 50 - 60 | W 55 - 65 |
Monday Afternoon | W 30 - 40 | W 40 - 50 | WNW 40 - 50 | WNW 40 - 50 | WNW 50 - 60 |
Mt. Baker | Direction - Speed |
---|---|
Sunday Morning | SW 20 - 30 |
Sunday Afternoon | SW 30 - 40 |
Sunday Evening | SW 35 - 45 |
Sunday Night | SSW 50 - 60 |
Monday Morning | SW 30 - 40 |
Monday Afternoon | W 30 - 40 |
Washington Pass | Direction - Speed |
---|---|
Sunday Morning | SW 20 - 30 |
Sunday Afternoon | SW 30 - 40 |
Sunday Evening | SW 25 - 35 |
Sunday Night | SW 30 - 40 |
Monday Morning | SW 35 - 45 |
Monday Afternoon | W 40 - 50 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Sunday Morning | SW 15 - 25 |
Sunday Afternoon | SW 15 - 25 |
Sunday Evening | SW 20 - 30 |
Sunday Night | SW 40 - 60 |
Monday Morning | WSW 50 - 60 |
Monday Afternoon | WNW 40 - 50 |
Mt. Rainier | Direction - Speed |
---|---|
Sunday Morning | SW 15 - 25 |
Sunday Afternoon | SW 15 - 25 |
Sunday Evening | SW 20 - 30 |
Sunday Night | SW 40 - 60 |
Monday Morning | W 50 - 60 |
Monday Afternoon | WNW 40 - 50 |
Mt. Hood | Direction - Speed |
---|---|
Sunday Morning | S 10 - 20 |
Sunday Afternoon | SW 15 - 25 |
Sunday Evening | SW 20 - 30 |
Sunday Night | SW 45 - 60 |
Monday Morning | W 55 - 65 |
Monday Afternoon | WNW 50 - 60 |
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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Nov 28, 2020
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