Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Monday & Friday
The Pacific Northwest is in for a day of cool freezing levels and fair weather with an upper level shortwave ridge currently upstream and moving toward the region in northerly flow aloft. We are on the backside of the very broad upper trough that is carved out over the southwest U.S.
While low level clouds should remain trapped along the west slopes of the Cascades and Mt. Hood today due to upper level subsidence trapping low level moisture, there should be a fair bit of sunbreaks also mixed in. Sunnier skies can be expected for the Olympics and east slopes of the Cascades.
A quick moving weather system in NW flow aloft will quickly approach the region Monday night, with light snow developing late Tuesday morning for most areas. While light snowfall will increase during the day, moderate snowfall from this system looks likely to hold off until late Tuesday afternoon and evening.
Weather Forecast
Hurricane Ridge
| Monday | Partly to mostly sunny, becoming mostly cloudy in the afternoon with the chance of light snow showers. |
Mt. Baker
| Monday | Partly to mostly sunny, becoming mostly cloudy in the afternoon with the chance of light snow showers. |
Washington Pass and Leavenworth
| Monday | Partly to mostly sunny. Becoming mostly cloudy higher terrain in the afternoon. |
Stevens and Snoqualmie Pass
| Monday | Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers. Light and variable winds in the Passes becoming west in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Monday | Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers. |
Mt. Hood
| Monday | Cloudy in the morning, becoming mostly cloudy with sunbreaks late morning. Chance of light snow showers. |
Issued: 6:57 AM PST Monday, February 18, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Morning | Freezing Level | 1500' | 0' | 0' | 0' | 500' | 500' | 1000' | 1500' |
| Monday Afternoon | Freezing Level | 1500' | 1500' | 1500' | 2500' | 2000' | 2000' | 3000' | 3000' |
| Monday Evening | Freezing Level | 2000' | 1000' | 1000' | 1000' | 1500' | 1500' | 2000' | 2000' |
| Monday Night | Freezing Level | 1000' | 0' | 0' | 0' | 500' | 500' | 1000' | 1000' |
| Tuesday Morning | Snow Level | 500' | 0' | 0' | 0' | 500' | 500' | 500' | 1000' |
| Tuesday Afternoon | Snow Level | 2000' | 1500' | 1000' | 1000' | 1500' | 1500' | 2000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Freezing Level 1500' |
| Monday Afternoon |
Freezing Level 1500' |
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Freezing Level 0' |
| Monday Afternoon |
Freezing Level 1500' |
| Monday Evening |
Freezing Level 1000' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1500' |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 0' |
| Monday Afternoon |
Freezing Level 1500' |
| Monday Evening |
Freezing Level 1000' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1000' |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Freezing Level 0' |
| Monday Afternoon |
Freezing Level 2500' |
| Monday Evening |
Freezing Level 1000' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Snow Level 0' |
| Tuesday Afternoon |
Snow Level 1000' |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 500' |
| Monday Afternoon |
Freezing Level 2000' |
| Monday Evening |
Freezing Level 1500' |
| Monday Night |
Freezing Level 500' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 500' |
| Monday Afternoon |
Freezing Level 2000' |
| Monday Evening |
Freezing Level 1500' |
| Monday Night |
Freezing Level 500' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 1500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Freezing Level 1000' |
| Monday Afternoon |
Freezing Level 3000' |
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Snow Level 500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Freezing Level 1500' |
| Monday Afternoon |
Freezing Level 3000' |
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Snow Level 1000' |
| Tuesday Afternoon |
Snow Level 2000' |
* 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
| Monday | Monday Night | Friday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | LT 0.25 |
| Mt Baker Ski Area | 0 | 0 | 0.25 |
| Washington Pass | 0 | 0 | LT 0.10 |
| Leavenworth | 0 | 0 | LT 0.10 |
| Stevens Pass | 0 | 0 | LT 0.25 |
| Snoqualmie Pass | 0 | 0 | LT 0.25 |
| Mission Ridge | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | 0 | LT 0.10 |
| Paradise | 0 | 0 | LT 0.10 |
| White Pass | 0 | 0 | LT 0.10 |
| Mt Hood Meadows | 0 | 0 | LT 0.10 |
| Timberline | 0 | 0 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0 |
| Friday | LT 0.10 |
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: 6:57 AM PST Monday, February 18, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | NW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 | NW 0 - 10 |
| Monday Afternoon | W 0 - 10 | W 0 - 10 | W 5 - 15 | W 5 - 15 | WNW 10 - 20 |
| Monday Evening | W 0 - 10 | W 0 - 10 | W 5 - 15 | W 0 - 10 | WNW 10 - 20 |
| Monday Night | W 0 - 10 | SW 0 - 10 | W 5 - 15 | W 0 - 10 | W 10 - 20 |
| Tuesday Morning | W 10 - 20 | SW 5 - 15 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Tuesday Afternoon | W 15 - 25 | SW 10 - 20 | WSW 10 - 20 | W 10 - 20 | W 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | NW 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Evening | W 0 - 10 |
| Monday Night | SW 0 - 10 |
| Tuesday Morning | SW 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Monday Evening | W 5 - 15 |
| Monday Night | W 5 - 15 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | WSW 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | W 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | NW 0 - 10 |
| Monday Afternoon | WNW 10 - 20 |
| Monday Evening | WNW 10 - 20 |
| Monday Night | W 10 - 20 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | NW 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 0 - 10 |
| Monday Evening | W 0 - 10 |
| Monday Night | SW 0 - 10 |
| Tuesday Morning | SW 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Monday Evening | W 5 - 15 |
| Monday Night | W 5 - 15 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | WSW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | W 5 - 15 |
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | W 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | NW 0 - 10 |
| Monday Afternoon | WNW 10 - 20 |
| Monday Evening | WNW 10 - 20 |
| Monday Night | W 10 - 20 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 15 - 25 |
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 | |
|---|---|---|---|---|---|
| Monday Morning | NW 10 - 20 | NW 15 - 25 | NW 20 - 30 | NW 20 - 30 | NW 20 - 30 |
| Monday Afternoon | NW 15 - 25 | NW 20 - 30 | NW 20 - 30 | NW 20 - 30 | NW 20 - 30 |
| Monday Evening | NW 10 - 20 | NW 20 - 30 | NW 20 - 30 | NW 20 - 30 | NW 20 - 30 |
| Monday Night | WSW 10 - 20 | NW 10 - 20 | NW 25 - 35 | NW 25 - 35 | NW 20 - 30 |
| Tuesday Morning | W 10 - 20 | W 10 - 20 | NW 25 - 35 | NW 20 - 30 | NW 30 - 40 |
| Tuesday Afternoon | W 20 - 30 | W 20 - 30 | WNW 30 - 40 | W 25 - 35 | WNW 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | NW 10 - 20 |
| Monday Afternoon | NW 15 - 25 |
| Monday Evening | NW 10 - 20 |
| Monday Night | WSW 10 - 20 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | NW 15 - 25 |
| Monday Afternoon | NW 20 - 30 |
| Monday Evening | NW 20 - 30 |
| Monday Night | NW 10 - 20 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | W 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | NW 20 - 30 |
| Monday Afternoon | NW 20 - 30 |
| Monday Evening | NW 20 - 30 |
| Monday Night | NW 25 - 35 |
| Tuesday Morning | NW 25 - 35 |
| Tuesday Afternoon | WNW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | NW 20 - 30 |
| Monday Afternoon | NW 20 - 30 |
| Monday Evening | NW 20 - 30 |
| Monday Night | NW 25 - 35 |
| Tuesday Morning | NW 20 - 30 |
| Tuesday Afternoon | W 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | NW 20 - 30 |
| Monday Afternoon | NW 20 - 30 |
| Monday Evening | NW 20 - 30 |
| Monday Night | NW 20 - 30 |
| Tuesday Morning | NW 30 - 40 |
| Tuesday Afternoon | WNW 30 - 40 |
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 17, 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.