Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I Extended Weather
Weather Synopsis
Precipitation is starting to pick up this afternoon ahead of an approaching cold front. Stormy conditions will develop across the mountains this evening as the front arrives and passes. This will bring periods of heavier snowfall and strong/gusty winds for all locations, including along the east slopes of the Cascades. With the jet stream squarely aimed at the Oregon coast, the southern volcanoes should take the brunt of this storm. As a result, places like Mt St Helens and Mt Hood could see very stormy conditions last throughout the night and into Saturday morning. As the front passes, winds should turn more westerly, and precipitation ease. By sunrise, snow levels fall to around 1500 feet across the mountains.
The snow will keep coming on Satuday, particularly for the west slopes of the Cascades. Plenty of moisture, on-shore flow, and an unstable atmosphere should combine to produce numerous showers. A few may even make their way further east. Since some of these showers will be convective, you could encounter locally heavy precipitation, gusty winds, graupel, and maybe even a bit of thunder. While showers are certain, sun breaks are much more tricky. You could see some significant sun breaks in the Olympics, North Cascades, and along the E slopes north of I90 as the day progresses.
Just as shower activity starts to wind down from the main storm, a series of short-wave systems will pass over the Pacific Northwest and reinvigorate snowfall. The first of these smaller storms appear to arrive late Saturday night/Sunday morning. With the jet still positioned just south of the forecast region, precipitation should favor the southern forecast zones and Mt Hood areas. Cold, cloudy, and showery weather will generally persist Sunday.
Weather Forecast
| Friday Night | Periods of heavy rain/snow in the evening, becoming showery. Moderate SW winds turning W and decreasing. |
|---|---|
| Saturday | Partly cloudy with significant sun breaks possible. Scattered showers could be heavy at times. Light to moderate W winds decreasing. |
| Friday Night | Stormy with heavy rain and snow in the evening. Becoming more showering overnight. Strong and gusty SSW winds turning W and decreasing. |
|---|---|
| Saturday | Cloudy with a few sun breaks possible. Scattered showers could be heavy at times, particularly in the afternoon. |
| Friday Night | Stormy with heavy rain/snow in the evening. Strong and gusty SW winds turning W and decreasing. |
|---|---|
| Saturday | Snow could be locally heavy at times. Light to moderate W winds. |
| Friday Night | Stormy, particularly on the volcanoes. Strong and gusty SW winds turning W and decreasing. |
|---|---|
| Saturday | Showers throughout the day, could be locally heavy at times. Sunbreaks possible, especially near the crest. Light to moderate W winds. |
| Friday Night | Cloudy with periods of heavier rain/snow. E winds develop at Pass level in the evening, then return W overnight. Moderate to strong SW ridgeline winds turning W. |
|---|---|
| Saturday | Cloudy with snow showers, could be locally heavy at times. Light to moderate W winds. |
| Friday Night | Stormy with periods of heavier rain and snow. E winds developing at Pass level in the evening, then returning W. Strong and gusty SW ridgelines winds, turning W and decreasing. |
|---|---|
| Saturday | Cloudy with rain and snow showers, could be heavy at times. Light to moderate W winds increasing in the afternoon. |
| Friday Night | Cloudy with periods of heavier snow showers. Moderate SW winds turning W and increasing slightly. |
|---|---|
| Saturday | Cloudy with a few sun breaks possible. Isolated showers could be locally heavy at times. Light to moderate W winds decreasing. |
| Friday Night | Cloudy with periods of heavier precipitation especially near the crest. Moderate to strong and gusty SW winds turning W. |
|---|---|
| Saturday | Cloudy in the morning becoming partly to mostly sunny. Scattered showers could be heavy at times. Moderate W winds becoming strong and gusty in the afternoon. |
| Friday Night | Cloudy with periods of heavier precipitation, especially near the crest. Strong and gusty SW winds turning W and decreasing slightly. |
|---|---|
| Saturday | Cloudy with a few sun breaks possible. Isolated showers could be locally heavy at times. Moderate to strong and gusty W winds increasing in the afternoon. |
| Friday Night | Very stormy with very strong and gusty winds, heavy snow, and poor visibility. |
|---|---|
| Saturday | Stormy with periods of heavy snow and strong and gusty W winds. |
Issued: 2:23 PM PDT Friday, March 31, 2023
Precipitation (in)
| Friday Night | Saturday | Saturday Night | Sunday | |
|---|---|---|---|---|
| 5 pm - 5 am | 5 am - 5 pm | 5 pm - 5 am | 5 am - 5 pm | |
| Hurricane Ridge | 0.25 | LT 0.25 | LT 0.10 | 0.25 |
| Mt Baker Ski Area | 0.75 | 0.25 | LT 0.25 | 0.25 |
| Mt. Loop - Barlow Pass | 0.50 - 0.75 | 0.25 - 0.50 | 0.50 | 0.25 |
| Stevens Pass | 0.25 - 0.50 | 0.25 | 0.25 | 0.25 |
| Snoqualmie Pass | 0.50 - 0.75 | 0.25 - 0.50 | 0.25 - 0.50 | 0.25 |
| Crystal Mt | 0.50 | 0.25 | 0.25 | 0.25 |
| Paradise | 0.75 -1.00 | 0.50 | 0.50 | 0.50 |
| White Pass | 0.50 - 0.75 | 0.25 - 0.50 | 0.25 | 0.25 |
| Washington Pass | 0.25 | LT 0.25 | LT 0.10 | LT 0.10 |
| Mission Ridge | 0.25 | LT 0.10 | 0 | LT 0.10 |
| Salmon la Sac - Gallagher Head | 0.50 | 0.25 | LT 0.25 | LT 0.25 |
| Tieton River - Darland Mt. | 0.25 - 0.50 | LT 0.25 | LT 0.25 | LT 0.25 |
| Mt Hood Meadows | 1.00 | 0.75 | 0.50 | 0.50 |
| Timberline | 1.00 - 1.50 | 0.75 -1.00 | 0.50 - 0.75 | 0.50 - 0.75 |
| Hurricane Ridge | Precipitation (in) |
|---|---|
| Friday Night | 0.25 |
| Saturday | LT 0.25 |
| Saturday Night | LT 0.10 |
| Sunday | 0.25 |
| Mt Baker Ski Area | Precipitation (in) |
|---|---|
| Friday Night | 0.75 |
| Saturday | 0.25 |
| Saturday Night | LT 0.25 |
| Sunday | 0.25 |
| Mt. Loop - Barlow Pass | Precipitation (in) |
|---|---|
| Friday Night | 0.50 - 0.75 |
| Saturday | 0.25 - 0.50 |
| Saturday Night | 0.50 |
| Sunday | 0.25 |
| Stevens Pass | Precipitation (in) |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Saturday | 0.25 |
| Saturday Night | 0.25 |
| Sunday | 0.25 |
| Snoqualmie Pass | Precipitation (in) |
|---|---|
| Friday Night | 0.50 - 0.75 |
| Saturday | 0.25 - 0.50 |
| Saturday Night | 0.25 - 0.50 |
| Sunday | 0.25 |
| Crystal Mt | Precipitation (in) |
|---|---|
| Friday Night | 0.50 |
| Saturday | 0.25 |
| Saturday Night | 0.25 |
| Sunday | 0.25 |
| Paradise | Precipitation (in) |
|---|---|
| Friday Night | 0.75 -1.00 |
| Saturday | 0.50 |
| Saturday Night | 0.50 |
| Sunday | 0.50 |
| White Pass | Precipitation (in) |
|---|---|
| Friday Night | 0.50 - 0.75 |
| Saturday | 0.25 - 0.50 |
| Saturday Night | 0.25 |
| Sunday | 0.25 |
| Washington Pass | Precipitation (in) |
|---|---|
| Friday Night | 0.25 |
| Saturday | LT 0.25 |
| Saturday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Mission Ridge | Precipitation (in) |
|---|---|
| Friday Night | 0.25 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Sunday | LT 0.10 |
| Salmon la Sac - Gallagher Head | Precipitation (in) |
|---|---|
| Friday Night | 0.50 |
| Saturday | 0.25 |
| Saturday Night | LT 0.25 |
| Sunday | LT 0.25 |
| Tieton River - Darland Mt. | Precipitation (in) |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Saturday | LT 0.25 |
| Saturday Night | LT 0.25 |
| Sunday | LT 0.25 |
| Mt Hood Meadows | Precipitation (in) |
|---|---|
| Friday Night | 1.00 |
| Saturday | 0.75 |
| Saturday Night | 0.50 |
| Sunday | 0.50 |
| Timberline | Precipitation (in) |
|---|---|
| Friday Night | 1.00 - 1.50 |
| Saturday | 0.75 -1.00 |
| Saturday Night | 0.50 - 0.75 |
| Sunday | 0.50 - 0.75 |
Issued: 2:23 PM PDT Friday, March 31, 2023
Snow Level (ft)
| Friday Evening* | Friday Night | Saturday Morning | Saturday Afternoon | Saturday Evening | Saturday Night | Sunday Morning* | Sunday Afternoon | |
|---|---|---|---|---|---|---|---|---|
| Olympics | 2500' | 1500' | 1000' | 1500' | 1000' | 500' | 1000' | 1500' |
| West North | 3000' | 1500' | 1000' | 1500' | 1000' | 500' | 500' | 1500' |
| West Central | 3000' | 2000' | 1500' | 2000' | 1000' | 1000' | 1000' | 1500' |
| West South | 3000' | 2000' | 1500' | 2000' | 1000' | 1000' | 1000' | 1500' |
| Stevens Pass | 3000' | 2000' | 1500' | 2000' | 1000' | 1000' | 1000' | 1500' |
| Snoqualmie Pass | 3000' | 2000' | 1500' | 2000' | 1000' | 1000' | 1000' | 1500' |
| East North | 3000' | 2000' | 1000' | 1500' | 500' | 500' | 500' | 1000' |
| East Central | 3000' | 2500' | 1500' | 2000' | 1000' | 500' | 500' | 1500' |
| East South | 3000' | 2500' | 1500' | 2000' | 1000' | 1000' | 1000' | 1500' |
| Mt. Hood | 3500' | 3000' | 2000' | 2500' | 1500' | 1000' | 1000' | 1500' |
| Olympics | Elevation |
|---|---|
| Friday Evening* | 2500' |
| Friday Night | 1500' |
| Saturday Morning | 1000' |
| Saturday Afternoon | 1500' |
| Saturday Evening | 1000' |
| Saturday Night | 500' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| West North | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 1500' |
| Saturday Morning | 1000' |
| Saturday Afternoon | 1500' |
| Saturday Evening | 1000' |
| Saturday Night | 500' |
| Sunday Morning* | 500' |
| Sunday Afternoon | 1500' |
| West Central | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2000' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| West South | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2000' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2000' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2000' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| East North | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2000' |
| Saturday Morning | 1000' |
| Saturday Afternoon | 1500' |
| Saturday Evening | 500' |
| Saturday Night | 500' |
| Sunday Morning* | 500' |
| Sunday Afternoon | 1000' |
| East Central | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2500' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 500' |
| Sunday Morning* | 500' |
| Sunday Afternoon | 1500' |
| East South | Elevation |
|---|---|
| Friday Evening* | 3000' |
| Friday Night | 2500' |
| Saturday Morning | 1500' |
| Saturday Afternoon | 2000' |
| Saturday Evening | 1000' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening* | 3500' |
| Friday Night | 3000' |
| Saturday Morning | 2000' |
| Saturday Afternoon | 2500' |
| Saturday Evening | 1500' |
| Saturday Night | 1000' |
| Sunday Morning* | 1000' |
| Sunday Afternoon | 1500' |
Issued: 2:23 PM PDT Friday, March 31, 2023
5000' Temperatures (°F)
| Friday Night | Saturday | ||
|---|---|---|---|
| Max / Min | Max / Min | ||
| Olympics | 29 / 24 | 28 / 23 | |
| West North | 28 / 24 | 27 / 24 | |
| West Central | 29 / 24 | 27 / 23 | |
| West South | 29 / 22 | 28 / 22 | |
| Stevens Pass | 28 / 24 | 26 / 23 | |
| Snoqualmie Pass | 29 / 24 | 27 / 23 | |
| East North | 26 / 19 | 25 / 19 | |
| East Central | 28 / 22 | 30 / 21 | |
| East South | 27 / 23 | 28 / 22 | |
| Mt. Hood | 28 / 24 | 26 / 24 |
| Olympics | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 29 / 24 |
| Saturday | 28 / 23 |
| West North | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 28 / 24 |
| Saturday | 27 / 24 |
| West Central | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 29 / 24 |
| Saturday | 27 / 23 |
| West South | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 29 / 22 |
| Saturday | 28 / 22 |
| Stevens Pass | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 28 / 24 |
| Saturday | 26 / 23 |
| Snoqualmie Pass | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 29 / 24 |
| Saturday | 27 / 23 |
| East North | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 26 / 19 |
| Saturday | 25 / 19 |
| East Central | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 28 / 22 |
| Saturday | 30 / 21 |
| East South | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 27 / 23 |
| Saturday | 28 / 22 |
| Mt. Hood | 5000' Temperature Forecast (Max / Min) |
|---|---|
| Friday Night | 28 / 24 |
| Saturday | 26 / 24 |
Issued: 2:23 PM PDT Friday, March 31, 2023
Ridgeline Winds (mph)
| Friday Evening | Friday Night | Saturday Morning | Saturday Afternoon | |
|---|---|---|---|---|
| Olympics | SW 15-25 | W 10-20 | W 10-20 | W 5-15 |
| West North | SSW 25-35 | W 15-25 | W 5-15 | W 5-15 |
| West Central | SW 25-35 | W 15-25 | W 10-20 | W 10-20 |
| West South | SW 25-35 | W 15-25 | W 10-20 | W 10-20 |
| Stevens Pass | SW 20-30 | W 20-30 | W 10-20 | W 10-20 |
| Snoqualmie Pass | SW 25-35 | W 20-30 | W 10-20 | W 15-25 |
| East North | SW 15-25 | W 20-30 | W 10-20 | W 5-15 |
| East Central | SW 20-30 | W 20-30 | W 20-30 | W 25-35 |
| East South | W 30-40 | W 25-35 | W 20-30 | W 15-25 |
| Mt. Hood | W 35-50 | W 30-40 | W 25-35 | W 25-35 |
| Olympics | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 15-25 |
| Friday Night | W 10-20 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 5-15 |
| West North | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SSW 25-35 |
| Friday Night | W 15-25 |
| Saturday Morning | W 5-15 |
| Saturday Afternoon | W 5-15 |
| West Central | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 25-35 |
| Friday Night | W 15-25 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 10-20 |
| West South | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 25-35 |
| Friday Night | W 15-25 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 10-20 |
| Stevens Pass | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 20-30 |
| Friday Night | W 20-30 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 10-20 |
| Snoqualmie Pass | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 25-35 |
| Friday Night | W 20-30 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 15-25 |
| East North | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 15-25 |
| Friday Night | W 20-30 |
| Saturday Morning | W 10-20 |
| Saturday Afternoon | W 5-15 |
| East Central | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | SW 20-30 |
| Friday Night | W 20-30 |
| Saturday Morning | W 20-30 |
| Saturday Afternoon | W 25-35 |
| East South | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | W 30-40 |
| Friday Night | W 25-35 |
| Saturday Morning | W 20-30 |
| Saturday Afternoon | W 15-25 |
| Mt. Hood | Ridgeline Winds (mph) |
|---|---|
| Friday Evening | W 35-50 |
| Friday Night | W 30-40 |
| Saturday Morning | W 25-35 |
| Saturday Afternoon | W 25-35 |
Issued: 2:23 PM PDT Friday, March 31, 2023
Extended Weather Synopsis
A broad upper-level trough will control our weather for the beginning of the week. Often it's challenging for the weather models to pick out specific features during these types of patterns, but in general, we should see cold and showery weather. Right now a weak embedded low pressure appears to slide down the inside of the trough Monday afternoon. This will kick off yet another round of slightly heavier showers in the mountains. As it passes and exists, additional short-wave features could maintain precipitation Monday night into Tuesday.
Extended Snow Level (ft)
| Sunday Night | Monday | Monday Night | Tuesday | |
|---|---|---|---|---|
| West North | 500' | 1500' | 1000' | 2000' |
| Snoqualmie Pass | 1000' | 1500' | 1000' | 2000' |
| Mt. Hood | 1000' | 1500' | 1000' | 2000' |
| West North | Elevation |
|---|---|
| Sunday Night | 500' |
| Monday | 1500' |
| Monday Night | 1000' |
| Tuesday | 2000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night | 1000' |
| Monday | 1500' |
| Monday Night | 1000' |
| Tuesday | 2000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night | 1000' |
| Monday | 1500' |
| Monday Night | 1000' |
| Tuesday | 2000' |
Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I Extended Weather
Previous forecast from Mar 31, 2023
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