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 Monday
The deep upper trough that brought upslope snows across the east slopes of the Cascades and to the Mt. Hood area yesterday continues to dig off the southern California coast while upper level ridging builds into northern British Columbia.
The stratus deck currently in place from about I-90 and south along the east slopes of the Cascades down to Mt. Hood will begin to clear as the trough continues to pull away from our region tonight and Friday.
A bright sunny day will grace the area tomorrow with temperatures moderating a bit and no significant winds forecast.
The storm track will stay to our south on Saturday, with a Pacific frontal system approaching the Oregon/California coastline while we remain dry. We'll have to see if cloud cover increases ahead of this frontal system for the east slopes of the Washington Cascades and the Mt. Hood area as winds turn easterly once again on Saturday.
Happy Thanksgiving from NWAC!
Weather Forecast
Hurricane Ridge
| Thursday Night | Mostly clear. |
| Friday | Sunny. |
Mt. Baker
| Thursday Night | Mostly clear. |
| Friday | Sunny. |
Washington Pass and Leavenworth
| Thursday Night | Mostly clear and cold. |
| Friday | Mostly sunny. |
Stevens and Snoqualmie Pass
| Thursday Night | Mostly clear. |
| Friday | Sunny. |
Mt. Rainier, Crystal and White Pass
| Thursday Night | Partly to mostly cloudy, becoming mostly clear overnight. |
| Friday | Sunny |
Mt. Hood
| Thursday Night | Cloudy with occasional snow flurries, becoming partly cloudy after midnight. |
| Friday | Mostly sunny. |
Issued: 2:28 PM PST Thursday, November 28, 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 * | 1500' | 1500' | 500' | 1000' | 1000' | 1500' | 1500' | 500' |
| Thursday Night | Freezing Level * | 1000' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Friday Morning | Freezing Level * | 1000' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Friday Afternoon | Freezing Level * | 2500' | 2000' | 1500' | 1500' | 2000' | 2500' | 3000' | 2500' |
| Friday Evening | Freezing Level * | 2000' | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 1500' |
| Friday Night | Freezing Level * | 2000' | 1500' | 1000' | 1000' | 1000' | 1500' | 1500' | 1500' |
| Saturday Morning | Freezing Level * | 2000' | 1500' | 1000' | 1000' | 1000' | 1000' | 1500' | 1500' |
| Saturday Afternoon | Freezing Level * | 3000' | 3000' | 1500' | 100' | 1500' | 2000' | 2500' | 1500' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 1000' (Easterly Flow *) |
| Friday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 100' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 500' (Easterly Flow *) |
| Thursday Night |
Freezing Level 0' (Easterly Flow *) |
| Friday Morning |
Freezing Level 0' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
* 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 | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 | 0 |
| Washington Pass | 0 | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 | 0 |
| 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 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 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: 2:28 PM PST Thursday, November 28, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Evening | E 0 - 10 | E 0 - 10 | E 5 - 15 | E 5 - 15 | E 10 - 20 |
| Thursday Night | NE 0 - 10 | NE 0 - 10 | E 5 - 15 | E 5 - 15 | E 10 - 20 |
| Friday Morning | NE 0 - 10 | NE 0 - 10 | E 0 - 10 | NE 0 - 10 | E 5 - 15 |
| Friday Afternoon | VAR 0 - 10 | VAR 0 - 10 | E 0 - 10 | VAR 0 - 10 | SE 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening | E 0 - 10 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening | E 0 - 10 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening | E 5 - 15 |
| Thursday Night | E 5 - 15 |
| Friday Morning | E 0 - 10 |
| Friday Afternoon | E 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Evening | E 5 - 15 |
| Thursday Night | E 5 - 15 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening | E 10 - 20 |
| Thursday Night | E 10 - 20 |
| Friday Morning | E 5 - 15 |
| Friday Afternoon | SE 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Evening | E 0 - 10 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | E 0 - 10 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | E 5 - 15 |
| Thursday Night | E 5 - 15 |
| Friday Morning | E 0 - 10 |
| Friday Afternoon | E 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | E 5 - 15 |
| Thursday Night | E 5 - 15 |
| Friday Morning | NE 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | E 10 - 20 |
| Thursday Night | E 10 - 20 |
| Friday Morning | E 5 - 15 |
| Friday Afternoon | SE 0 - 10 |
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 | W 0 - 10 | W 0 - 10 | SE 0 - 10 | SE 5 - 15 | SE 10 - 20 |
| Thursday Night | NW 0 - 10 | NW 0 - 10 | NE 0 - 10 | NE 0 - 10 | E 10 - 20 |
| Friday Morning | VAR 0 - 10 | VAR 0 - 10 | NW 0 - 10 | N 0 - 10 | NE 5 - 15 |
| Friday Afternoon | VAR 0 - 10 | VAR 0 - 10 | NW 0 - 10 | NW 0 - 10 | N 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | NW 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | NW 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | SE 0 - 10 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | NW 0 - 10 |
| Friday Afternoon | NW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | SE 5 - 15 |
| Thursday Night | NE 0 - 10 |
| Friday Morning | N 0 - 10 |
| Friday Afternoon | NW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | SE 10 - 20 |
| Thursday Night | E 10 - 20 |
| Friday Morning | NE 5 - 15 |
| Friday Afternoon | N 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.
Issued: 2:28 PM PST Thursday, November 28, 2019
Extended Weather Synopsis for Monday night through Monday
The aforementioned frontal system will lift north in southerly flow late Saturday night and Sunday. Precipitation looks very light and generally insignificant as the frontal boundary shears apart. Our region will flop back to dry weather as we remain between a weak upper level low off the OR/CA coast and a frontal system aimed well north into northern British Columbia on Monday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday Night | Snow Level | 0' - 500' | 0' - 500' | 0' - 500' | * |
| Sunday | Snow Level | 500' - 1000' | 0' - 1000' | 1000' - 2000' | * |
| Sunday Night | Freezing Level | 2000' - 3000' | 2000' - 3000' | 2500' - 3500' | * |
| Monday | Freezing Level | 3000' - 4000' | 3500' - 4500' | 4500' - 5500' | * |
| Mt. Baker | Elevation |
|---|---|
| Saturday Night |
Snow Level 0' - 500' (Easterly Flow *) |
| Sunday |
Snow Level 500' - 1000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' - 3000' (Easterly Flow *) |
| Monday |
Freezing Level 3000' - 4000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Night |
Snow Level 0' - 500' (Easterly Flow *) |
| Sunday |
Snow Level 0' - 1000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' - 3000' (Easterly Flow *) |
| Monday |
Freezing Level 3500' - 4500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Night |
Snow Level 0' - 500' (Easterly Flow *) |
| Sunday |
Snow Level 1000' - 2000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Monday |
Freezing Level 4500' - 5500' (Easterly Flow *) |
* 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 27, 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.