Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Saturday night through Friday
The active weather pattern continues in the Pacific Northwest as several storms impact our region over the next several days. First up, Saturday night a well-developed winter storm will affect the mountains bringing rain/snow, strong winds, and a slight warming trend to most locations. The brunt of this system will be felt in southern Washington and northern Oregon as the jetstream focuses the firehose on the volcanoes in this area. As the associated fronts swing through overnight and early Sunday, all trailheads across our region should see an increase in rain and snow. Plenty of moisture, a favorable wind direction, and instability in the atmospheric will allow precipitation to spill over the Cascade crest and impact areas further east. This first system looks windy. Winds should turn westerly and increase, peaking in most locations late Saturday night or early Sunday morning. This could cause very difficult travel conditions at higher elevations and in exposed terrain.
Things appear to quite down Sunday evening as the low pressure associated with this storm shifts east into British Columbia. You're most likely to encounter a lingering shower near the volcanoes, major passes, and in locations close to the Canadian border. The brake in the action hangs around early Monday morning but quickly ends as the next storm bears down on the region.
Monday's storm system looks warm and wet, with much of the moisture streaming up from near Hawaii. Look for precipitation to spread from south to north as warm moist air pushes into the area. Snow levels will rise throughout the day with a marked increase in the afternoon as the warm front arrives. This warm weather will likely bring rain to near or above ridge rest in most areas. As the jet stream shifts north late Monday into Monday night, we should see a decrease in precipitation but the warm air stays in place.
Weather Forecast
Hurricane Ridge
Saturday Night | Light to moderate rain and snow showers, becoming more consistent in the pre-dawn hours. Moderate winds. |
Sunday | Light to moderate rain and snow in the morning becoming showery in the afternoon. Moderate to strong winds decreasing later in the day. |
Mt. Baker
Saturday Night | Snow overnight with slight warming. Moderate winds increasing in the pre-dawn hours. |
Sunday | Snow in the morning with continued warming. Becoming showery late in the day. Moderate to strong winds in the morning decreasing in the afternoon. |
Washington Pass and Leavenworth
Saturday Night | Snow showers overnight with moderate westerly winds |
Sunday | Rain and snow showers especially in the morning. Moderate to strong westerly ridgetop winds. |
Stevens and Snoqualmie Pass
Saturday Night | Rain and snow showers with a slight warming trend. Light east flow at pass level decreasing overnight and becoming westerly. Moderate ridgetop winds increasing. |
Sunday | Rain and snow at the Passes with fluctuating snow levels. Strong westerly ridgetop winds. |
Mt. Rainier, Crystal and White Pass
Saturday Night | Rain and snow with a slight warming trend. Very strong to extreme alpine winds increasing overnight. |
Sunday | Moderate rain and snow with fluctuating snow levels. Very strong alpine winds. |
Mt. Hood
Saturday Night | Moderate to heavy rain and snow with warming overnight. Winds increasing becoming strong as they turn westerly. |
Sunday | Rain and snow showers. Very strong alpine winds. Especially in the morning. |
Issued: 1:54 PM PST Saturday, November 14, 2020
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Saturday Evening | Snow Level * | 3000' | 2000' | 2000' | 2500' | 2500' | 2500' | 3000' | 4000' |
Saturday Night | Snow Level | 4000' | 2500' | 2000' | 2500' | 3500' | 3500' | 4000' | 5500' |
Sunday Morning | Snow Level | 3500' | 3000' | 3000' | 3500' | 4000' | 4000' | 4000' | 5000' |
Sunday Afternoon | Snow Level | 3500' | 3000' | 3000' | 3500' | 3500' | 3500' | 4000' | 4500' |
Sunday Evening | Snow Level * | 3000' | 2500' | 2500' | 3000' | 3500' | 3500' | 4000' | 4500' |
Sunday Night | Snow Level * | 3000' | 2000' | 2000' | 3000' | 3500' | 3500' | 3500' | 4500' |
Monday Morning | Snow Level * | 3000' | 2500' | 2500' | 3000' | 3000' | 3500' | 3000' | 7500' |
Monday Afternoon | Snow Level * | 5500' | 3500' | 3000' | 3000' | 3500' | 4500' | 6500' | 8000' |
Hurricane Ridge | Elevation |
---|---|
Saturday Evening |
Snow Level 3000' (Easterly Flow *) |
Saturday Night |
Snow Level 4000' |
Sunday Morning |
Snow Level 3500' |
Sunday Afternoon |
Snow Level 3500' |
Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
Sunday Night |
Snow Level 3000' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' (Easterly Flow *) |
Monday Afternoon |
Snow Level 5500' (Easterly Flow *) |
Mt. Baker | Elevation |
---|---|
Saturday Evening |
Snow Level 2000' (Easterly Flow *) |
Saturday Night |
Snow Level 2500' |
Sunday Morning |
Snow Level 3000' |
Sunday Afternoon |
Snow Level 3000' |
Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
Sunday Night |
Snow Level 2000' (Easterly Flow *) |
Monday Morning |
Snow Level 2500' (Easterly Flow *) |
Monday Afternoon |
Snow Level 3500' (Easterly Flow *) |
Washington Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 2000' (Easterly Flow *) |
Saturday Night |
Snow Level 2000' |
Sunday Morning |
Snow Level 3000' |
Sunday Afternoon |
Snow Level 3000' |
Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
Sunday Night |
Snow Level 2000' (Easterly Flow *) |
Monday Morning |
Snow Level 2500' (Easterly Flow *) |
Monday Afternoon |
Snow Level 3000' (Easterly Flow *) |
Leavenworth | Elevation |
---|---|
Saturday Evening |
Snow Level 2500' (Easterly Flow *) |
Saturday Night |
Snow Level 2500' |
Sunday Morning |
Snow Level 3500' |
Sunday Afternoon |
Snow Level 3500' |
Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
Sunday Night |
Snow Level 3000' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' (Easterly Flow *) |
Monday Afternoon |
Snow Level 3000' (Easterly Flow *) |
Stevens Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 2500' (Easterly Flow *) |
Saturday Night |
Snow Level 3500' |
Sunday Morning |
Snow Level 4000' |
Sunday Afternoon |
Snow Level 3500' |
Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
Sunday Night |
Snow Level 3500' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' (Easterly Flow *) |
Monday Afternoon |
Snow Level 3500' (Easterly Flow *) |
Snoqualmie Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 2500' (Easterly Flow *) |
Saturday Night |
Snow Level 3500' |
Sunday Morning |
Snow Level 4000' |
Sunday Afternoon |
Snow Level 3500' |
Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
Sunday Night |
Snow Level 3500' (Easterly Flow *) |
Monday Morning |
Snow Level 3500' (Easterly Flow *) |
Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
Mt. Rainier & Crystal | Elevation |
---|---|
Saturday Evening |
Snow Level 3000' (Easterly Flow *) |
Saturday Night |
Snow Level 4000' |
Sunday Morning |
Snow Level 4000' |
Sunday Afternoon |
Snow Level 4000' |
Sunday Evening |
Snow Level 4000' (Easterly Flow *) |
Sunday Night |
Snow Level 3500' (Easterly Flow *) |
Monday Morning |
Snow Level 3000' (Easterly Flow *) |
Monday Afternoon |
Snow Level 6500' (Easterly Flow *) |
Mt. Hood | Elevation |
---|---|
Saturday Evening |
Snow Level 4000' (Easterly Flow *) |
Saturday Night |
Snow Level 5500' |
Sunday Morning |
Snow Level 5000' |
Sunday Afternoon |
Snow Level 4500' |
Sunday Evening |
Snow Level 4500' (Easterly Flow *) |
Sunday Night |
Snow Level 4500' (Easterly Flow *) |
Monday Morning |
Snow Level 7500' (Easterly Flow *) |
Monday Afternoon |
Snow Level 8000' (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
Saturday Night | Friday | Friday Night | Friday | |
---|---|---|---|---|
4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
Hurricane Ridge | 0.25 | 0.25 | LT 0.10 | 0.50 - 0.75 |
Mt Baker Ski Area | 0.75 | 0.75 -1.00 | LT 0.25 | 0.50 |
Washington Pass | 0.25 - 0.50 | 0.50 | LT 0.25 | 0.25 |
Leavenworth | 0.25 - 0.50 | LT 0.25 | 0 | 0.25 |
Stevens Pass | 0.50 | 0.50 - 0.75 | 0.25 | 0.50 |
Snoqualmie Pass | 0.50 - 0.75 | 0.75 | LT 0.25 | 0.50 - 0.75 |
Mission Ridge | 0.25 - 0.50 | LT 0.10 | 0 | 0.25 |
Crystal Mt | 0.50 - 0.75 | 0.25 | LT 0.10 | 0.50 |
Paradise | 1.00 | 0.75 | 0.25 | 0.75 |
White Pass | 0.75 | 0.25 - 0.50 | LT 0.25 | 0.50 |
Mt Hood Meadows | 1.50 | LT 0.25 | LT 0.25 | 0.50 |
Timberline | 1.50 - 2.00 | LT 0.25 | LT 0.25 | 0.50 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Saturday Night | 0.25 |
Friday | 0.25 |
Friday Night | LT 0.10 |
Friday | 0.50 - 0.75 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Saturday Night | 0.75 |
Friday | 0.75 -1.00 |
Friday Night | LT 0.25 |
Friday | 0.50 |
Washington Pass | Precipitation Forecast |
---|---|
Saturday Night | 0.25 - 0.50 |
Friday | 0.50 |
Friday Night | LT 0.25 |
Friday | 0.25 |
Leavenworth | Precipitation Forecast |
---|---|
Saturday Night | 0.25 - 0.50 |
Friday | LT 0.25 |
Friday Night | 0 |
Friday | 0.25 |
Stevens Pass | Precipitation Forecast |
---|---|
Saturday Night | 0.50 |
Friday | 0.50 - 0.75 |
Friday Night | 0.25 |
Friday | 0.50 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Saturday Night | 0.50 - 0.75 |
Friday | 0.75 |
Friday Night | LT 0.25 |
Friday | 0.50 - 0.75 |
Mission Ridge | Precipitation Forecast |
---|---|
Saturday Night | 0.25 - 0.50 |
Friday | LT 0.10 |
Friday Night | 0 |
Friday | 0.25 |
Crystal Mt | Precipitation Forecast |
---|---|
Saturday Night | 0.50 - 0.75 |
Friday | 0.25 |
Friday Night | LT 0.10 |
Friday | 0.50 |
Paradise | Precipitation Forecast |
---|---|
Saturday Night | 1.00 |
Friday | 0.75 |
Friday Night | 0.25 |
Friday | 0.75 |
White Pass | Precipitation Forecast |
---|---|
Saturday Night | 0.75 |
Friday | 0.25 - 0.50 |
Friday Night | LT 0.25 |
Friday | 0.50 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Saturday Night | 1.50 |
Friday | LT 0.25 |
Friday Night | LT 0.25 |
Friday | 0.50 |
Timberline | Precipitation Forecast |
---|---|
Saturday Night | 1.50 - 2.00 |
Friday | LT 0.25 |
Friday Night | LT 0.25 |
Friday | 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: 1:54 PM PST Saturday, November 14, 2020
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Saturday Evening | SSW 15 - 25 | SSE 10 - 20 | SSE 10 - 20 | S 10 - 20 | SSW 15 - 25 |
Saturday Night | WSW 10 - 20 | WSW 15 - 25 | SSW 15 - 25 | SW 10 - 20 | WSW 25 - 35 |
Sunday Morning | W 25 - 35 | W 20 - 30 | W 25 - 35 | WSW 15 - 25 | W 30 - 40 |
Sunday Afternoon | W 15 - 25 | W 15 - 25 | W 20 - 30 | W 15 - 25 | W 25 - 35 |
Hurricane Ridge | Elevation |
---|---|
Saturday Evening | SSW 15 - 25 |
Saturday Night | WSW 10 - 20 |
Sunday Morning | W 25 - 35 |
Sunday Afternoon | W 15 - 25 |
Mt. Baker | Elevation |
---|---|
Saturday Evening | SSE 10 - 20 |
Saturday Night | WSW 15 - 25 |
Sunday Morning | W 20 - 30 |
Sunday Afternoon | W 15 - 25 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Saturday Evening | SSE 10 - 20 |
Saturday Night | SSW 15 - 25 |
Sunday Morning | W 25 - 35 |
Sunday Afternoon | W 20 - 30 |
Mt. Rainier | Elevation |
---|---|
Saturday Evening | S 10 - 20 |
Saturday Night | SW 10 - 20 |
Sunday Morning | WSW 15 - 25 |
Sunday Afternoon | W 15 - 25 |
Mt. Hood | Elevation |
---|---|
Saturday Evening | SSW 15 - 25 |
Saturday Night | WSW 25 - 35 |
Sunday Morning | W 30 - 40 |
Sunday Afternoon | W 25 - 35 |
Hurricane Ridge | Direction - Speed |
---|---|
Saturday Evening | SSW 15 - 25 |
Saturday Night | WSW 10 - 20 |
Sunday Morning | W 25 - 35 |
Sunday Afternoon | W 15 - 25 |
Mt. Baker | Direction - Speed |
---|---|
Saturday Evening | SSE 10 - 20 |
Saturday Night | WSW 15 - 25 |
Sunday Morning | W 20 - 30 |
Sunday Afternoon | W 15 - 25 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Saturday Evening | SSE 10 - 20 |
Saturday Night | SSW 15 - 25 |
Sunday Morning | W 25 - 35 |
Sunday Afternoon | W 20 - 30 |
Mt. Rainier | Direction - Speed |
---|---|
Saturday Evening | S 10 - 20 |
Saturday Night | SW 10 - 20 |
Sunday Morning | WSW 15 - 25 |
Sunday Afternoon | W 15 - 25 |
Mt. Hood | Direction - Speed |
---|---|
Saturday Evening | SSW 15 - 25 |
Saturday Night | WSW 25 - 35 |
Sunday Morning | W 30 - 40 |
Sunday 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 | |
---|---|---|---|---|---|
Saturday Evening | SW 30 - 40 | SW 25 - 35 | SW 30 - 40 | SW 40 - 55 | W 55 - 70 |
Saturday Night | SW 30 - 40 | SW 35 - 45 | W 45 - 60 | W 55 - 70 | W 55 - 70 |
Sunday Morning | W 45 - 60 | W 40 - 55 | W 50 - 65 | W 45 - 60 | W 50 - 65 |
Sunday Afternoon | W 40 - 55 | W 30 - 40 | W 45 - 60 | W 40 - 55 | W 45 - 60 |
Mt. Baker | Direction - Speed |
---|---|
Saturday Evening | SW 30 - 40 |
Saturday Night | SW 30 - 40 |
Sunday Morning | W 45 - 60 |
Sunday Afternoon | W 40 - 55 |
Washington Pass | Direction - Speed |
---|---|
Saturday Evening | SW 25 - 35 |
Saturday Night | SW 35 - 45 |
Sunday Morning | W 40 - 55 |
Sunday Afternoon | W 30 - 40 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Saturday Evening | SW 30 - 40 |
Saturday Night | W 45 - 60 |
Sunday Morning | W 50 - 65 |
Sunday Afternoon | W 45 - 60 |
Mt. Rainier | Direction - Speed |
---|---|
Saturday Evening | SW 40 - 55 |
Saturday Night | W 55 - 70 |
Sunday Morning | W 45 - 60 |
Sunday Afternoon | W 40 - 55 |
Mt. Hood | Direction - Speed |
---|---|
Saturday Evening | W 55 - 70 |
Saturday Night | W 55 - 70 |
Sunday Morning | W 50 - 65 |
Sunday Afternoon | W 45 - 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.
Issued: 1:54 PM PST Saturday, November 14, 2020
Extended Weather Synopsis for Friday night through Friday
After a warm and wet Monday, precipitation should decrease from south to north with some lingering showers, especially near the Canadian border. Warm air and high snow levels remain in place into Tuesday, before an associated cold front swings through the area late in the day or early evening. As the colder air moves into the region, we should see an increase in rain and snow in the mountains. There are still some details to work out in the weather models with this system, but a consistent source of moisture and a favorable wind direction seems to keep significant precipitation over the mountains through at least Wednesday.
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Monday Night | Snow Level | 5500' - 7500' | 7000' - 8000' | 7000' - 8000' | * |
Tuesday | Snow Level | 5000' - 7000' | 5000' - 7000' | 5000' - 7000' | * |
Tuesday Night | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' | * |
Wednesday | Snow Level | 2500' - 3500' | 2500' - 3500' | 3000' - 4000' | * |
Mt. Baker | Elevation |
---|---|
Monday Night |
Snow Level 5500' - 7500' (Easterly Flow *) |
Tuesday |
Snow Level 5000' - 7000' (Easterly Flow *) |
Tuesday Night |
Snow Level 3500' - 4500' (Easterly Flow *) |
Wednesday |
Snow Level 2500' - 3500' (Easterly Flow *) |
Snoqualmie Pass | Elevation |
---|---|
Monday Night |
Snow Level 7000' - 8000' (Easterly Flow *) |
Tuesday |
Snow Level 5000' - 7000' (Easterly Flow *) |
Tuesday Night |
Snow Level 3500' - 4500' (Easterly Flow *) |
Wednesday |
Snow Level 2500' - 3500' (Easterly Flow *) |
Mt. Hood | Elevation |
---|---|
Monday Night |
Snow Level 7000' - 8000' (Easterly Flow *) |
Tuesday |
Snow Level 5000' - 7000' (Easterly Flow *) |
Tuesday Night |
Snow Level 4000' - 5000' (Easterly Flow *) |
Wednesday |
Snow Level 3000' - 4000' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Nov 13, 2020
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