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Mountain Weather Forecast

Issued: 6:58 AM PST Monday, January 13, 2020
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 & Tuesday

The main snow event for the mountains has ended with another 1-2 feet of snow falling over the last 24 hours for Hurricane Ridge, nearly all west slopes of the Cascades sites including the Passes and at Mt. Hood stations. Mountain temperatures had cooled significantly, with upper elevation stations in the single digits and widespread teens elsewhere. 

A broad upper level trough envelops western Canada with NW flow aloft over the PNW allowing weak disturbances to impact the area over the short term. Strong surface high pressure over the interior of British Columbia and lower pressure along the WA/OR coast will allow modified arctic air to continue seeping out west of the Cascade Crest through the Fraser River Valley. Scattered showers will transition to light continuous snow this afternoon for roughly Stevens Pass and southward as a weak low pressure system races across central Oregon. More moderate snowfall totals are likely for Mt. Hood closer to the low. Very strong westerly winds for the south Washington Cascades and Mt. Hood will ease a bit this afternoon as the low passes to the south. 

The semi-permanent surface low, common in this pattern, will return off the central/southern WA coast this evening. This feature should continue to rotate showers up into the west slopes of the Cascades through Tuesday, with the best chances for additional light accumulations from Snoqualmie Pass and south to Mt. Hood.  

Weather Forecast

Hurricane Ridge
Cloudy with scattered light snow showers. Cold.
Mt. Baker
Cloudy with scattered light snow showers. Cold.
Washington Pass and Leavenworth
Cloudy with isolated light snow showers. Light snow developing in the afternoon Leavenworth area. Cold.
Stevens and Snoqualmie Pass
Cloudy with scattered light snow showers. Light snow developing in the afternoon. Cold. Moderate west winds in the Passes becoming light in the afternoon.
Mt. Rainier, Crystal and White Pass
Cloudy with scattered light snow showers. Light snow developing in the afternoon. Cold. Strong alpine winds.
Mt. Hood
Light to moderate snow increasing mid-day. Very strong west winds decreasing in the afternoon.

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 0' 0' 0' 0' 0' 0' 0' 1000'
Monday Afternoon Snow Level 0' 0' 0' 0' 0' 0' 500' 2000'
Monday Evening Snow Level 0' 0' 0' 0' 0' 0' 500' 2000'
Monday Night Snow Level 0' 0' 0' 0' 0' 0' 0' 1000'
Tuesday Morning Snow Level 0' 0' 0' 0' 0' 0' 0' 0'
Hurricane Ridge Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Mt. Baker Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Washington Pass Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Leavenworth Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Stevens Pass Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Snoqualmie Pass Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
0'
Monday Evening Snow Level
0'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Mt. Rainier & Crystal Elevation
Monday Morning Snow Level
0'
Monday Afternoon Snow Level
500'
Monday Evening Snow Level
500'
Monday Night Snow Level
0'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'
Mt. Hood Elevation
Monday Morning Snow Level
1000'
Monday Afternoon Snow Level
2000'
Monday Evening Snow Level
2000'
Monday Night Snow Level
1000'
Tuesday Morning Snow Level
0'
Tuesday Afternoon Snow Level
0'

* 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 Tuesday
4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 LT 0.10 LT 0.10
Mt Baker Ski Area LT 0.10 LT 0.10 LT 0.10
Stevens Pass LT 0.10 LT 0.10 LT 0.10
Snoqualmie Pass LT 0.25 LT 0.25 LT 0.10
Crystal Mt LT 0.10 LT 0.25 LT 0.10
Paradise LT 0.25 LT 0.25 LT 0.25
White Pass LT 0.25 0.25 LT 0.25
Washington Pass LT 0.10 0 0
Mission Ridge 0 LT 0.10 0
Mt Hood Meadows 0.50 0.50 0.25
Timberline 0.50 - 0.75 0.50 - 0.75 0.25
LT 0.10 LT 0.10 LT 0.10
Hurricane Ridge Precipitation Forecast
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
Mt Baker Ski Area Precipitation Forecast
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
Stevens Pass Precipitation Forecast
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10
Snoqualmie Pass Precipitation Forecast
Monday LT 0.25
Monday Night LT 0.25
Tuesday LT 0.10
Crystal Mt Precipitation Forecast
Monday LT 0.10
Monday Night LT 0.25
Tuesday LT 0.10
Paradise Precipitation Forecast
Monday LT 0.25
Monday Night LT 0.25
Tuesday LT 0.25
White Pass Precipitation Forecast
Monday LT 0.25
Monday Night 0.25
Tuesday LT 0.25
Washington Pass Precipitation Forecast
Monday LT 0.10
Monday Night 0
Tuesday 0
Mission Ridge Precipitation Forecast
Monday 0
Monday Night LT 0.10
Tuesday 0
Mt Hood Meadows Precipitation Forecast
Monday 0.50
Monday Night 0.50
Tuesday 0.25
Timberline Precipitation Forecast
Monday 0.50 - 0.75
Monday Night 0.50 - 0.75
Tuesday 0.25
Leavenworth Precipitation Forecast
Monday LT 0.10
Monday Night LT 0.10
Tuesday LT 0.10

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Monday Morning S 0 - 10 S 0 - 10 SW 15 - 25 W 15 - 25 W 35 - 45
Monday Afternoon SW 0 - 10 SE 0 - 10 WSW 10 - 20 W 10 - 20 W 15 - 25
Monday Evening VAR 0 - 10 E 5 - 15 VAR 0 - 10 SW 0 - 10 W 5 - 15
Monday Night VAR 0 - 10 E 5 - 15 W 0 - 10 W 0 - 10 W 10 - 20
Tuesday Morning W 5 - 15 E 0 - 10 W 5 - 15 W 0 - 10 W 20 - 30
Hurricane Ridge Elevation
Monday Morning S 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening VAR 0 - 10
Monday Night VAR 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 5 - 15
Mt. Baker Elevation
Monday Morning S 0 - 10
Monday Afternoon SE 0 - 10
Monday Evening E 5 - 15
Monday Night E 5 - 15
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Stevens and Snoqualmie Pass Elevation
Monday Morning SW 15 - 25
Monday Afternoon WSW 10 - 20
Monday Evening VAR 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 10 - 20
Mt. Rainier Elevation
Monday Morning W 15 - 25
Monday Afternoon W 10 - 20
Monday Evening SW 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 10 - 20
Mt. Hood Elevation
Monday Morning W 35 - 45
Monday Afternoon W 15 - 25
Monday Evening W 5 - 15
Monday Night W 10 - 20
Tuesday Morning W 20 - 30
Tuesday Afternoon W 20 - 30
Hurricane Ridge Direction - Speed
Monday Morning S 0 - 10
Monday Afternoon SW 0 - 10
Monday Evening VAR 0 - 10
Monday Night VAR 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 5 - 15
Mt. Baker Direction - Speed
Monday Morning S 0 - 10
Monday Afternoon SE 0 - 10
Monday Evening E 5 - 15
Monday Night E 5 - 15
Tuesday Morning E 0 - 10
Tuesday Afternoon VAR 0 - 10
Stevens and Snoqualmie Pass Direction - Speed
Monday Morning SW 15 - 25
Monday Afternoon WSW 10 - 20
Monday Evening VAR 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 5 - 15
Tuesday Afternoon W 10 - 20
Mt. Rainier Direction - Speed
Monday Morning W 15 - 25
Monday Afternoon W 10 - 20
Monday Evening SW 0 - 10
Monday Night W 0 - 10
Tuesday Morning W 0 - 10
Tuesday Afternoon W 10 - 20
Mt. Hood Direction - Speed
Monday Morning W 35 - 45
Monday Afternoon W 15 - 25
Monday Evening W 5 - 15
Monday Night W 10 - 20
Tuesday Morning W 20 - 30
Tuesday Afternoon W 20 - 30

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 WSW 15 - 25 WSW 15 - 25 W 25 - 35 W 35 - 45 W 50 - 60
Monday Afternoon WSW 10 - 20 WSW 10 - 20 W 30 - 40 W 30 - 40 W 40 - 50
Monday Evening WSW 15 - 25 WSW 15 - 25 WSW 25 - 35 W 20 - 30 W 25 - 35
Monday Night WSW 15 - 25 WSW 10 - 20 WSW 25 - 35 WSW 25 - 35 W 35 - 45
Tuesday Morning WSW 10 - 20 WSW 10 - 20 W 20 - 30 W 25 - 35 W 35 - 45
Mt. Baker Direction - Speed
Monday Morning WSW 15 - 25
Monday Afternoon WSW 10 - 20
Monday Evening WSW 15 - 25
Monday Night WSW 15 - 25
Tuesday Morning WSW 10 - 20
Tuesday Afternoon WSW 15 - 25
Washington Pass Direction - Speed
Monday Morning WSW 15 - 25
Monday Afternoon WSW 10 - 20
Monday Evening WSW 15 - 25
Monday Night WSW 10 - 20
Tuesday Morning WSW 10 - 20
Tuesday Afternoon WSW 10 - 20
Stevens and Snoqualmie Pass Direction - Speed
Monday Morning W 25 - 35
Monday Afternoon W 30 - 40
Monday Evening WSW 25 - 35
Monday Night WSW 25 - 35
Tuesday Morning W 20 - 30
Tuesday Afternoon W 20 - 30
Mt. Rainier Direction - Speed
Monday Morning W 35 - 45
Monday Afternoon W 30 - 40
Monday Evening W 20 - 30
Monday Night WSW 25 - 35
Tuesday Morning W 25 - 35
Tuesday Afternoon W 25 - 35
Mt. Hood Direction - Speed
Monday Morning W 50 - 60
Monday Afternoon W 40 - 50
Monday Evening W 25 - 35
Monday Night W 35 - 45
Tuesday Morning W 35 - 45
Tuesday Afternoon W 40 - 50

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 Jan. 12, 2020

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