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 Thursday
This is the last Mountain Weather Forecast of the 2018-19 season. Thanks for a great season!
The calendar may say late April but it feels like winter in the mountains this weekend. Several inches of snow fell along the west slopes of the Cascades above 4000' Saturday as temperatures struggled to climb above freezing. The pattern won't change much over the next few days as we stay on the backside of a cold upper level trough carved out over B.C and the Pacific Northwest. Scattered showers left over from convergence zones this evening should taper off with skies clearing out overnight. Moderate NW alpine winds will also decrease overnight.
After a sunny start to Sunday, increasing instability will allow for showers to build during the afternoon hours, primarily closer to the cold upper low over the north and central Washington Cascades. The steering flow will be weaker than Saturday, so expect the showers to be stationary or to slowly drift S-SW. There may be enough instability to support a few thunderstorms over these same areas Sunday afternoon. The southern Washington Cascades will likely experience less shower coverage while the Olympics and Mt. Hood area should only see afternoon cumulus. Once again, skies should clear Sunday night.
A similar pattern looks likely for Monday although there is lower confidence which areas will see the most shower activity Monday afternoon. Monday may also be slightly more unstable and present a better chance for afternoon thunderstorms.
Weather Forecast
Hurricane Ridge
Saturday Night | Partly cloudy with a slight chance of a light rain or snow shower in the evening, becoming mostly clear after midnight. |
Sunday | Mostly sunny in the morning, becoming partly sunny in the afternoon with a slight chance of light rain or snow showers. |
Mt. Baker
Saturday Night | Mostly cloudy with a chance of rain or snow showers in the evening, becoming mostly clear after midnight. |
Sunday | Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon with scattered light rain or snow showers. Slight chance of an afternoon thunderstorm. |
Washington Pass and Leavenworth
Saturday Night | Mostly cloudy with a chance of rain or snow showers in the evening, becoming mostly clear after midnight. |
Sunday | Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon with scattered light rain or snow showers. Slight chance of an afternoon thunderstorm. |
Stevens and Snoqualmie Pass
Saturday Night | Mostly cloudy with scattered light rain or snow showers, locally moderate near the convergence zone this evening, becoming mostly clear late tonight. |
Sunday | Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon with scattered light rain or snow showers. Slight chance of an afternoon thunderstorm. |
Mt. Rainier, Crystal and White Pass
Saturday Night | Mostly cloudy with scattered light rain or snow showers, locally moderate near the convergence zone this evening, becoming mostly clear late tonight. |
Sunday | Mostly sunny in the morning, becoming partly sunny in the afternoon with a slight chance of light rain or snow showers. |
Mt. Hood
Saturday Night | Mostly cloudy with a chance of rain or snow showers in the evening, becoming mostly clear after midnight. Windy. |
Sunday | Mostly sunny. |
Issued: 2:51 PM PDT Saturday, April 27, 2019
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 | 3500' | 3500' | 3500' | 4000' | 3500' | 3500' | 3500' | 4000' |
Saturday Night | Freezing Level | 3000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2500' |
Sunday Morning | Freezing Level | 4000' | 3000' | 3000' | 3000' | 3000' | 3000' | 3000' | 3500' |
Sunday Afternoon | Snow Level | 5000' | 5000' | 5000' | 5000' | 5000' | 5000' | 6000' | 6000' |
Sunday Evening | Snow Level | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 5000' |
Sunday Night | Freezing Level | 4500' | 4000' | 4000' | 4500' | 4000' | 4000' | 4000' | 4000' |
Monday Morning | Freezing Level | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' |
Monday Afternoon | Snow Level | 5000' | 5000' | 5000' | 5000' | 5000' | 5000' | 5500' | 6000' |
Hurricane Ridge | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 3000' |
Sunday Morning |
Freezing Level 4000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4500' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Mt. Baker | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Washington Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Leavenworth | Elevation |
---|---|
Saturday Evening |
Snow Level 4000' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4500' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Stevens Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Snoqualmie Pass | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 5000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5000' |
Mt. Rainier & Crystal | Elevation |
---|---|
Saturday Evening |
Snow Level 3500' |
Saturday Night |
Freezing Level 2000' |
Sunday Morning |
Freezing Level 3000' |
Sunday Afternoon |
Snow Level 6000' |
Sunday Evening |
Snow Level 4500' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday Afternoon |
Snow Level 5500' |
Mt. Hood | Elevation |
---|---|
Saturday Evening |
Snow Level 4000' |
Saturday Night |
Freezing Level 2500' |
Sunday Morning |
Freezing Level 3500' |
Sunday Afternoon |
Snow Level 6000' |
Sunday Evening |
Snow Level 5000' |
Sunday Night |
Freezing Level 4000' |
Monday Morning |
Freezing Level 4500' |
Monday 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
Saturday Night | Thursday | Thursday Night | Thursday | |
---|---|---|---|---|
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 | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
Washington Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
Leavenworth | 0 | LT 0.10 | 0 | LT 0.10 |
Stevens Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
Snoqualmie Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
Mission Ridge | 0 | LT 0.10 | 0 | LT 0.10 |
Crystal Mt | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
Paradise | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
White Pass | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
Mt Hood Meadows | LT 0.10 | 0 | 0 | 0 |
Timberline | LT 0.10 | 0 | 0 | 0 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Saturday Night | 0 |
Thursday | 0 |
Thursday Night | 0 |
Thursday | 0 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Washington Pass | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Leavenworth | Precipitation Forecast |
---|---|
Saturday Night | 0 |
Thursday | LT 0.10 |
Thursday Night | 0 |
Thursday | LT 0.10 |
Stevens Pass | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | LT 0.10 |
Thursday | LT 0.10 |
Mission Ridge | Precipitation Forecast |
---|---|
Saturday Night | 0 |
Thursday | LT 0.10 |
Thursday Night | 0 |
Thursday | LT 0.10 |
Crystal Mt | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | 0 |
Thursday | LT 0.10 |
Paradise | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | 0 |
Thursday | LT 0.10 |
White Pass | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | LT 0.10 |
Thursday Night | 0 |
Thursday | LT 0.10 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | 0 |
Thursday Night | 0 |
Thursday | 0 |
Timberline | Precipitation Forecast |
---|---|
Saturday Night | LT 0.10 |
Thursday | 0 |
Thursday Night | 0 |
Thursday | 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: 2:51 PM PDT Saturday, April 27, 2019
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Saturday Evening | NW 5 - 15 | WNW 5 - 15 | NW 10 - 20 | NW 10 - 20 | WNW 20 - 30 |
Saturday Night | N 5 - 15 | N 5 - 15 | NW 10 - 20 | NNW 10 - 20 | NW 5 - 15 |
Sunday Morning | NE 0 - 10 | NE 5 - 15 | E 5 - 15 | NE 0 - 10 | NE 10 - 20 |
Sunday Afternoon | N 0 - 10 | N 0 - 10 | NE 0 - 10 | N 0 - 10 | NE 10 - 20 |
Hurricane Ridge | Elevation |
---|---|
Saturday Evening | NW 5 - 15 |
Saturday Night | N 5 - 15 |
Sunday Morning | NE 0 - 10 |
Sunday Afternoon | N 0 - 10 |
Mt. Baker | Elevation |
---|---|
Saturday Evening | WNW 5 - 15 |
Saturday Night | N 5 - 15 |
Sunday Morning | NE 5 - 15 |
Sunday Afternoon | N 0 - 10 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Saturday Evening | NW 10 - 20 |
Saturday Night | NW 10 - 20 |
Sunday Morning | E 5 - 15 |
Sunday Afternoon | NE 0 - 10 |
Mt. Rainier | Elevation |
---|---|
Saturday Evening | NW 10 - 20 |
Saturday Night | NNW 10 - 20 |
Sunday Morning | NE 0 - 10 |
Sunday Afternoon | N 0 - 10 |
Mt. Hood | Elevation |
---|---|
Saturday Evening | WNW 20 - 30 |
Saturday Night | NW 5 - 15 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 10 - 20 |
Hurricane Ridge | Direction - Speed |
---|---|
Saturday Evening | NW 5 - 15 |
Saturday Night | N 5 - 15 |
Sunday Morning | NE 0 - 10 |
Sunday Afternoon | N 0 - 10 |
Mt. Baker | Direction - Speed |
---|---|
Saturday Evening | WNW 5 - 15 |
Saturday Night | N 5 - 15 |
Sunday Morning | NE 5 - 15 |
Sunday Afternoon | N 0 - 10 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Saturday Evening | NW 10 - 20 |
Saturday Night | NW 10 - 20 |
Sunday Morning | E 5 - 15 |
Sunday Afternoon | NE 0 - 10 |
Mt. Rainier | Direction - Speed |
---|---|
Saturday Evening | NW 10 - 20 |
Saturday Night | NNW 10 - 20 |
Sunday Morning | NE 0 - 10 |
Sunday Afternoon | N 0 - 10 |
Mt. Hood | Direction - Speed |
---|---|
Saturday Evening | WNW 20 - 30 |
Saturday Night | NW 5 - 15 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 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 | |
---|---|---|---|---|---|
Saturday Evening | N 25 - 35 | NW 30 - 40 | NW 25 - 35 | NW 25 - 35 | NW 25 - 35 |
Saturday Night | N 20 - 30 | N 20 - 30 | N 20 - 30 | N 20 - 30 | N 15 - 25 |
Sunday Morning | NE 10 - 20 | NE 10 - 20 | NE 10 - 20 | NE 10 - 20 | N 10 - 20 |
Sunday Afternoon | NE 0 - 10 | NE 0 - 10 | NE 0 - 10 | NE 0 - 10 | NE 15 - 25 |
Mt. Baker | Direction - Speed |
---|---|
Saturday Evening | N 25 - 35 |
Saturday Night | N 20 - 30 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 0 - 10 |
Washington Pass | Direction - Speed |
---|---|
Saturday Evening | NW 30 - 40 |
Saturday Night | N 20 - 30 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 0 - 10 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Saturday Evening | NW 25 - 35 |
Saturday Night | N 20 - 30 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 0 - 10 |
Mt. Rainier | Direction - Speed |
---|---|
Saturday Evening | NW 25 - 35 |
Saturday Night | N 20 - 30 |
Sunday Morning | NE 10 - 20 |
Sunday Afternoon | NE 0 - 10 |
Mt. Hood | Direction - Speed |
---|---|
Saturday Evening | NW 25 - 35 |
Saturday Night | N 15 - 25 |
Sunday Morning | N 10 - 20 |
Sunday Afternoon | NE 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: 2:51 PM PDT Saturday, April 27, 2019
Extended Weather Synopsis for Thursday night through Thursday
The upper level trough will finally exit as it pushes into the Great Basin Monday night and allows shortwave upper level ridging to build over the area on Tuesday. There is a slight chance of afternoon showers on Tuesday, but there should be fewer clouds/showers as freezing levels bump up a notch. Wednesday looks similar to Tuesday with mainly dry conditions forecast as the next trough upstream in northerly flow aloft approaches the Pacific Northwest.
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Monday Night | Freezing Level | 3500' - 4500' | 4000' - 5000' | 4000' - 5000' | |
Tuesday | Freezing Level | 6000' - 7000' | 6000' - 7000' | 6500' - 7500' | |
Tuesday Night | Freezing Level | 4000' - 5000' | 4000' - 5000' | 4500' - 5500' | |
Wednesday | Freezing Level | 6000' - 7000' | 6000' - 7000' | 7000' - 8000' |
Mt. Baker | Elevation |
---|---|
Monday Night |
Freezing Level 3500' - 4500' |
Tuesday |
Freezing Level 6000' - 7000' |
Tuesday Night |
Freezing Level 4000' - 5000' |
Wednesday |
Freezing Level 6000' - 7000' |
Snoqualmie Pass | Elevation |
---|---|
Monday Night |
Freezing Level 4000' - 5000' |
Tuesday |
Freezing Level 6000' - 7000' |
Tuesday Night |
Freezing Level 4000' - 5000' |
Wednesday |
Freezing Level 6000' - 7000' |
Mt. Hood | Elevation |
---|---|
Monday Night |
Freezing Level 4000' - 5000' |
Tuesday |
Freezing Level 6500' - 7500' |
Tuesday Night |
Freezing Level 4500' - 5500' |
Wednesday |
Freezing Level 7000' - 8000' |
* 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 26, 2019
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