Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Thursday night through Saturday
A high-pressure ridge hangs on over the region Thursday night and pushes south of our region on Friday as a very weak shortwave trough moves over the area, bringing wispy clouds and very slight cooling. Mild (and in many cases above freezing) mountain temperatures should continue Thursday night through Friday night, with valley inversions likely during the overnight hours, but little in the way of fog.
The dry weather pattern should begin to break down late Friday night as a frontal system aimed at British Columbia brings light rain and high elevation snow initially to the North Cascades. Waves of moisture on a westerly flow will continue to impact British Columbia on Saturday with increasing, but still light rain and high elevation snow spreading more broadly across northern portions of Washington State as snow levels gradually begin lowering.
Weather Forecast
Hurricane Ridge
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. |
| Friday | Sunny and mild. |
Mt. Baker
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. |
| Friday | Sunny and mild. |
Washington Pass and Leavenworth
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. |
| Friday | Sunny and mild. |
Stevens and Snoqualmie Pass
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. Light east winds at Pass level switching westerly after midnight. |
| Friday | Sunny and mild. |
Mt. Rainier, Crystal and White Pass
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. |
| Friday | Sunny and mild. |
Mt. Hood
| Thursday Night | Mostly clear with mild temperatures aloft and inversions likely in valleys or lower-elevation locations. |
| Friday | Sunny and mild. |
Issued: 2:46 PM PST Thursday, November 21, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Evening | Freezing Level * | 10500' | 10500' | 11000' | 11000' | 11000' | 11500' | 11500' | 11500' |
| Thursday Night | Freezing Level | 8000' | 8000' | 9000' | 9000' | 9000' | 9500' | 9500' | 10000' |
| Friday Morning | Freezing Level | 8000' | 7500' | 8500' | 8500' | 8500' | 8500' | 8500' | 10000' |
| Friday Afternoon | Freezing Level | 8500' | 8500' | 8500' | 10000' | 9000' | 9000' | 9500' | 9500' |
| Friday Evening | Freezing Level | 8500' | 7500' | 8500' | 9500' | 8500' | 9000' | 9000' | 10000' |
| Friday Night | Snow Level | 7000' | 5000' | 7500' | 9000' | 8500' | 8500' | 8500' | 9500' |
| Saturday Morning | Snow Level | 7000' | 4500' | 5500' | 7500' | 6500' | 7000' | 7500' | 9500' |
| Saturday Afternoon | Snow Level | 7000' | 5000' | 5500' | 6500' | 6000' | 6500' | 7000' | 9500' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 10500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 8000' |
| Friday Afternoon |
Freezing Level 8500' |
| Friday Evening |
Freezing Level 8500' |
| Friday Night |
Snow Level 7000' |
| Saturday Morning |
Snow Level 7000' |
| Saturday Afternoon |
Snow Level 7000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 10500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 7500' |
| Friday Afternoon |
Freezing Level 8500' |
| Friday Evening |
Freezing Level 7500' |
| Friday Night |
Snow Level 5000' |
| Saturday Morning |
Snow Level 4500' |
| Saturday Afternoon |
Snow Level 5000' |
| Washington Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11000' (Easterly Flow *) |
| Thursday Night |
Freezing Level 9000' |
| Friday Morning |
Freezing Level 8500' |
| Friday Afternoon |
Freezing Level 8500' |
| Friday Evening |
Freezing Level 8500' |
| Friday Night |
Snow Level 7500' |
| Saturday Morning |
Snow Level 5500' |
| Saturday Afternoon |
Snow Level 5500' |
| Leavenworth | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11000' (Easterly Flow *) |
| Thursday Night |
Freezing Level 9000' |
| Friday Morning |
Freezing Level 8500' |
| Friday Afternoon |
Freezing Level 10000' |
| Friday Evening |
Freezing Level 9500' |
| Friday Night |
Snow Level 9000' |
| Saturday Morning |
Snow Level 7500' |
| Saturday Afternoon |
Snow Level 6500' |
| Stevens Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11000' (Easterly Flow *) |
| Thursday Night |
Freezing Level 9000' |
| Friday Morning |
Freezing Level 8500' |
| Friday Afternoon |
Freezing Level 9000' |
| Friday Evening |
Freezing Level 8500' |
| Friday Night |
Snow Level 8500' |
| Saturday Morning |
Snow Level 6500' |
| Saturday Afternoon |
Snow Level 6000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 9500' |
| Friday Morning |
Freezing Level 8500' |
| Friday Afternoon |
Freezing Level 9000' |
| Friday Evening |
Freezing Level 9000' |
| Friday Night |
Snow Level 8500' |
| Saturday Morning |
Snow Level 7000' |
| Saturday Afternoon |
Snow Level 6500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 9500' |
| Friday Morning |
Freezing Level 8500' |
| Friday Afternoon |
Freezing Level 9500' |
| Friday Evening |
Freezing Level 9000' |
| Friday Night |
Snow Level 8500' |
| Saturday Morning |
Snow Level 7500' |
| Saturday Afternoon |
Snow Level 7000' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 11500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 10000' |
| Friday Morning |
Freezing Level 10000' |
| Friday Afternoon |
Freezing Level 9500' |
| Friday Evening |
Freezing Level 10000' |
| Friday Night |
Snow Level 9500' |
| Saturday Morning |
Snow Level 9500' |
| Saturday Afternoon |
Snow Level 9500' |
* 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
| Thursday Night | Saturday | Saturday Night | Saturday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | LT 0.10 |
| Mt Baker Ski Area | 0 | 0 | LT 0.10 | 0.25 |
| Washington Pass | 0 | 0 | 0 | LT 0.25 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 | LT 0.10 |
| Snoqualmie Pass | 0 | 0 | 0 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 | 0 |
| Crystal Mt | 0 | 0 | 0 | 0 |
| Paradise | 0 | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 | 0 |
| Mt Hood Meadows | 0 | 0 | 0 | 0 |
| Timberline | 0 | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | LT 0.10 |
| Saturday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| 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: 2:46 PM PST Thursday, November 21, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Evening | W 5 - 15 | SW 5 - 15 | VAR 0 - 10 | VAR 0 - 10 | S 5 - 15 |
| Thursday Night | W 5 - 15 | SW 5 - 15 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Friday Morning | W 5 - 15 | WSW 5 - 15 | WNW 5 - 15 | WNW 0 - 10 | W 10 - 20 |
| Friday Afternoon | W 10 - 20 | WSW 5 - 15 | NW 5 - 15 | WNW 5 - 15 | W 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening | SW 5 - 15 |
| Thursday Night | SW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening | VAR 0 - 10 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WNW 5 - 15 |
| Friday Afternoon | NW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Evening | VAR 0 - 10 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WNW 0 - 10 |
| Friday Afternoon | WNW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening | S 5 - 15 |
| Thursday Night | W 10 - 20 |
| Friday Morning | W 10 - 20 |
| Friday Afternoon | W 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | SW 5 - 15 |
| Thursday Night | SW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | VAR 0 - 10 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WNW 5 - 15 |
| Friday Afternoon | NW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | VAR 0 - 10 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WNW 0 - 10 |
| Friday Afternoon | WNW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | S 5 - 15 |
| Thursday Night | W 10 - 20 |
| Friday Morning | W 10 - 20 |
| Friday 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 | |
|---|---|---|---|---|---|
| Thursday Evening | SW 15 - 25 | SW 15 - 25 | WSW 15 - 25 | WSW 10 - 20 | VAR 0 - 10 |
| Thursday Night | WSW 25 - 35 | WSW 25 - 35 | WSW 30 - 40 | WSW 25 - 35 | WSW 10 - 20 |
| Friday Morning | NW 20 - 30 | WNW 15 - 25 | NNW 25 - 35 | NW 20 - 30 | NW 15 - 25 |
| Friday Afternoon | WNW 25 - 35 | WNW 20 - 30 | NW 25 - 35 | NNW 15 - 25 | NW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | SW 15 - 25 |
| Thursday Night | WSW 25 - 35 |
| Friday Morning | NW 20 - 30 |
| Friday Afternoon | WNW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Evening | SW 15 - 25 |
| Thursday Night | WSW 25 - 35 |
| Friday Morning | WNW 15 - 25 |
| Friday Afternoon | WNW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | WSW 15 - 25 |
| Thursday Night | WSW 30 - 40 |
| Friday Morning | NNW 25 - 35 |
| Friday Afternoon | NW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | WSW 25 - 35 |
| Friday Morning | NW 20 - 30 |
| Friday Afternoon | NNW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | VAR 0 - 10 |
| Thursday Night | WSW 10 - 20 |
| Friday Morning | NW 15 - 25 |
| Friday Afternoon | NW 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: 2:46 PM PST Thursday, November 21, 2019
Extended Weather Synopsis for Saturday night through Saturday
Saturday night, a frontal system approaches and spreads increasing light to moderate rain and snow and strong winds across Washington State as snow levels continue to gradually lower.
The frontal system moves to our east early Sunday, leaving in its wake light rain and snow showers as significant cooling brings snow levels to Snoqualmie Pass level by Sunday night. The showers activity arrives in pulses of energy that are difficult to time - a pattern is likely to continue through the day on Monday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday Night | Snow Level | 5000' - 6000' | 5500' - 6500' | 8000' - 9000' | |
| Sunday | Snow Level | 3000' - 4000' | 3500' - 5500' | 5500' - 7500' | |
| Sunday Night | Snow Level | 2000' - 3000' | 2500' - 3500' | 3000' - 4000' | |
| Monday | Snow Level | 1500' - 2500' | 2000' - 3000' | 2500' - 3500' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Night |
Snow Level 5000' - 6000' |
| Sunday |
Snow Level 3000' - 4000' |
| Sunday Night |
Snow Level 2000' - 3000' |
| Monday |
Snow Level 1500' - 2500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Night |
Snow Level 5500' - 6500' |
| Sunday |
Snow Level 3500' - 5500' |
| Sunday Night |
Snow Level 2500' - 3500' |
| Monday |
Snow Level 2000' - 3000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Night |
Snow Level 8000' - 9000' |
| Sunday |
Snow Level 5500' - 7500' |
| Sunday Night |
Snow Level 3000' - 4000' |
| Monday |
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 Nov 20, 2019
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.