Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday night through Tuesday
An active pattern continues through the forecast period. A potent trough has shifted east of the region. On Tuesday night, temperatures will drop overnight, bringing snow to near Snoqualmie Pass level. Weak lingering convergence activity (focused from Snoqualmie to Mt. Rainier) should end while very weak orographic rain and snow showers should sustain along the west slopes of the Cascades as the next system approaches from the NW. Mt. Hood should receive sustained light orographic snow due to strong sustained winds overnight. Temperatures should cool, bringing snow levels to near Snoqualmie Pass by Wednesday morning.
On Wednesday, light snow (and low elevation rain) should increase ahead of a frontal system arriving in the afternoon. Rain and snow will become moderate to occasionally heavy by afternoon. Snow levels are expected to be low enough that Stevens Pass, Mt. Baker, and Paradise are likely to pick significant snow totals by the end of the day on Wednesday. West winds will increase into the upper end of the moderate range for much of the Washington Cascades and should remain strong over Mt. Hood.
Wednesday night through Thursday morning, a stiff WNW flow will keep orographic rain and snowfall going from the mountain loop southward; the rain and snow amount increasing the further south you go with heavy snow accumulations continuing for Paradise and Mt. Hood. The rain and snow should shift into the Mt. Baker area late in the day on Thursday.
Weather Forecast
Hurricane Ridge
| Tuesday Night | Mostly cloudy. Light to moderate winds. |
| Wednesday | Increasing light snow. Moderate winds. |
Mt. Baker
| Tuesday Night | Mostly cloudy early with increasing chances of very light snow developing. Light winds. |
| Wednesday | Increasing light rain and snow becoming moderate in the afternoon. Increasing moderate winds. |
Washington Pass and Leavenworth
| Tuesday Night | A chance of very light snow flurries and clouds near the Cascade Crest. Partly cloudy further east. Light winds. |
| Wednesday | Increasing light snow mainly near the Cascade Crest and expanding eastward late in the day. Moderate winds. |
Stevens and Snoqualmie Pass
| Tuesday Night | Cloudy with a chance of generally light convergence activity near Snoqualmie Pass in the evening. Then, very light snow likely to develop after midnight. Moderate winds at 5000 ft. Light to occasionally moderate W winds at pass level. |
| Wednesday | Increasing rain/snow mix at Snoqualmie with all snow at Stevens Pass; light in the morning, becoming moderate in the afternoon. 4-8" of snow expected at Stevens Pass. Moderate winds at 5000 ft. Light to moderate W winds at pass level. |
Mt. Rainier, Crystal and White Pass
| Tuesday Night | Decreasing light to moderate snow at Paradise in the evening with flurries at Crystal and Paradise before tapering off in all locations. Moderate winds. |
| Wednesday | Paradise: Increasing light snow mainly from late morning onwards, becoming moderate to heavy in the afternoon. Snow accumulations of 6-12" at Paradise. Crystal: Increasing light snow in the afternoon. White Pass: Increasing moderate snow in the afternoon. All areas: Light winds |
Mt. Hood
| Tuesday Night | Light snow. Strong winds. |
| Wednesday | Light snow becoming moderate to heavy in the afternoon. Moderate to strong winds. |
Issued: 2:53 PM PDT Tuesday, April 9, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Evening | Snow Level | 4500' | 4000' | 4500' | 4500' | 4000' | 4000' | 4500' | 4000' |
| Tuesday Night | Snow Level | 4000' | 3500' | 3500' | 3500' | 3000' | 3000' | 3500' | 3000' |
| Wednesday Morning | Snow Level | 3500' | 3000' | 3500' | 3500' | 3000' | 3000' | 3000' | 3000' |
| Wednesday Afternoon | Snow Level | 3500' | 3000' | 4000' | 4000' | 3500' | 3500' | 4000' | 4000' |
| Wednesday Evening | Snow Level | 3500' | 3000' | 4000' | 4000' | 3500' | 3500' | 4000' | 4500' |
| Wednesday Night | Snow Level | 3500' | 3000' | 3000' | 3500' | 3000' | 3500' | 4000' | 4500' |
| Thursday Morning | Snow Level | 3500' | 2500' | 3000' | 3500' | 3000' | 3000' | 3500' | 4000' |
| Thursday Afternoon | Snow Level | 4000' | 3500' | 4500' | 4500' | 4000' | 4000' | 4000' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Evening |
Snow Level 3500' |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Evening |
Snow Level 3000' |
| Wednesday Night |
Snow Level 3000' |
| Thursday Morning |
Snow Level 2500' |
| Thursday Afternoon |
Snow Level 3500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Evening |
Snow Level 4000' |
| Wednesday Night |
Snow Level 3000' |
| Thursday Morning |
Snow Level 3000' |
| Thursday Afternoon |
Snow Level 4500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Evening |
Snow Level 4000' |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 4500' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Evening |
Snow Level 3500' |
| Wednesday Night |
Snow Level 3000' |
| Thursday Morning |
Snow Level 3000' |
| Thursday Afternoon |
Snow Level 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Evening |
Snow Level 3500' |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3000' |
| Thursday Afternoon |
Snow Level 4000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Evening |
Snow Level 4000' |
| Wednesday Night |
Snow Level 4000' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 4000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Evening |
Snow Level 4500' |
| Wednesday Night |
Snow Level 4500' |
| Thursday Morning |
Snow Level 4000' |
| Thursday Afternoon |
Snow Level 4000' |
* 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
| Tuesday Night | Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.25 | LT 0.25 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | 0.50 - 0.75 | LT 0.10 | LT 0.25 |
| Washington Pass | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Leavenworth | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Stevens Pass | LT 0.25 | 0.25 - 0.50 | 0.25 | LT 0.25 |
| Snoqualmie Pass | LT 0.25 | 0.50 | 0.50 - 0.75 | 0.25 |
| Mission Ridge | 0 | LT 0.10 | 0 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.25 | 0.25 | 0.25 |
| Paradise | LT 0.25 | 0.75 | 0.75 -1.00 | 0.50 |
| White Pass | LT 0.10 | 0.25 | 0.50 | 0.25 |
| Mt Hood Meadows | LT 0.25 | 0.50 | 1.00 - 1.50 | 0.75 |
| Timberline | 0.25 | 0.50 - 0.75 | 1.50 | 0.75 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.25 |
| Tuesday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Tuesday | 0.25 - 0.50 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Tuesday | 0.50 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.25 |
| Tuesday Night | 0.25 |
| Tuesday | 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Tuesday | 0.75 |
| Tuesday Night | 0.75 -1.00 |
| Tuesday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Tuesday | 0.25 |
| Tuesday Night | 0.50 |
| Tuesday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Tuesday | 0.50 |
| Tuesday Night | 1.00 - 1.50 |
| Tuesday | 0.75 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 1.50 |
| Tuesday | 0.75 |
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: 2:53 PM PDT Tuesday, April 9, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Evening | WSW 10 - 20 | SW 5 - 15 | W 15 - 25 | W 15 - 25 | W 35 - 50 |
| Tuesday Night | W 10 - 20 | SW 5 - 15 | W 10 - 20 | W 10 - 20 | W 30 - 45 |
| Wednesday Morning | WSW 15 - 25 | SW 15 - 25 | W 15 - 25 | W 15 - 25 | W 25 - 35 |
| Wednesday Afternoon | WSW 20 - 30 | SSW 20 - 30 | WSW 20 - 30 | WSW 15 - 25 | W 30 - 45 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening | WSW 10 - 20 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening | SW 5 - 15 |
| Tuesday Night | SW 5 - 15 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | SSW 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | WSW 15 - 25 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening | W 35 - 50 |
| Tuesday Night | W 30 - 45 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | W 30 - 45 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Evening | WSW 10 - 20 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | SW 5 - 15 |
| Tuesday Night | SW 5 - 15 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | SSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | WSW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | W 35 - 50 |
| Tuesday Night | W 30 - 45 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | W 30 - 45 |
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 | |
|---|---|---|---|---|---|
| Tuesday Evening | WNW 20 - 30 | WNW 20 - 30 | WNW 35 - 50 | NW 35 - 50 | NW 40 - 60 |
| Tuesday Night | W 20 - 30 | WNW 20 - 30 | NW 40 - 60 | NW 35 - 50 | NNW 40 - 60 |
| Wednesday Morning | WSW 20 - 30 | W 25 - 35 | W 35 - 50 | W 35 - 50 | WNW 35 - 50 |
| Wednesday Afternoon | WSW 25 - 35 | WSW 25 - 35 | W 30 - 45 | WNW 35 - 50 | W 45 - 65 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 20 - 30 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | WSW 20 - 30 |
| Wednesday Afternoon | WSW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 20 - 30 |
| Tuesday Night | WNW 20 - 30 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | WSW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 35 - 50 |
| Tuesday Night | NW 40 - 60 |
| Wednesday Morning | W 35 - 50 |
| Wednesday Afternoon | W 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | NW 35 - 50 |
| Tuesday Night | NW 35 - 50 |
| Wednesday Morning | W 35 - 50 |
| Wednesday Afternoon | WNW 35 - 50 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | NW 40 - 60 |
| Tuesday Night | NNW 40 - 60 |
| Wednesday Morning | WNW 35 - 50 |
| Wednesday Afternoon | W 45 - 65 |
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: 2:53 PM PDT Tuesday, April 9, 2019
Extended Weather Synopsis for Tuesday night through Tuesday
Light post-frontal snowshowers should decrease Thursday night and will be very light on Friday through Friday night, with weak ridging in place, but it no longer appears that we will get much sunshine along the W slopes of the Cascades on Friday. The next potent spring storm arrives on a WNW flow at lowering snow levels with rain, snow and wind likely increasing during the day on Saturday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday Night | Snow Level | 3000' - 4000' | 3500' - 4500' | 4000' - 5000' | |
| Friday | Snow Level | 3000' - 4000' | 3500' - 4500' | 3500' - 4500' | |
| Friday Night | Snow Level | 3500' - 4500' | 3500' - 4500' | 4500' - 5500' | |
| Saturday | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Night |
Snow Level 3000' - 4000' |
| Friday |
Snow Level 3000' - 4000' |
| Friday Night |
Snow Level 3500' - 4500' |
| Saturday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Night |
Snow Level 3500' - 4500' |
| Friday |
Snow Level 3500' - 4500' |
| Friday Night |
Snow Level 3500' - 4500' |
| Saturday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Night |
Snow Level 4000' - 5000' |
| Friday |
Snow Level 3500' - 4500' |
| Friday Night |
Snow Level 4500' - 5500' |
| Saturday |
Snow Level 4000' - 5000' |
* 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 9, 2019
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