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 Tuesday
We will start tonight with mostly clear skies after another fine sunny day in the mountains that saw freezing levels generally in the 6500-7000' range. Freezing levels will take their usual nocturnal dip for the central and northern Cascades, but should stay elevated over the Olympics, south Washington Cascades and Mt. Hood.
Sunday will be a transition day as we turn the page to a cooler, wetter spring-time weather pattern. High clouds will begin to stream over the Olympics and northwest Cascades late tonight, eventually becoming a high overcast later in the day. Areas further south should see mild temperatures and mostly sunny skies initially before periods of filtered sunshine begin in the afternoon. Mt. Hood on the southern periphery of the cloud shield will squeeze out the most sun and warmest temperatures. Pre-frontal winds will increase over the Olympics and Mt. Baker area and above Cascade crest level in general Sunday afternoon.
The low pressure system will drop south along the B.C. coastline Sunday with precipitation moving inland slowly Sunday night. The front will pass through the Cascades early Monday morning as the upper level low remains parked off our coast. Steady precipitation will quickly transition to widespread showers Monday afternoon. Monday should be a cool showery day with snow levels hovering around 2500'-3000'. This system should produce generally light new snowfall accumulations with slightly heftier totals possible for the volcanoes through Monday afternoon.
Weather Forecast
Hurricane Ridge
| Saturday Night | Mostly clear with periods of high clouds after midnight. |
| Sunday | Partly sunny with filtered sunshine in the morning with high clouds increasing and becoming overcast in the afternoon. |
Mt. Baker
| Saturday Night | Mostly clear with periods of high clouds after midnight. |
| Sunday | Partly sunny with filtered sunshine in the morning with high clouds increasing and becoming mostly cloudy in the afternoon. |
Washington Pass and Leavenworth
| Saturday Night | Mostly clear with periods of high clouds after midnight. |
| Sunday | Mostly sunny with periods of high clouds in the morning, then filtered sunshine with increasing high clouds in the afternoon. |
Stevens and Snoqualmie Pass
| Saturday Night | Mostly clear with periods of high clouds after midnight. |
| Sunday | Mostly sunny with periods of high clouds in the morning, then filtered sunshine with increasing high clouds in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Saturday Night | Mostly clear. |
| Sunday | Mostly sunny with periods of high clouds in the morning, then filtered sunshine with increasing high clouds in the afternoon. |
Mt. Hood
| Saturday Night | Mostly clear. |
| Sunday | Mostly sunny with increasing high clouds during the day. |
Issued: 1:58 PM PDT Saturday, March 21, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Evening | Freezing Level | 7000' | 6000' | 4500' | 6500' | 6000' | 6500' | 7000' | 7000' |
| Saturday Night | Freezing Level | 7000' | 4500' | 2500' | 5000' | 4500' | 5000' | 6500' | 7000' |
| Sunday Morning | Freezing Level | 7500' | 5000' | 5000' | 6000' | 5000' | 5500' | 7000' | 7500' |
| Sunday Afternoon | Freezing Level | 6000' | 6000' | 7000' | 7500' | 7000' | 7000' | 7500' | 8000' |
| Sunday Evening | Freezing Level | 4000' | 4000' | 4500' | 5500' | 4500' | 4500' | 5500' | 6500' |
| Sunday Night | Snow Level | 2500' | 2500' | 3000' | 4000' | 3000' | 3000' | 3500' | 4000' |
| Monday Morning | Snow Level | 2000' | 2000' | 2000' | 2500' | 2500' | 2500' | 2500' | 2500' |
| Monday Afternoon | Snow Level | 3000' | 3000' | 3500' | 4000' | 3000' | 3000' | 3000' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 7000' |
| Saturday Night |
Freezing Level 7000' |
| Sunday Morning |
Freezing Level 7500' |
| Sunday Afternoon |
Freezing Level 6000' |
| Sunday Evening |
Freezing Level 4000' |
| Sunday Night |
Snow Level 2500' |
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 4500' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 6000' |
| Sunday Evening |
Freezing Level 4000' |
| Sunday Night |
Snow Level 2500' |
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 4500' |
| Saturday Night |
Freezing Level 2500' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 7000' |
| Sunday Evening |
Freezing Level 4500' |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6500' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 6000' |
| Sunday Afternoon |
Freezing Level 7500' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Snow Level 4000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 4000' |
| Stevens Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 4500' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 7000' |
| Sunday Evening |
Freezing Level 4500' |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6500' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 5500' |
| Sunday Afternoon |
Freezing Level 7000' |
| Sunday Evening |
Freezing Level 4500' |
| Sunday Night |
Snow Level 3000' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 7000' |
| Saturday Night |
Freezing Level 6500' |
| Sunday Morning |
Freezing Level 7000' |
| Sunday Afternoon |
Freezing Level 7500' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Snow Level 3500' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 7000' |
| Saturday Night |
Freezing Level 7000' |
| Sunday Morning |
Freezing Level 7500' |
| Sunday Afternoon |
Freezing Level 8000' |
| Sunday Evening |
Freezing Level 6500' |
| Sunday Night |
Snow Level 4000' |
| Monday Morning |
Snow Level 2500' |
| Monday 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
| Saturday Night | Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | LT 0.10 | 0.25 |
| Mt Baker Ski Area | 0 | 0 | LT 0.25 | 0.25 - 0.50 |
| Washington Pass | 0 | 0 | LT 0.10 | LT 0.25 |
| Leavenworth | 0 | 0 | 0 | LT 0.10 |
| Stevens Pass | 0 | 0 | LT 0.10 | 0.25 |
| Snoqualmie Pass | 0 | 0 | LT 0.10 | 0.25 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | 0 | 0 | LT 0.25 |
| Paradise | 0 | 0 | LT 0.10 | 0.25 - 0.50 |
| White Pass | 0 | 0 | 0 | 0.25 |
| Mt Hood Meadows | 0 | 0 | 0 | 0.25 |
| Timberline | 0 | 0 | 0 | 0.25 - 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.25 |
| Tuesday | 0.25 - 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0.25 - 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0.25 - 0.50 |
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: 1:58 PM PDT Saturday, March 21, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Evening | N 0 - 10 | NE 0 - 10 | WNW 5 - 15 | N 5 - 15 | W 0 - 10 |
| Saturday Night | W 0 - 10 | N 0 - 10 | W 0 - 10 | VAR 0 - 10 | VAR 0 - 10 |
| Sunday Morning | SW 5 - 15 | SW 5 - 15 | SW 0 - 10 | SW 0 - 10 | SW 0 - 10 |
| Sunday Afternoon | SW 10 - 20 | S 15 - 25 | SW 5 - 15 | SW 5 - 15 | W 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Evening | N 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Evening | NE 0 - 10 |
| Saturday Night | N 0 - 10 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Evening | WNW 5 - 15 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | SW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Evening | N 5 - 15 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | SW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Saturday Evening | W 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | W 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Evening | N 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Evening | NE 0 - 10 |
| Saturday Night | N 0 - 10 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Evening | WNW 5 - 15 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | SW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Evening | N 5 - 15 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | SW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Evening | W 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | W 5 - 15 |
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 15 - 25 | NNW 20 - 30 | NW 15 - 25 | N 10 - 20 | N 0 - 10 |
| Saturday Night | NW 10 - 20 | NW 10 - 20 | NW 10 - 20 | NW 10 - 20 | NW 5 - 15 |
| Sunday Morning | W 20 - 30 | W 15 - 25 | NW 10 - 20 | NW 10 - 20 | NW 5 - 15 |
| Sunday Afternoon | SW 30 - 40 | SW 30 - 40 | WSW 20 - 30 | WSW 15 - 25 | W 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Evening | N 15 - 25 |
| Saturday Night | NW 10 - 20 |
| Sunday Morning | W 20 - 30 |
| Sunday Afternoon | SW 30 - 40 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Evening | NNW 20 - 30 |
| Saturday Night | NW 10 - 20 |
| Sunday Morning | W 15 - 25 |
| Sunday Afternoon | SW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Evening | NW 15 - 25 |
| Saturday Night | NW 10 - 20 |
| Sunday Morning | NW 10 - 20 |
| Sunday Afternoon | WSW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Evening | N 10 - 20 |
| Saturday Night | NW 10 - 20 |
| Sunday Morning | NW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Evening | N 0 - 10 |
| Saturday Night | NW 5 - 15 |
| Sunday Morning | NW 5 - 15 |
| Sunday 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.
Issued: 1:58 PM PDT Saturday, March 21, 2020
Extended Weather Synopsis for Tuesday night through Tuesday
The upper low will weaken into an open trough Tuesday and slowly exit the region on Wednesday. Daytime showers will kick-off an increase in afternoon showers Tuesday afternoon and to a lesser degree on Wednesday. Tuesday looks like it might have the right combination of instability with sunshine to produce a few thunderstorms. Snow levels will remain cool through the extended period.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Monday Night | Snow Level | 1000' - 2000' | 1000' - 2000' | 1500' - 2500' | |
| Tuesday | Snow Level | 2000' - 3000' | 2000' - 3000' | 2000' - 3000' | |
| Tuesday Night | Snow Level | 1000' - 2000' | 1000' - 2000' | 1000' - 2000' | |
| Wednesday | Snow Level | 2000' - 3000' | 2000' - 3000' | 2000' - 3000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Night |
Snow Level 1000' - 2000' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 1000' - 2000' |
| Wednesday |
Snow Level 2000' - 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Night |
Snow Level 1000' - 2000' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 1000' - 2000' |
| Wednesday |
Snow Level 2000' - 3000' |
| Mt. Hood | Elevation |
|---|---|
| Monday Night |
Snow Level 1500' - 2500' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 1000' - 2000' |
| Wednesday |
Snow Level 2000' - 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.
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 21, 2020
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.