Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Wednesday night through Saturday
Upper level ridging currently over the PNW this afternoon is allowing plenty of low level clouds and moisture west of the Cascade crest. The ridge will begin to shift inland and flatten tonight as warm frontal moisture brushes Washington state. Precipitation and winds will increase on Thursday for the Olympics and especially the Mt. Baker area as the same frontal boundary taps into a modest amount of subtropical moisture. For areas further east and south of the frontal boundary hung up near the Canadian border, precipitation and cloud cover will taper from north to south across the region. Snow/freezing levels will be quite mild on Thursday with all areas in the warm sector.
A secondary wave traveling along the frontal boundary will lead the moisture axis southward Thursday night. A good shot of moisture is expected with the frontal passage for the central and north Cascades west of the crest.
While the bulk of the precipitation will fall as rain with this system, rapid cooling and post-frontal showers should make for a blustery and showery Friday with localized snow accumulations above 4500-5000' along the west slopes of the Cascades. A Puget Sound Convergence zone may form Friday morning and last through the evening. Windy but much drier conditions are expected along the east slopes of the Cascades on Friday.
Weather Forecast
Hurricane Ridge
Wednesday Night | Becoming cloudy with light rain developing later in the evening. Warming trend. |
Thursday | Light to occasionally moderate rain. Windy. |
Mt. Baker
Wednesday Night | Becoming cloudy with light rain and snow developing after midnight. |
Thursday | Moderate rain and snow. Windy. Warming trend. |
Washington Pass and Leavenworth
Wednesday Night | Becoming cloudy with light rain and snow developing after midnight. |
Thursday | Light to occasionally moderate rain and snow, heavier Washington Pass area. Windy in the alpine. Warming trend. |
Stevens and Snoqualmie Pass
Wednesday Night | Becoming cloudy with light rain and snow developing after midnight. |
Thursday | Periods of light rain and snow. Warming trend. |
Mt. Rainier, Crystal and White Pass
Wednesday Night | Becoming cloudy with light rain and snow developing after midnight. |
Thursday | Cloudy with periods of light rain and snow, becoming partly to mostly cloudy in the afternoon. Warming trend. |
Mt. Hood
Wednesday Night | Mostly cloudy overnight with increasing high clouds. |
Thursday | Mostly cloudy in the morning becoming partly to mostly sunny with filtered sunshine in the afternoon. Warming trend. |
Issued: 2:35 PM PDT Wednesday, April 17, 2019
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Wednesday Evening | Snow Level | 7500' | 6000' | 6500' | 7000' | 6000' | 6000' | 8000' | 10000' |
Wednesday Night | Snow Level | 9000' | 6000' | 5500' | 6500' | 7000' | 8000' | 9000' | 9500' |
Thursday Morning | Snow Level | 9000' | 6500' | 7000' | 9000' | 9000' | 9000' | 9000' | 9500' |
Thursday Afternoon | Snow Level | 9000' | 8500' | 8000' | 9000' | 9000' | 9500' | 9500' | 10500' |
Thursday Evening | Snow Level | 7000' | 8000' | 8000' | 9000' | 9000' | 9500' | 9500' | 10500' |
Thursday Night | Snow Level | 6000' | 6500' | 7500' | 8500' | 7500' | 7500' | 8000' | 9000' |
Friday Morning | Snow Level | 4500' | 5000' | 6000' | 6500' | 5000' | 5000' | 6000' | 8000' |
Friday Afternoon | Snow Level | 4500' | 4500' | 5500' | 6000' | 5000' | 5000' | 5500' | 6500' |
Hurricane Ridge | Elevation |
---|---|
Wednesday Evening |
Snow Level 7500' |
Wednesday Night |
Snow Level 9000' |
Thursday Morning |
Snow Level 9000' |
Thursday Afternoon |
Snow Level 9000' |
Thursday Evening |
Snow Level 7000' |
Thursday Night |
Snow Level 6000' |
Friday Morning |
Snow Level 4500' |
Friday Afternoon |
Snow Level 4500' |
Mt. Baker | Elevation |
---|---|
Wednesday Evening |
Snow Level 6000' |
Wednesday Night |
Snow Level 6000' |
Thursday Morning |
Snow Level 6500' |
Thursday Afternoon |
Snow Level 8500' |
Thursday Evening |
Snow Level 8000' |
Thursday Night |
Snow Level 6500' |
Friday Morning |
Snow Level 5000' |
Friday Afternoon |
Snow Level 4500' |
Washington Pass | Elevation |
---|---|
Wednesday Evening |
Snow Level 6500' |
Wednesday Night |
Snow Level 5500' |
Thursday Morning |
Snow Level 7000' |
Thursday Afternoon |
Snow Level 8000' |
Thursday Evening |
Snow Level 8000' |
Thursday Night |
Snow Level 7500' |
Friday Morning |
Snow Level 6000' |
Friday Afternoon |
Snow Level 5500' |
Leavenworth | Elevation |
---|---|
Wednesday Evening |
Snow Level 7000' |
Wednesday Night |
Snow Level 6500' |
Thursday Morning |
Snow Level 9000' |
Thursday Afternoon |
Snow Level 9000' |
Thursday Evening |
Snow Level 9000' |
Thursday Night |
Snow Level 8500' |
Friday Morning |
Snow Level 6500' |
Friday Afternoon |
Snow Level 6000' |
Stevens Pass | Elevation |
---|---|
Wednesday Evening |
Snow Level 6000' |
Wednesday Night |
Snow Level 7000' |
Thursday Morning |
Snow Level 9000' |
Thursday Afternoon |
Snow Level 9000' |
Thursday Evening |
Snow Level 9000' |
Thursday Night |
Snow Level 7500' |
Friday Morning |
Snow Level 5000' |
Friday Afternoon |
Snow Level 5000' |
Snoqualmie Pass | Elevation |
---|---|
Wednesday Evening |
Snow Level 6000' |
Wednesday Night |
Snow Level 8000' |
Thursday Morning |
Snow Level 9000' |
Thursday Afternoon |
Snow Level 9500' |
Thursday Evening |
Snow Level 9500' |
Thursday Night |
Snow Level 7500' |
Friday Morning |
Snow Level 5000' |
Friday Afternoon |
Snow Level 5000' |
Mt. Rainier & Crystal | Elevation |
---|---|
Wednesday Evening |
Snow Level 8000' |
Wednesday Night |
Snow Level 9000' |
Thursday Morning |
Snow Level 9000' |
Thursday Afternoon |
Snow Level 9500' |
Thursday Evening |
Snow Level 9500' |
Thursday Night |
Snow Level 8000' |
Friday Morning |
Snow Level 6000' |
Friday Afternoon |
Snow Level 5500' |
Mt. Hood | Elevation |
---|---|
Wednesday Evening |
Snow Level 10000' |
Wednesday Night |
Snow Level 9500' |
Thursday Morning |
Snow Level 9500' |
Thursday Afternoon |
Snow Level 10500' |
Thursday Evening |
Snow Level 10500' |
Thursday Night |
Snow Level 9000' |
Friday Morning |
Snow Level 8000' |
Friday Afternoon |
Snow Level 6500' |
* 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
Wednesday Night | Saturday | Saturday Night | Saturday | |
---|---|---|---|---|
4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
Hurricane Ridge | LT 0.25 | 0.25 - 0.50 | LT 0.25 | LT 0.10 |
Mt Baker Ski Area | LT 0.25 | 0.75 -1.00 | 1.00 - 1.50 | 0.50 |
Washington Pass | LT 0.10 | LT 0.25 | 0.25 - 0.50 | LT 0.25 |
Leavenworth | LT 0.10 | LT 0.10 | LT 0.25 | LT 0.10 |
Stevens Pass | LT 0.10 | LT 0.25 | LT 0.10 | 0.25 - 0.50 |
Snoqualmie Pass | LT 0.10 | LT 0.25 | 0.75 | 0.25 - 0.50 |
Mission Ridge | LT 0.10 | LT 0.10 | LT 0.10 | 0 |
Crystal Mt | LT 0.10 | LT 0.10 | 0.25 | LT 0.25 |
Paradise | LT 0.10 | LT 0.10 | 0.75 | 0.25 |
White Pass | LT 0.10 | 0 | 0.25 - 0.50 | LT 0.25 |
Mt Hood Meadows | 0 | 0 | LT 0.10 | LT 0.25 |
Timberline | 0 | 0 | LT 0.10 | 0.25 |
Hurricane Ridge | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.25 |
Saturday | 0.25 - 0.50 |
Saturday Night | LT 0.25 |
Saturday | LT 0.10 |
Mt Baker Ski Area | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.25 |
Saturday | 0.75 -1.00 |
Saturday Night | 1.00 - 1.50 |
Saturday | 0.50 |
Washington Pass | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.25 |
Saturday Night | 0.25 - 0.50 |
Saturday | LT 0.25 |
Leavenworth | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.10 |
Saturday Night | LT 0.25 |
Saturday | LT 0.10 |
Stevens Pass | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.25 |
Saturday Night | LT 0.10 |
Saturday | 0.25 - 0.50 |
Snoqualmie Pass | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.25 |
Saturday Night | 0.75 |
Saturday | 0.25 - 0.50 |
Mission Ridge | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.10 |
Saturday Night | LT 0.10 |
Saturday | 0 |
Crystal Mt | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.10 |
Saturday Night | 0.25 |
Saturday | LT 0.25 |
Paradise | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | LT 0.10 |
Saturday Night | 0.75 |
Saturday | 0.25 |
White Pass | Precipitation Forecast |
---|---|
Wednesday Night | LT 0.10 |
Saturday | 0 |
Saturday Night | 0.25 - 0.50 |
Saturday | LT 0.25 |
Mt Hood Meadows | Precipitation Forecast |
---|---|
Wednesday Night | 0 |
Saturday | 0 |
Saturday Night | LT 0.10 |
Saturday | LT 0.25 |
Timberline | Precipitation Forecast |
---|---|
Wednesday Night | 0 |
Saturday | 0 |
Saturday Night | LT 0.10 |
Saturday | 0.25 |
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: 2:35 PM PDT Wednesday, April 17, 2019
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Wednesday Evening | S 5 - 15 | SW 5 - 15 | SW 5 - 15 | SW 5 - 15 | WSW 10 - 20 |
Wednesday Night | S 10 - 20 | S 10 - 20 | SW 5 - 15 | SW 0 - 10 | SW 5 - 15 |
Thursday Morning | SW 15 - 25 | S 20 - 30 | SW 10 - 20 | SW 0 - 10 | SW 0 - 10 |
Thursday Afternoon | SW 20 - 30 | S 25 - 35 | SW 15 - 2 | SW 10 - 20 | SW 10 - 20 |
Hurricane Ridge | Elevation |
---|---|
Wednesday Evening | S 5 - 15 |
Wednesday Night | S 10 - 20 |
Thursday Morning | SW 15 - 25 |
Thursday Afternoon | SW 20 - 30 |
Mt. Baker | Elevation |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | S 10 - 20 |
Thursday Morning | S 20 - 30 |
Thursday Afternoon | S 25 - 35 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | SW 5 - 15 |
Thursday Morning | SW 10 - 20 |
Thursday Afternoon | SW 15 - 2 |
Mt. Rainier | Elevation |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | SW 0 - 10 |
Thursday Morning | SW 0 - 10 |
Thursday Afternoon | SW 10 - 20 |
Mt. Hood | Elevation |
---|---|
Wednesday Evening | WSW 10 - 20 |
Wednesday Night | SW 5 - 15 |
Thursday Morning | SW 0 - 10 |
Thursday Afternoon | SW 10 - 20 |
Hurricane Ridge | Direction - Speed |
---|---|
Wednesday Evening | S 5 - 15 |
Wednesday Night | S 10 - 20 |
Thursday Morning | SW 15 - 25 |
Thursday Afternoon | SW 20 - 30 |
Mt. Baker | Direction - Speed |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | S 10 - 20 |
Thursday Morning | S 20 - 30 |
Thursday Afternoon | S 25 - 35 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | SW 5 - 15 |
Thursday Morning | SW 10 - 20 |
Thursday Afternoon | SW 15 - 2 |
Mt. Rainier | Direction - Speed |
---|---|
Wednesday Evening | SW 5 - 15 |
Wednesday Night | SW 0 - 10 |
Thursday Morning | SW 0 - 10 |
Thursday Afternoon | SW 10 - 20 |
Mt. Hood | Direction - Speed |
---|---|
Wednesday Evening | WSW 10 - 20 |
Wednesday Night | SW 5 - 15 |
Thursday Morning | SW 0 - 10 |
Thursday Afternoon | SW 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 | |
---|---|---|---|---|---|
Wednesday Evening | W 30 - 40 | W 30 - 40 | W 30 - 40 | W 25 - 35 | W 10 - 20 |
Wednesday Night | SW 25 - 35 | SW 25 - 35 | SW 25 - 35 | WSW 20 - 30 | WSW 20 - 30 |
Thursday Morning | SW 30 - 40 | SW 30 - 40 | SW 25 - 35 | SW 25 - 35 | SW 20 - 30 |
Thursday Afternoon | SW 35 - 45 | SW 35 - 45 | SW 30 - 40 | SW 30 - 40 | SW 25 - 35 |
Mt. Baker | Direction - Speed |
---|---|
Wednesday Evening | W 30 - 40 |
Wednesday Night | SW 25 - 35 |
Thursday Morning | SW 30 - 40 |
Thursday Afternoon | SW 35 - 45 |
Washington Pass | Direction - Speed |
---|---|
Wednesday Evening | W 30 - 40 |
Wednesday Night | SW 25 - 35 |
Thursday Morning | SW 30 - 40 |
Thursday Afternoon | SW 35 - 45 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Wednesday Evening | W 30 - 40 |
Wednesday Night | SW 25 - 35 |
Thursday Morning | SW 25 - 35 |
Thursday Afternoon | SW 30 - 40 |
Mt. Rainier | Direction - Speed |
---|---|
Wednesday Evening | W 25 - 35 |
Wednesday Night | WSW 20 - 30 |
Thursday Morning | SW 25 - 35 |
Thursday Afternoon | SW 30 - 40 |
Mt. Hood | Direction - Speed |
---|---|
Wednesday Evening | W 10 - 20 |
Wednesday Night | WSW 20 - 30 |
Thursday Morning | SW 20 - 30 |
Thursday Afternoon | SW 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.
Issued: 2:35 PM PDT Wednesday, April 17, 2019
Extended Weather Synopsis for Saturday night through Saturday
Showers will quickly taper Friday evening and a rather dry and uneventful weekend weather-wise is on tap for our region. Freezing levels should rebound nicely on Saturday into the 6500-7500 ft range and extend through the weekend. An approaching frontal system may begin to spread high cloud inland late Sunday afternoon.
Extended Snow/Freezing Levels
Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
---|---|---|---|---|---|
Friday Night | Snow Level | 2500' - 3500' | 3000' - 4000' | 5000' - 6000' | |
Saturday | Freezing Level | 6000' - 7000' | 6500' - 7500' | 6500' - 7500' | |
Saturday Night | Freezing Level | 6000' - 7000' | 7000' - 8000' | 7500' - 8500' | |
Sunday | Freezing Level | 6000' - 7000' | 7000' - 8000' | 8000' - 9000' |
Mt. Baker | Elevation |
---|---|
Friday Night |
Snow Level 2500' - 3500' |
Saturday |
Freezing Level 6000' - 7000' |
Saturday Night |
Freezing Level 6000' - 7000' |
Sunday |
Freezing Level 6000' - 7000' |
Snoqualmie Pass | Elevation |
---|---|
Friday Night |
Snow Level 3000' - 4000' |
Saturday |
Freezing Level 6500' - 7500' |
Saturday Night |
Freezing Level 7000' - 8000' |
Sunday |
Freezing Level 7000' - 8000' |
Mt. Hood | Elevation |
---|---|
Friday Night |
Snow Level 5000' - 6000' |
Saturday |
Freezing Level 6500' - 7500' |
Saturday Night |
Freezing Level 7500' - 8500' |
Sunday |
Freezing Level 8000' - 9000' |
* 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 16, 2019
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