Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Friday
This is the last mountain weather forecast of the 2019-2020 season.
We bring the forecasting season to a close with a quiet weather pattern. The Pacific Northwest remains positioned between a broad trough over central and eastern North America and an amplified offshore ridge gradually creeps towards the coast. The ridge increasingly dominates our weather pattern with warming temperatures under dry northerly flow aloft.
Sunday night, with light winds and clear skies, a sharp inversion should form in some areas below 4000 ft. This should bring below-freezing temperatures to many areas even though some mid-mountain locations and ridges may not fall below freezing.
Freezing levels may top out at 6000-6500 ft on Monday afternoon under sunny skies.
Low-level W winds should increase slightly late Monday night as a weak disturbance moves into British Columbia with scattered mid and high-level clouds arriving. Tuesday should see increasing scattered clouds with partly to mostly cloudy skies by the afternoon as freezing levels rise to 7500-9500 ft.
Weather Forecast
Hurricane Ridge
Sunday Night | Clear and mild aloft with a low-level inversion below 4000 ft. |
Monday | Sunny skies and light winds. |
Mt. Baker
Sunday Night | Clear and mild aloft with a low-level inversion below 4000 ft. |
Monday | Sunny skies and light winds. |
Washington Pass and Leavenworth
Sunday Night | A few clouds in the evening giving way to clear skies. Mild aloft with a low-level inversion below 4000 ft and valley fog possibly developing. |
Monday | Sunny skies and light winds. |
Stevens and Snoqualmie Pass
Sunday Night | A few clouds in the evening giving way to clear skies. Mild aloft with a low-level inversion below 4000 ft. Light W winds through the mountain gaps will shift E and increase slightly overnight with light winds at 5000 ft. |
Monday | Sunny skies and light winds. Light E winds through the mountain gaps should shift back westerly. Winds will be light at 5000 ft. |
Mt. Rainier, Crystal and White Pass
Sunday Night | Scattered clouds in the evening giving way to clear skies. Mild aloft with a low-level inversion below 4000 ft. |
Monday | Sunny skies and light winds. |
Mt. Hood
Sunday Night | Scattered clouds in the evening giving way to clear skies. Mild aloft with a low-level inversion below 4000 ft. |
Monday | Sunny skies and light winds. |
Issued: 2:17 PM PDT Sunday, April 12, 2020
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Sunday Evening | Freezing Level | 5500' | 5000' | 4500' | 5000' | 5000' | 5000' | 5000' | 5500' |
Sunday Night | Freezing Level * | 5000' | 4000' | 3500' | 4000' | 4000' | 4500' | 4500' | 5000' |
Monday Morning | Freezing Level | 5000' | 4500' | 4500' | 4500' | 4500' | 4500' | 5000' | 5000' |
Monday Afternoon | Freezing Level | 6000' | 6000' | 6000' | 6000' | 6000' | 6000' | 6000' | 6500' |
Monday Evening | Freezing Level | 6500' | 6000' | 6000' | 6500' | 6500' | 6500' | 6500' | 7000' |
Monday Night | Freezing Level | 7000' | 5500' | 5500' | 6500' | 5500' | 6000' | 6000' | 7000' |
Tuesday Morning | Freezing Level | 8500' | 6000' | 6000' | 7000' | 6000' | 6500' | 7000' | 8000' |
Tuesday Afternoon | Freezing Level | 9500' | 7000' | 7500' | 8500' | 7500' | 7500' | 7500' | 8500' |
Hurricane Ridge | Elevation |
---|---|
Sunday Evening |
Freezing Level 5500' |
Sunday Night |
Freezing Level 5000' (Easterly Flow *) |
Monday Morning |
Freezing Level 5000' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6500' |
Monday Night |
Freezing Level 7000' |
Tuesday Morning |
Freezing Level 8500' |
Tuesday Afternoon |
Freezing Level 9500' |
Mt. Baker | Elevation |
---|---|
Sunday Evening |
Freezing Level 5000' |
Sunday Night |
Freezing Level 4000' (Easterly Flow *) |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6000' |
Monday Night |
Freezing Level 5500' |
Tuesday Morning |
Freezing Level 6000' |
Tuesday Afternoon |
Freezing Level 7000' |
Washington Pass | Elevation |
---|---|
Sunday Evening |
Freezing Level 4500' |
Sunday Night |
Freezing Level 3500' (Easterly Flow *) |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6000' |
Monday Night |
Freezing Level 5500' |
Tuesday Morning |
Freezing Level 6000' |
Tuesday Afternoon |
Freezing Level 7500' |
Leavenworth | Elevation |
---|---|
Sunday Evening |
Freezing Level 5000' |
Sunday Night |
Freezing Level 4000' (Easterly Flow *) |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6500' |
Monday Night |
Freezing Level 6500' |
Tuesday Morning |
Freezing Level 7000' |
Tuesday Afternoon |
Freezing Level 8500' |
Stevens Pass | Elevation |
---|---|
Sunday Evening |
Freezing Level 5000' |
Sunday Night |
Freezing Level 4000' (Easterly Flow *) |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6500' |
Monday Night |
Freezing Level 5500' |
Tuesday Morning |
Freezing Level 6000' |
Tuesday Afternoon |
Freezing Level 7500' |
Snoqualmie Pass | Elevation |
---|---|
Sunday Evening |
Freezing Level 5000' |
Sunday Night |
Freezing Level 4500' (Easterly Flow *) |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6500' |
Monday Night |
Freezing Level 6000' |
Tuesday Morning |
Freezing Level 6500' |
Tuesday Afternoon |
Freezing Level 7500' |
Mt. Rainier & Crystal | Elevation |
---|---|
Sunday Evening |
Freezing Level 5000' |
Sunday Night |
Freezing Level 4500' (Easterly Flow *) |
Monday Morning |
Freezing Level 5000' |
Monday Afternoon |
Freezing Level 6000' |
Monday Evening |
Freezing Level 6500' |
Monday Night |
Freezing Level 6000' |
Tuesday Morning |
Freezing Level 7000' |
Tuesday Afternoon |
Freezing Level 7500' |
Mt. Hood | Elevation |
---|---|
Sunday Evening |
Freezing Level 5500' |
Sunday Night |
Freezing Level 5000' (Easterly Flow *) |
Monday Morning |
Freezing Level 5000' |
Monday Afternoon |
Freezing Level 6500' |
Monday Evening |
Freezing Level 7000' |
Monday Night |
Freezing Level 7000' |
Tuesday Morning |
Freezing Level 8000' |
Tuesday Afternoon |
Freezing Level 8500' |
* 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 Night | Friday | Friday Night | Friday | |
---|---|---|---|---|
4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
Hurricane Ridge | 0 | 0 | 0 | 0 |
Mt Baker Ski Area | 0 | 0 | 0 | 0 |
Washington Pass | 0 | 0 | 0 | 0 |
Leavenworth | 0 | 0 | 0 | 0 |
Stevens Pass | 0 | 0 | 0 | 0 |
Snoqualmie Pass | 0 | 0 | 0 | 0 |
Mission Ridge | 0 | 0 | 0 | 0 |
Crystal Mt | 0 | 0 | 0 | 0 |
Paradise | 0 | 0 | 0 | 0 |
White Pass | 0 | 0 | 0 | 0 |
Mt Hood Meadows | 0 | 0 | 0 | 0 |
Timberline | 0 | 0 | 0 | 0 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Washington Pass | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Leavenworth | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Stevens Pass | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Mission Ridge | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Crystal Mt | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Paradise | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
White Pass | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
Timberline | Precipitation Forecast |
---|---|
Sunday Night | 0 |
Friday | 0 |
Friday Night | 0 |
Friday | 0 |
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: 2:17 PM PDT Sunday, April 12, 2020
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Sunday Evening | NNE 5 - 15 | NNE 5 - 15 | VAR 0 - 10 | VAR 0 - 10 | E 0 - 10 |
Sunday Night | NNE 5 - 15 | ENE 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | E 5 - 15 |
Monday Morning | NW 0 - 10 | VAR 0 - 10 | W 0 - 10 | W 0 - 10 | E 5 - 15 |
Monday Afternoon | W 0 - 10 | W 0 - 10 | W 0 - 10 | WNW 0 - 10 | VAR 0 - 10 |
Hurricane Ridge | Elevation |
---|---|
Sunday Evening | NNE 5 - 15 |
Sunday Night | NNE 5 - 15 |
Monday Morning | NW 0 - 10 |
Monday Afternoon | W 0 - 10 |
Mt. Baker | Elevation |
---|---|
Sunday Evening | NNE 5 - 15 |
Sunday Night | ENE 0 - 10 |
Monday Morning | VAR 0 - 10 |
Monday Afternoon | W 0 - 10 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Sunday Evening | VAR 0 - 10 |
Sunday Night | VAR 0 - 10 |
Monday Morning | W 0 - 10 |
Monday Afternoon | W 0 - 10 |
Mt. Rainier | Elevation |
---|---|
Sunday Evening | VAR 0 - 10 |
Sunday Night | VAR 0 - 10 |
Monday Morning | W 0 - 10 |
Monday Afternoon | WNW 0 - 10 |
Mt. Hood | Elevation |
---|---|
Sunday Evening | E 0 - 10 |
Sunday Night | E 5 - 15 |
Monday Morning | E 5 - 15 |
Monday Afternoon | VAR 0 - 10 |
Hurricane Ridge | Direction - Speed |
---|---|
Sunday Evening | NNE 5 - 15 |
Sunday Night | NNE 5 - 15 |
Monday Morning | NW 0 - 10 |
Monday Afternoon | W 0 - 10 |
Mt. Baker | Direction - Speed |
---|---|
Sunday Evening | NNE 5 - 15 |
Sunday Night | ENE 0 - 10 |
Monday Morning | VAR 0 - 10 |
Monday Afternoon | W 0 - 10 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Sunday Evening | VAR 0 - 10 |
Sunday Night | VAR 0 - 10 |
Monday Morning | W 0 - 10 |
Monday Afternoon | W 0 - 10 |
Mt. Rainier | Direction - Speed |
---|---|
Sunday Evening | VAR 0 - 10 |
Sunday Night | VAR 0 - 10 |
Monday Morning | W 0 - 10 |
Monday Afternoon | WNW 0 - 10 |
Mt. Hood | Direction - Speed |
---|---|
Sunday Evening | E 0 - 10 |
Sunday Night | E 5 - 15 |
Monday Morning | E 5 - 15 |
Monday Afternoon | VAR 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 | |
---|---|---|---|---|---|
Sunday Evening | NNE 10 - 20 | N 15 - 25 | N 10 - 20 | NNW 15 - 25 | NNW 10 - 20 |
Sunday Night | N 25 - 35 | N 30 - 40 | N 10 - 20 | N 10 - 20 | N 10 - 20 |
Monday Morning | N 15 - 25 | N 30 - 40 | N 20 - 30 | N 20 - 30 | NNE 25 - 35 |
Monday Afternoon | NNW 10 - 20 | NNW 15 - 25 | NNW 15 - 25 | NNW 15 - 25 | N 10 - 20 |
Mt. Baker | Direction - Speed |
---|---|
Sunday Evening | NNE 10 - 20 |
Sunday Night | N 25 - 35 |
Monday Morning | N 15 - 25 |
Monday Afternoon | NNW 10 - 20 |
Washington Pass | Direction - Speed |
---|---|
Sunday Evening | N 15 - 25 |
Sunday Night | N 30 - 40 |
Monday Morning | N 30 - 40 |
Monday Afternoon | NNW 15 - 25 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Sunday Evening | N 10 - 20 |
Sunday Night | N 10 - 20 |
Monday Morning | N 20 - 30 |
Monday Afternoon | NNW 15 - 25 |
Mt. Rainier | Direction - Speed |
---|---|
Sunday Evening | NNW 15 - 25 |
Sunday Night | N 10 - 20 |
Monday Morning | N 20 - 30 |
Monday Afternoon | NNW 15 - 25 |
Mt. Hood | Direction - Speed |
---|---|
Sunday Evening | NNW 10 - 20 |
Sunday Night | N 10 - 20 |
Monday Morning | NNE 25 - 35 |
Monday Afternoon | N 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: 2:17 PM PDT Sunday, April 12, 2020
Extended Weather Synopsis for Friday night through Friday
The same general weather pattern persists. A weak disturbance drops SE from British Columbia into Montana Tuesday night, bringing some subtle cooling and pulling in some westerly low-level flow and low clouds onshore with isolated rain showers possible over the mountains. The offshore ridge should remain dominant for our region and with the disturbance moving out Wednesday, so expect sunny and slightly warmer than seasonal weather with freezing levels in the 6000-8000 ft range through Thursday.
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Tuesday Night | Freezing Level | 6000' - 7500' | 6500' - 8000' | 9000' - 10500' | |
Wednesday | Freezing Level | 6500' - 7500' | 6500' - 7500' | 7000' - 8000' | |
Wednesday Night | Freezing Level | 6500' - 7500' | 7000' - 8000' | 7500' - 8500' | |
Thursday | Freezing Level | 6500' - 7500' | 6000' - 7000' | 6500' - 7500' |
Mt. Baker | Elevation |
---|---|
Tuesday Night |
Freezing Level 6000' - 7500' |
Wednesday |
Freezing Level 6500' - 7500' |
Wednesday Night |
Freezing Level 6500' - 7500' |
Thursday |
Freezing Level 6500' - 7500' |
Snoqualmie Pass | Elevation |
---|---|
Tuesday Night |
Freezing Level 6500' - 8000' |
Wednesday |
Freezing Level 6500' - 7500' |
Wednesday Night |
Freezing Level 7000' - 8000' |
Thursday |
Freezing Level 6000' - 7000' |
Mt. Hood | Elevation |
---|---|
Tuesday Night |
Freezing Level 9000' - 10500' |
Wednesday |
Freezing Level 7000' - 8000' |
Wednesday Night |
Freezing Level 7500' - 8500' |
Thursday |
Freezing Level 6500' - 7500' |
* 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 Apr 11, 2020
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