Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Saturday
A strong ridge of high pressure sits offshore on Sunday bringing a sunny day to our region with dry northerly flow aloft and generally light winds at the surface. Clear skies overnight allowed temperatures to drop into the 10's and 20's at most NWAC stations, leading to a cool start to the day on Sunday. Temperatures should moderate with diurnal warming as freezing levels topping out in the 3500-4500 ft range in the Washington Cascades and the 5500 ft range at Mt Hood. With the strong high pressure, westerly gradients through the Passes increase slightly in the afternoon and evening hours, bringing some 10-20 mph winds through Snoqualmie Pass before easing up early Monday morning. The clear skies with a few thin, high clouds continue Sunday night with sunny weather expected again on Monday.
An inversion should develop in many areas Sunday night and remains into Monday morning with the potential for some slightly above freezing temperatures in the 5000-7000 ft range with below-freezing temperatures below 5000 ft. Diurnal warming heats up the lower atmosphere by Monday afternoon as the mid-levels of the atmosphere cool. Overall, Monday should be slightly warmer than Sunday with light winds.
Weather Forecast
Hurricane Ridge
| Sunday | Sunny with light winds. Some high clouds may bring filtered sunshine in the afternoon. |
Mt. Baker
| Sunday | Sunny with light winds. Some high clouds may bring filtered sunshine in the afternoon. |
Washington Pass and Leavenworth
| Sunday | Sunny with light winds. Some high clouds may bring filtered sunshine in the afternoon. |
Stevens and Snoqualmie Pass
| Sunday | Sunny. Some high clouds may bring filtered sunshine in the afternoon. West winds 0-10 mph, increasing to 10-20 mph in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Sunday | Sunny with light winds. |
Mt. Hood
| Sunday | Sunny with light winds. |
Issued: 7:01 AM PST Sunday, February 9, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Freezing Level | 4000' | 2500' | 3000' | 3000' | 3000' | 3000' | 4000' | 4000' |
| Sunday Afternoon | Freezing Level | 4000' | 3000' | 3500' | 4000' | 3500' | 3500' | 4500' | 5500' |
| Sunday Evening | Freezing Level | 2500' | 500' | 1000' | 1500' | 1500' | 1500' | 2000' | 1500' |
| Sunday Night | Freezing Level | 2500' | 0' | 1000' | 1500' | 1000' | 1000' | 2000' | 1500' |
| Monday Morning | Freezing Level | 4000' | 3500' | 5000' | 4500' | 4500' | 4000' | 5000' | 4500' |
| Monday Afternoon | Freezing Level | 6000' | 4000' | 6000' | 5000' | 5000' | 5500' | 6000' | 8000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 4000' |
| Sunday Afternoon |
Freezing Level 4000' |
| Sunday Evening |
Freezing Level 2500' |
| Sunday Night |
Freezing Level 2500' |
| Monday Morning |
Freezing Level 4000' |
| Monday Afternoon |
Freezing Level 6000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 2500' |
| Sunday Afternoon |
Freezing Level 3000' |
| Sunday Evening |
Freezing Level 500' |
| Sunday Night |
Freezing Level 0' |
| Monday Morning |
Freezing Level 3500' |
| Monday Afternoon |
Freezing Level 4000' |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Freezing Level 3500' |
| Sunday Evening |
Freezing Level 1000' |
| Sunday Night |
Freezing Level 1000' |
| Monday Morning |
Freezing Level 5000' |
| Monday Afternoon |
Freezing Level 6000' |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Freezing Level 4000' |
| Sunday Evening |
Freezing Level 1500' |
| Sunday Night |
Freezing Level 1500' |
| Monday Morning |
Freezing Level 4500' |
| Monday Afternoon |
Freezing Level 5000' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Freezing Level 3500' |
| Sunday Evening |
Freezing Level 1500' |
| Sunday Night |
Freezing Level 1000' |
| Monday Morning |
Freezing Level 4500' |
| Monday Afternoon |
Freezing Level 5000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Freezing Level 3500' |
| Sunday Evening |
Freezing Level 1500' |
| Sunday Night |
Freezing Level 1000' |
| Monday Morning |
Freezing Level 4000' |
| Monday Afternoon |
Freezing Level 5500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 4000' |
| Sunday Afternoon |
Freezing Level 4500' |
| Sunday Evening |
Freezing Level 2000' |
| Sunday Night |
Freezing Level 2000' |
| Monday Morning |
Freezing Level 5000' |
| Monday Afternoon |
Freezing Level 6000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 4000' |
| Sunday Afternoon |
Freezing Level 5500' |
| Sunday Evening |
Freezing Level 1500' |
| Sunday Night |
Freezing Level 1500' |
| Monday Morning |
Freezing Level 4500' |
| Monday Afternoon |
Freezing Level 8000' |
* 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
| Sunday | Sunday Night | Saturday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 |
| Washington Pass | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 |
| Mission Ridge | 0 | 0 | 0 |
| Crystal Mt | 0 | 0 | 0 |
| Paradise | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 |
| Mt Hood Meadows | 0 | 0 | 0 |
| Timberline | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Saturday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday 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: 7:01 AM PST Sunday, February 9, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | NNW 0 - 10 | W 0 - 10 | WNW 5 - 15 | WNW 0 - 10 | VAR 0 - 10 |
| Sunday Afternoon | WNW 0 - 10 | W 0 - 10 | WNW 5 - 15 | WNW 0 - 10 | W 5 - 15 |
| Sunday Evening | N 5 - 15 | WSW 0 - 10 | WNW 5 - 15 | NW 5 - 15 | WNW 5 - 15 |
| Sunday Night | N 5 - 15 | NE 0 - 10 | W 0 - 10 | --- 0 - 10 | WSW 0 - 10 |
| Monday Morning | N 5 - 15 | ENE 0 - 10 | E 0 - 10 | ENE 0 - 10 | E 0 - 10 |
| Monday Afternoon | NNW 0 - 10 | E 0 - 10 | SE 0 - 10 | SSE 0 - 10 | E 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | NNW 0 - 10 |
| Sunday Afternoon | WNW 0 - 10 |
| Sunday Evening | N 5 - 15 |
| Sunday Night | N 5 - 15 |
| Monday Morning | N 5 - 15 |
| Monday Afternoon | NNW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | W 0 - 10 |
| Sunday Afternoon | W 0 - 10 |
| Sunday Evening | WSW 0 - 10 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | ENE 0 - 10 |
| Monday Afternoon | E 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | WNW 5 - 15 |
| Sunday Afternoon | WNW 5 - 15 |
| Sunday Evening | WNW 5 - 15 |
| Sunday Night | W 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | WNW 0 - 10 |
| Sunday Afternoon | WNW 0 - 10 |
| Sunday Evening | NW 5 - 15 |
| Sunday Night | --- 0 - 10 |
| Monday Morning | ENE 0 - 10 |
| Monday Afternoon | SSE 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | VAR 0 - 10 |
| Sunday Afternoon | W 5 - 15 |
| Sunday Evening | WNW 5 - 15 |
| Sunday Night | WSW 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | E 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | NNW 0 - 10 |
| Sunday Afternoon | WNW 0 - 10 |
| Sunday Evening | N 5 - 15 |
| Sunday Night | N 5 - 15 |
| Monday Morning | N 5 - 15 |
| Monday Afternoon | NNW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | W 0 - 10 |
| Sunday Afternoon | W 0 - 10 |
| Sunday Evening | WSW 0 - 10 |
| Sunday Night | NE 0 - 10 |
| Monday Morning | ENE 0 - 10 |
| Monday Afternoon | E 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | WNW 5 - 15 |
| Sunday Afternoon | WNW 5 - 15 |
| Sunday Evening | WNW 5 - 15 |
| Sunday Night | W 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | WNW 0 - 10 |
| Sunday Afternoon | WNW 0 - 10 |
| Sunday Evening | NW 5 - 15 |
| Sunday Night | --- 0 - 10 |
| Monday Morning | ENE 0 - 10 |
| Monday Afternoon | SSE 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | VAR 0 - 10 |
| Sunday Afternoon | W 5 - 15 |
| Sunday Evening | WNW 5 - 15 |
| Sunday Night | WSW 0 - 10 |
| Monday Morning | E 0 - 10 |
| Monday Afternoon | E 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 | |
|---|---|---|---|---|---|
| Sunday Morning | NNW 15 - 25 | NNW 15 - 25 | NNW 25 - 35 | NNW 20 - 30 | N 25 - 35 |
| Sunday Afternoon | NW 15 - 25 | NW 20 - 30 | NNW 20 - 30 | NNW 20 - 30 | N 15 - 25 |
| Sunday Evening | NW 20 - 30 | NW 20 - 30 | NNW 25 - 35 | NNW 20 - 30 | N 15 - 25 |
| Sunday Night | NNW 20 - 30 | NNW 20 - 30 | NNW 25 - 35 | NNW 25 - 35 | NNW 20 - 30 |
| Monday Morning | N 10 - 20 | NNW 25 - 35 | NNW 10 - 20 | NNW 10 - 20 | N 10 - 20 |
| Monday Afternoon | NW 10 - 20 | WNW 10 - 20 | NNW 10 - 20 | NW 10 - 20 | NNW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | NNW 15 - 25 |
| Sunday Afternoon | NW 15 - 25 |
| Sunday Evening | NW 20 - 30 |
| Sunday Night | NNW 20 - 30 |
| Monday Morning | N 10 - 20 |
| Monday Afternoon | NW 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | NNW 15 - 25 |
| Sunday Afternoon | NW 20 - 30 |
| Sunday Evening | NW 20 - 30 |
| Sunday Night | NNW 20 - 30 |
| Monday Morning | NNW 25 - 35 |
| Monday Afternoon | WNW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | NNW 25 - 35 |
| Sunday Afternoon | NNW 20 - 30 |
| Sunday Evening | NNW 25 - 35 |
| Sunday Night | NNW 25 - 35 |
| Monday Morning | NNW 10 - 20 |
| Monday Afternoon | NNW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | NNW 20 - 30 |
| Sunday Afternoon | NNW 20 - 30 |
| Sunday Evening | NNW 20 - 30 |
| Sunday Night | NNW 25 - 35 |
| Monday Morning | NNW 10 - 20 |
| Monday Afternoon | NW 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | N 25 - 35 |
| Sunday Afternoon | N 15 - 25 |
| Sunday Evening | N 15 - 25 |
| Sunday Night | NNW 20 - 30 |
| Monday Morning | N 10 - 20 |
| Monday Afternoon | NNW 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Feb 8, 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.