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Mountain Weather Forecast

Issued: 2:05 PM PST Thursday, March 7, 2024
by Dennis D'Amico

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 Saturday

Early this afternoon, convective clouds have bubbled up over the higher terrain of the northwest Cascades along with a few high clouds floating in from the west, but otherwise skies are mostly sunny across the mountains with highs in the 20s and 30s. We'll see a slow uptick in cloud cover tonight as a Pacific frontal system nears, with partly to mostly clear skies down near Mt Hood and along the east slopes of the Cascades gradually thickening closer to the Canadian border and over the Olympics. 

Warm frontal moisture will brush our region on Friday, with light to occasionally moderate precipitation reaching the Olympics and the northwest Cascades along with strong southerly winds. Precipitation is unlikely to move inland as the front becomes more north-south oriented and warm frontal precipitation lifts north. The Mt Hood area and the south/central WA will see more sunshine along with milder temperatures. Offshore gradients will increase during the day, so these areas should also expect an increase in S-SE ridgeline winds. 

Windy conditions will continue Friday night as the frontal system inches closer and precipitation returns to the Olympics and northwest Cascades. The front will pass through the Cascades mid-morning. This should lead to a brief period of more moderate precipitation, followed by post-frontal showers in SW flow. While it won't be a soaker or major winter storm, Saturday will be a wet and breezy day with snow levels between 3000-4000'.   

Weather Forecast

Olympics
Thursday Night Partly cloudy in the evening, then cloudy after midnight with a chance of light rain or snow late. Ridgeline winds becoming moderate overnight.
Cloudy with light to occasionally moderate rain and snow. Moderate to strong ridgeline winds.
West North
Thursday Night Partly cloudy in the evening, then mostly cloudy after midnight with a slight chance of light rain or snow late. Ridgeline winds becoming moderate overnight.
Cloudy with light to occasionally moderate rain and snow. Moderate to strong ridgeline winds.
West Central
Thursday Night Partly cloudy in the evening, then mostly cloudy after midnight with increasing high and mid clouds.
Mostly cloudy with a chance of light rain or snow. Ridgeline winds becoming moderate in the afternoon.
West South
Thursday Night Mostly clear in the evening, then partly cloudy after midnight with increasing high clouds.
Partly to mostly sunny in the morning, then partly to mostly cloudy with increasing high and mid clouds in the afternoon. Ridgeline winds becoming moderate in the afternoon.
Stevens Pass
Thursday Night Mostly clear in the evening, then partly cloudy after midnight with increasing high clouds. Light WNW ridgeline winds and light east wind at Pass level.
Partly sunny in the morning, then mostly cloudy with increasing high and mid clouds in the afternoon. S-SE ridgeline winds becoming moderate in the afternoon. Light to moderate east winds at Pass level.
Snoqualmie Pass
Thursday Night Mostly clear in the evening, then partly cloudy after midnight with increasing high clouds. Light WNW ridgeline winds and light east wind at Pass level.
Partly sunny in the morning, then mostly cloudy with increasing high and mid clouds in the afternoon. S-SE ridgeline winds becoming moderate in the afternoon. Light to moderate east winds at Pass level.
East North
Thursday Night Mostly clear in the evening, then partly cloudy after midnight with increasing high clouds.
Partly sunny in the morning, then mostly cloudy with increasing high and mid clouds in the afternoon. Ridgeline winds becoming moderate in the afternoon.
East Central
Thursday Night Mostly clear in the evening, then partly cloudy after midnight with increasing high clouds.
Mostly sunny in the morning, then partly to mostly cloudy with increasing high and mid clouds in the afternoon. Ridgeline winds becoming moderate in the afternoon.
East South
Thursday Night Mostly clear. A few passing high clouds after midnight.
Mostly sunny in the morning, then partly sunny with high clouds in the afternoon. Ridgeline winds becoming moderate in the afternoon.
Mt. Hood
Thursday Night Mostly clear. A few passing high clouds after midnight.
Mostly sunny in the morning, then partly sunny with high clouds 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
Thursday Evening Snow Level None' None' None' None' 2000' 2000' None' 3000'
Thursday Night Snow Level None' None' None' None' 1500' 1500' None' 3000'
Friday Morning Snow Level* None' None' None' None' 2500' 2500' None' 5500'
Friday Afternoon Snow Level* None' None' None' None' 4500' 4500' None' 7500'
Friday Evening Snow Level* None' None' None' None' 3500' 4000' None' 7000'
Friday Night Snow Level* None' None' None' None' 3500' 4000' None' 6500'
Saturday Morning Snow Level None' None' None' None' 3000' 3000' None' 4000'
Hurricane Ridge Elevation
Thursday Evening Snow Level
None'
Thursday Night Snow Level
None'
Friday Morning Snow Level
None'
(Easterly Flow *)
Friday Afternoon Snow Level
None'
(Easterly Flow *)
Friday Evening Snow Level
None'
(Easterly Flow *)
Friday Night Snow Level
None'
(Easterly Flow *)
Saturday Morning Snow Level
None'
Saturday Afternoon Snow Level
None'
Mt. Baker Elevation
Thursday Evening Snow Level
None'
Thursday Night Snow Level
None'
Friday Morning Snow Level
None'
(Easterly Flow *)
Friday Afternoon Snow Level
None'
(Easterly Flow *)
Friday Evening Snow Level
None'
(Easterly Flow *)
Friday Night Snow Level
None'
(Easterly Flow *)
Saturday Morning Snow Level
None'
Saturday Afternoon Snow Level
None'
Washington Pass Elevation
Thursday Evening Snow Level
None'
Thursday Night Snow Level
None'
Friday Morning Snow Level
None'
(Easterly Flow *)
Friday Afternoon Snow Level
None'
(Easterly Flow *)
Friday Evening Snow Level
None'
(Easterly Flow *)
Friday Night Snow Level
None'
(Easterly Flow *)
Saturday Morning Snow Level
None'
Saturday Afternoon Snow Level
None'
Leavenworth Elevation
Thursday Evening Snow Level
None'
Thursday Night Snow Level
None'
Friday Morning Snow Level
None'
(Easterly Flow *)
Friday Afternoon Snow Level
None'
(Easterly Flow *)
Friday Evening Snow Level
None'
(Easterly Flow *)
Friday Night Snow Level
None'
(Easterly Flow *)
Saturday Morning Snow Level
None'
Saturday Afternoon Snow Level
None'
Stevens Pass Elevation
Thursday Evening Snow Level
2000'
Thursday Night Snow Level
1500'
Friday Morning Snow Level
2500'
(Easterly Flow *)
Friday Afternoon Snow Level
4500'
(Easterly Flow *)
Friday Evening Snow Level
3500'
(Easterly Flow *)
Friday Night Snow Level
3500'
(Easterly Flow *)
Saturday Morning Snow Level
3000'
Saturday Afternoon Snow Level
3500'
Snoqualmie Pass Elevation
Thursday Evening Snow Level
2000'
Thursday Night Snow Level
1500'
Friday Morning Snow Level
2500'
(Easterly Flow *)
Friday Afternoon Snow Level
4500'
(Easterly Flow *)
Friday Evening Snow Level
4000'
(Easterly Flow *)
Friday Night Snow Level
4000'
(Easterly Flow *)
Saturday Morning Snow Level
3000'
Saturday Afternoon Snow Level
3500'
Mt. Rainier & Crystal Elevation
Thursday Evening Snow Level
None'
Thursday Night Snow Level
None'
Friday Morning Snow Level
None'
(Easterly Flow *)
Friday Afternoon Snow Level
None'
(Easterly Flow *)
Friday Evening Snow Level
None'
(Easterly Flow *)
Friday Night Snow Level
None'
(Easterly Flow *)
Saturday Morning Snow Level
None'
Saturday Afternoon Snow Level
None'
Mt. Hood Elevation
Thursday Evening Snow Level
3000'
Thursday Night Snow Level
3000'
Friday Morning Snow Level
5500'
(Easterly Flow *)
Friday Afternoon Snow Level
7500'
(Easterly Flow *)
Friday Evening Snow Level
7000'
(Easterly Flow *)
Friday Night Snow Level
6500'
(Easterly Flow *)
Saturday Morning Snow Level
4000'
Saturday Afternoon Snow Level
3500'

* 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 Friday Friday Night Saturday
4 pm - 4 am 4 am - 4 pm 4 pm - 4 am 4 am - 4 pm
Hurricane Ridge LT 0.10 LT 0.25 LT 0.25 0.25 - 0.50
Mt Baker Ski Area 0 0.25 - 0.50 0.25 0.75
Mt. Loop - Barlow Pass 0 LT 0.10 LT 0.10 0.50
Stevens Pass 0 0 0 LT 0.25
Snoqualmie Pass 0 0 0 0.25 - 0.50
Crystal Mt 0 0 0 0.25
Paradise 0 0 0 0.50
White Pass 0 0 0 0.25
Washington Pass 0 0 0 LT 0.25
Mission Ridge 0 0 0 LT 0.25
Salmon la Sac - Gallagher Head 0 0 0 LT 0.25
Tieton River - Darland Mt. 0 0 0 LT 0.25
Mt Hood Meadows 0 0 0 0.25
0 0 0 0.25 - 0.50
Hurricane Ridge Precipitation Forecast
Thursday Night LT 0.10
Friday LT 0.25
Friday Night LT 0.25
Saturday 0.25 - 0.50
Mt Baker Ski Area Precipitation Forecast
Thursday Night 0
Friday 0.25 - 0.50
Friday Night 0.25
Saturday 0.75
Mt. Loop - Barlow Pass Precipitation Forecast
Thursday Night 0
Friday LT 0.10
Friday Night LT 0.10
Saturday 0.50
Stevens Pass Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday LT 0.25
Snoqualmie Pass Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.25 - 0.50
Crystal Mt Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.25
Paradise Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.50
White Pass Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.25
Washington Pass Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday LT 0.25
Mission Ridge Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday LT 0.25
Salmon la Sac - Gallagher Head Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday LT 0.25
Tieton River - Darland Mt. Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday LT 0.25
Mt Hood Meadows Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.25
Timberline Precipitation Forecast
Thursday Night 0
Friday 0
Friday Night 0
Saturday 0.25 - 0.50

Free Winds at 5000' (mph)

Hurricane Ridge Mt. Baker Stevens to Snoqualmie Pass Mt. Rainier Mt. Hood
Thursday Evening --- None - None --- None - None --- None - None --- None - None W None - None
Thursday Night --- None - None --- None - None --- None - None --- None - None WSW None - None
Friday Morning --- None - None --- None - None --- None - None --- None - None SW None - None
Hurricane Ridge Elevation
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Baker Elevation
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Stevens and Snoqualmie Pass Elevation
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Rainier Elevation
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Hood Elevation
Thursday Evening W None - None
Thursday Night WSW None - None
Friday Morning SW None - None
Friday Afternoon S None - None
Hurricane Ridge Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Baker Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Rainier Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Hood Direction - Speed
Thursday Evening W None - None
Thursday Night WSW None - None
Friday Morning SW None - None
Friday Afternoon S None - None

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 --- None - None --- None - None --- None - None --- None - None --- None - None
Thursday Night --- None - None --- None - None --- None - None --- None - None --- None - None
Friday Morning --- None - None --- None - None --- None - None --- None - None --- None - None
Mt. Baker Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Washington Pass Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Stevens and Snoqualmie Pass Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Rainier Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None
Mt. Hood Direction - Speed
Thursday Evening --- None - None
Thursday Night --- None - None
Friday Morning --- None - None
Friday Afternoon --- None - None

Extended Weather Synopsis for Saturday night through Monday

An active and progressive weather pattern continues with showers Saturday night followed by another N-S oriented frontal system Sunday, and then another one Monday night. Snow levels will bump between 2000-4000' during this period along with bouts of strong winds.  The last storm may be the strongest of the trio before we head into a drier and eventually warmer pattern late next week. 

Extended Snow/Freezing Levels

Mt. Baker Snoqualmie Pass Mt. Hood Easterly Flow *
Saturday Night Snow Level None' - None' None' - None' None' - None' *
Sunday Snow Level None' - None' None' - None' None' - None'
Sunday Night Snow Level None' - None' None' - None' None' - None'
Mt. Baker Elevation
Saturday Night Snow Level
None' - None'
(Easterly Flow *)
Sunday Snow Level
None' - None'
Sunday Night Snow Level
None' - None'
Monday Snow Level
None' - None'
Snoqualmie Pass Elevation
Saturday Night Snow Level
None' - None'
(Easterly Flow *)
Sunday Snow Level
None' - None'
Sunday Night Snow Level
None' - None'
Monday Snow Level
None' - None'
Mt. Hood Elevation
Saturday Night Snow Level
None' - None'
(Easterly Flow *)
Sunday Snow Level
None' - None'
Sunday Night Snow Level
None' - None'
Monday Snow Level
None' - None'

* 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 March 7, 2024

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