Issued: 6:58 AM PST Monday, December 23, 2019
by Dennis D'Amico

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

Weather Synopsis for Monday & Saturday

A weak upper level trough over the region this morning will slide east with upper level ridging building during the afternoon. Light snow associated with the upper level feature will come to an end this morning but scattered light snow showers should stick around for the west slopes of the Cascades and Mt. Hood through the afternoon. Even though there's a drying trend aloft, clouds should stay in place for much of the west slopes of the Cascades through the daylight hours. There should be more sunbreaks along the east slopes of the Cascades, close the Candian border and over the Olympics today. 

The weather pattern is fairly quiet through Tuesday. Weak upper level ridging will quickly move over our region tonight tomorrow. A weak Pacific frontal system should reach the Washington/Oregon coast by late Tuesday afternoon. This system will spread clouds inland during the afternoon.  

Weather Forecast

Hurricane Ridge
Mt. Baker
Washington Pass and Leavenworth
Stevens and Snoqualmie Pass
Mt. Rainier, Crystal and White Pass
Mt. Hood

Snow/Freezing Level (ft)

Hurricane Ridge Mt. Baker Washington Pass Leavenworth Stevens Pass Snoqualmie Pass Mt. Rainier, Crystal & White Pass Mt. Hood
Monday Morning Snow Level 2500' 2000' 2500' 2500' 2500' 2500' 3000' 3500'
Monday Afternoon Snow Level 2000' 2000' 2000' 3000' 2500' 2500' 2500' 3000'
Monday Evening Freezing Level 1500' 1500' 1500' 2000' 2000' 2000' 2000' 2500'
Monday Night Freezing Level 1500' 1000' 0' 1000' 1000' 1000' 1000' 1500'
Tuesday Morning Freezing Level * 1500' 1000' 0' 1000' 1000' 1000' 1000' 1500'
Hurricane Ridge Elevation
Monday Morning Snow Level
2500'
Monday Afternoon Snow Level
2000'
Monday Evening Freezing Level
1500'
Monday Night Freezing Level
1500'
Tuesday Morning Freezing Level
1500'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
3000'
(Easterly Flow *)
Mt. Baker Elevation
Monday Morning Snow Level
2000'
Monday Afternoon Snow Level
2000'
Monday Evening Freezing Level
1500'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
1500'
(Easterly Flow *)
Washington Pass Elevation
Monday Morning Snow Level
2500'
Monday Afternoon Snow Level
2000'
Monday Evening Freezing Level
1500'
Monday Night Freezing Level
0'
Tuesday Morning Freezing Level
0'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
1000'
(Easterly Flow *)
Leavenworth Elevation
Monday Morning Snow Level
2500'
Monday Afternoon Snow Level
3000'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
1500'
(Easterly Flow *)
Stevens Pass Elevation
Monday Morning Snow Level
2500'
Monday Afternoon Snow Level
2500'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
1500'
(Easterly Flow *)
Snoqualmie Pass Elevation
Monday Morning Snow Level
2500'
Monday Afternoon Snow Level
2500'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
2000'
(Easterly Flow *)
Mt. Rainier & Crystal Elevation
Monday Morning Snow Level
3000'
Monday Afternoon Snow Level
2500'
Monday Evening Freezing Level
2000'
Monday Night Freezing Level
1000'
Tuesday Morning Freezing Level
1000'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
2000'
(Easterly Flow *)
Mt. Hood Elevation
Monday Morning Snow Level
3500'
Monday Afternoon Snow Level
3000'
Monday Evening Freezing Level
2500'
Monday Night Freezing Level
1500'
Tuesday Morning Freezing Level
1500'
(Easterly Flow *)
Tuesday Afternoon Freezing Level
3000'
(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

Monday Monday Night Saturday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area LT 0.10 0 0
Washington Pass 0 0 0
Leavenworth 0 0 0
Stevens Pass LT 0.10 0 0
Snoqualmie Pass LT 0.10 0 0
Mission Ridge 0 0 0
Crystal Mt LT 0.10 0 0
Paradise LT 0.10 0 0
White Pass LT 0.10 0 0
Mt Hood Meadows LT 0.10 0 0
LT 0.25 0 0
Hurricane Ridge Precipitation Forecast
Monday 0
Monday Night 0
Saturday 0
Mt Baker Ski Area Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Washington Pass Precipitation Forecast
Monday 0
Monday Night 0
Saturday 0
Leavenworth Precipitation Forecast
Monday 0
Monday Night 0
Saturday 0
Stevens Pass Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Snoqualmie Pass Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Mission Ridge Precipitation Forecast
Monday 0
Monday Night 0
Saturday 0
Crystal Mt Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Paradise Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
White Pass Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Mt Hood Meadows Precipitation Forecast
Monday LT 0.10
Monday Night 0
Saturday 0
Timberline Precipitation Forecast
Monday LT 0.25
Monday Night 0
Saturday 0

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Monday Morning W 0 - 10 W 0 - 10 W 10 - 20 W 5 - 15 W 15 - 25
Monday Afternoon SW 0 - 10 SW 0 - 10 W 5 - 15 W 5 - 15 W 10 - 20
Monday Evening SW 0 - 10 SW 0 - 10 W 0 - 10 W 0 - 10 W 5 - 15
Monday Night SW 5 - 15 SW 0 - 10 W 0 - 10 W 0 - 10 W 0 - 10
Tuesday Morning SW 5 - 15 SW 0 - 10 W 0 - 10 W 0 - 10 W 0 - 10
Hurricane Ridge Elevation
Monday Morning W 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening SW 0 - 10
Monday Night SW 5 - 15
Tuesday Morning SW 5 - 15
Tuesday Afternoon S 5 - 15
Mt. Baker Elevation
Monday Morning W 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening SW 0 - 10
Monday Night SW 0 - 10
Tuesday Morning SW 0 - 10
Tuesday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Elevation
Monday Morning W 10 - 20
Monday Afternoon W 5 - 15
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 0 - 10
Mt. Rainier Elevation
Monday Morning W 5 - 15
Monday Afternoon W 5 - 15
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 0 - 10
Mt. Hood Elevation
Monday Morning W 15 - 25
Monday Afternoon W 10 - 20
Monday Evening W 5 - 15
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 5 - 15
Hurricane Ridge Direction - Speed
Monday Morning W 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening SW 0 - 10
Monday Night SW 5 - 15
Tuesday Morning SW 5 - 15
Tuesday Afternoon S 5 - 15
Mt. Baker Direction - Speed
Monday Morning W 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening SW 0 - 10
Monday Night SW 0 - 10
Tuesday Morning SW 0 - 10
Tuesday Afternoon SW 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Monday Morning W 10 - 20
Monday Afternoon W 5 - 15
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 0 - 10
Mt. Rainier Direction - Speed
Monday Morning W 5 - 15
Monday Afternoon W 5 - 15
Monday Evening W 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 0 - 10
Mt. Hood Direction - Speed
Monday Morning W 15 - 25
Monday Afternoon W 10 - 20
Monday Evening W 5 - 15
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday 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
Monday Morning W 0 - 10 W 0 - 10 NW 10 - 20 NW 5 - 15 W 15 - 25
Monday Afternoon W 0 - 10 SW 0 - 10 WNW 5 - 15 NW 0 - 10 NW 10 - 20
Monday Evening W 0 - 10 SW 0 - 10 WNW 0 - 10 NW 0 - 10 NW 0 - 10
Monday Night SW 5 - 15 SW 5 - 15 SW 10 - 20 W 5 - 15 W 0 - 10
Tuesday Morning W 10 - 20 W 5 - 15 W 10 - 20 W 10 - 20 W 5 - 15
Mt. Baker Direction - Speed
Monday Morning W 0 - 10
Monday Afternoon W 0 - 10
Monday Evening W 0 - 10
Monday Night SW 5 - 15
Tuesday Morning W 10 - 20
Tuesday Afternoon WNW 10 - 20
Washington Pass Direction - Speed
Monday Morning W 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening SW 0 - 10
Monday Night SW 5 - 15
Tuesday Morning W 5 - 15
Tuesday Afternoon W 5 - 15
Stevens and Snoqualmie Pass Direction - Speed
Monday Morning NW 10 - 20
Monday Afternoon WNW 5 - 15
Monday Evening WNW 0 - 10
Monday Night SW 10 - 20
Tuesday Morning W 10 - 20
Tuesday Afternoon NW 10 - 20
Mt. Rainier Direction - Speed
Monday Morning NW 5 - 15
Monday Afternoon NW 0 - 10
Monday Evening NW 0 - 10
Monday Night W 5 - 15
Tuesday Morning W 10 - 20
Tuesday Afternoon NW 10 - 20
Mt. Hood Direction - Speed
Monday Morning W 15 - 25
Monday Afternoon NW 10 - 20
Monday Evening NW 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 5 - 15
Tuesday 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.

Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k

Previous forecast from Dec 22, 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.