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
The weather pattern becomes somewhat less active moving forward. A region of low pressure remains centered over western Canada and continues to impact our region with cooler than average temperatures leading to weak instability at this juncture in early April.
Upper-level flow turns from light N to NW overnight. Scattered snow showers that built up during diurnal heating Wednesday and enhanced by a dying circulation center over NW Oregon should diminish Wednesday evening leaving partially clearing skies Wednesday night.
A disturbance rotating around the larger low arrives Wednesday afternoon to enhance light snow shower activity. Expect more sunshine first thing in the morning than in the mid-day or afternoon hours with a weak enhancement of westerly flow enhancing clouds and isolated shower activity slightly along the west slopes of the Cascades and Passes. Snow shower activity lingers with light W flow Thursday night as the disturbance shifts east.
Another slightly stronger disturbance arriving should bring increasing light snowfall on Friday to the north and central Cascades near and west of the Cascade. Winds also increase, perhaps reaching the moderate range for areas exposed to westerly flow such as Snoqualmie Pass and exposed ridges east of the Cascade Crest. Isolated strong gusts are possible.
Snow levels remain in the 1000-3000 ft range with a diurnal signal throughout the period. The main change is that as flow switches more westerly on Thursday, the east slopes of the Cascades should experience slightly warmer days Thursday and Friday.
Weather Forecast
Hurricane Ridge
| Wednesday Night | Mostly cloudy in the evening, becoming mostly clear after midnight. |
| Thursday | Mostly clear early with clouds developing and a chance of snow showers from late morning through the end of the day. |
Mt. Baker
| Wednesday Night | Mostly clear. |
| Thursday | Mostly cloudy with a chance of isolated snow showers. |
Washington Pass and Leavenworth
| Wednesday Night | Partly cloudy with decreasing isolated snow showers in the evening; skies clearing after midnight with some clouds lingering near the Cascade Crest. |
| Thursday | Mostly clear in the morning with increasing clouds and scattered snow showers in the afternoon. |
Stevens and Snoqualmie Pass
| Wednesday Night | Mostly cloudy with decreasing isolated snow showers in the evening. Partial clearing after midnight. Light W winds becoming variable through the Passes. Light 5000 ft winds. |
| Thursday | Clouds increasing with isolated to scattered snow showers developing, mainly in the afternoon. Light W winds through the Passes and at 5000 ft. |
Mt. Rainier, Crystal and White Pass
| Wednesday Night | Isolated snow showers tapering through the evening hours, then partial clearing. |
| Thursday | Partly cloudy early with light snow showers in the afternoon. Some isolated heavier snow squalls are possible. |
Mt. Hood
| Wednesday Night | Scattered snow showers tapering through the evening hours, then remaining mostly cloudy. |
| Thursday | Scattered showers increasing in the mid-day and afternoon hours. |
Issued: 2:35 PM PDT Wednesday, April 1, 2020
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 | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Wednesday Night | Snow Level | 1500' | 500' | 500' | 1000' | 1000' | 1000' | 1500' | 1500' |
| Thursday Morning | Snow Level | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Thursday Afternoon | Snow Level | 1500' | 2000' | 2500' | 3000' | 2500' | 2500' | 2500' | 3000' |
| Thursday Evening | Snow Level | 1500' | 1500' | 1500' | 1500' | 1500' | 1500' | 1500' | 2000' |
| Thursday Night | Snow Level | 1000' | 500' | 1000' | 1000' | 500' | 500' | 500' | 1000' |
| Friday Morning | Snow Level | 1500' | 1000' | 1500' | 1500' | 1500' | 1500' | 1500' | 2000' |
| Friday Afternoon | Snow Level | 1500' | 1000' | 1500' | 2000' | 1500' | 1500' | 2000' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1500' |
| Thursday Morning |
Snow Level 1500' |
| Thursday Afternoon |
Snow Level 1500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 1000' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 1500' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 1500' |
| Wednesday Night |
Snow Level 500' |
| Thursday Morning |
Snow Level 1500' |
| Thursday Afternoon |
Snow Level 2000' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 1000' |
| Friday Afternoon |
Snow Level 1000' |
| Washington Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 1500' |
| Wednesday Night |
Snow Level 500' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 2500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 1000' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 1500' |
| Leavenworth | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 3000' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 1000' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 2000' |
| Stevens Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 2500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 2500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 1500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1500' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 2500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 1500' |
| Friday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1500' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 3000' |
| Thursday Evening |
Snow Level 2000' |
| Thursday Night |
Snow Level 1000' |
| Friday Morning |
Snow Level 2000' |
| Friday Afternoon |
Snow Level 3000' |
* 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 | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | 0 | LT 0.10 | LT 0.10 | 0.25 |
| Washington Pass | 0 | LT 0.10 | 0 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 | LT 0.10 |
| Stevens Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.25 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.25 |
| Mission Ridge | LT 0.10 | 0 | 0 | 0 |
| Crystal Mt | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| White Pass | LT 0.10 | 0 | LT 0.25 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 | LT 0.10 | 0 |
| Timberline | LT 0.10 | LT 0.10 | LT 0.10 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Wednesday Night | 0 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Wednesday Night | 0 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | 0 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Wednesday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | 0 |
| Saturday Night | LT 0.25 |
| Saturday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | 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: 2:35 PM PDT Wednesday, April 1, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Wednesday Evening | NW 0 - 10 | N 0 - 10 | W 5 - 15 | WNW 0 - 10 | W 5 - 15 |
| Wednesday Night | SW 0 - 10 | VAR 0 - 10 | W 5 - 15 | WSW 0 - 10 | W 5 - 15 |
| Thursday Morning | SSW 0 - 10 | SSW 0 - 10 | WSW 0 - 10 | WSW 0 - 10 | W 5 - 15 |
| Thursday Afternoon | W 5 - 15 | WSW 5 - 15 | W 5 - 15 | WSW 5 - 15 | W 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Evening | NW 0 - 10 |
| Wednesday Night | SW 0 - 10 |
| Thursday Morning | SSW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Evening | N 0 - 10 |
| Wednesday Night | VAR 0 - 10 |
| Thursday Morning | SSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Wednesday Evening | WNW 0 - 10 |
| Wednesday Night | WSW 0 - 10 |
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | W 5 - 15 |
| Thursday Afternoon | W 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Wednesday Evening | NW 0 - 10 |
| Wednesday Night | SW 0 - 10 |
| Thursday Morning | SSW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Evening | N 0 - 10 |
| Wednesday Night | VAR 0 - 10 |
| Thursday Morning | SSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Evening | WNW 0 - 10 |
| Wednesday Night | WSW 0 - 10 |
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | W 5 - 15 |
| Thursday Afternoon | W 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 5 - 15 | W 5 - 15 | NW 10 - 20 | NW 10 - 20 | NNW 10 - 20 |
| Wednesday Night | W 5 - 15 | SW 5 - 15 | W 15 - 25 | W 10 - 20 | NW 10 - 20 |
| Thursday Morning | WSW 5 - 15 | WSW 5 - 15 | W 10 - 20 | W 10 - 20 | W 10 - 20 |
| Thursday Afternoon | SW 10 - 20 | WSW 10 - 20 | WSW 15 - 25 | WSW 10 - 20 | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | WSW 5 - 15 |
| Thursday Afternoon | SW 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | SW 5 - 15 |
| Thursday Morning | WSW 5 - 15 |
| Thursday Afternoon | WSW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Evening | NW 10 - 20 |
| Wednesday Night | W 15 - 25 |
| Thursday Morning | W 10 - 20 |
| Thursday Afternoon | WSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Evening | NW 10 - 20 |
| Wednesday Night | W 10 - 20 |
| Thursday Morning | W 10 - 20 |
| Thursday Afternoon | WSW 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Evening | NNW 10 - 20 |
| Wednesday Night | NW 10 - 20 |
| Thursday Morning | W 10 - 20 |
| Thursday Afternoon | W 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: 2:35 PM PDT Wednesday, April 1, 2020
Extended Weather Synopsis for Saturday night through Saturday
The long-range weather pattern looks relatively quiet. Friday night, the disturbance exits and a weak ridging moves into the region as lingering snow showers end. Models tend to show a mostly dry day on Saturday with potential clouds and light snow shower activity spinning in from low-pressure regions offshore and over California. The offshore low moves southeast toward California and should spin in some light snow showers Saturday night and Sunday, but amounts should be very light. Temperatures should moderate slightly Saturday through Sunday leaving us near seasonal norms.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Friday Night | Snow Level | 0' - 1000' | 500' - 1500' | 2000' - 3000' | |
| Saturday | Freezing Level | 2500' - 4500' | 2500' - 4500' | 3000' - 4000' | |
| Saturday Night | Snow Level | 2000' - 3000' | 2000' - 3000' | 2000' - 3000' | |
| Sunday | Snow Level | 2500' - 3500' | 2500' - 3500' | 2500' - 3500' |
| Mt. Baker | Elevation |
|---|---|
| Friday Night |
Snow Level 0' - 1000' |
| Saturday |
Freezing Level 2500' - 4500' |
| Saturday Night |
Snow Level 2000' - 3000' |
| Sunday |
Snow Level 2500' - 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Night |
Snow Level 500' - 1500' |
| Saturday |
Freezing Level 2500' - 4500' |
| Saturday Night |
Snow Level 2000' - 3000' |
| Sunday |
Snow Level 2500' - 3500' |
| Mt. Hood | Elevation |
|---|---|
| Friday Night |
Snow Level 2000' - 3000' |
| Saturday |
Freezing Level 3000' - 4000' |
| Saturday Night |
Snow Level 2000' - 3000' |
| Sunday |
Snow Level 2500' - 3500' |
* 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 Mar 31, 2020
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