Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday night through Monday
Warm frontal moisture traversing the area from south to north this afternoon will weaken and lift into Canada later this evening with generally light to moderate precipitation transitioning to light and spottier precipitation during the evening hours. Warm air will continue weaseling it's way into the Cascades later tonight and tomorrow, creating the opportunity for freezing rain mainly from Snoqualmie Pass to Mt. Hood as significant offshore easterly flow continues. However, even Mt. Baker could see a period of light mixed precipitation later tonight and early tomorrow. The east slopes of the Cascades will stay insulated for longer during this stretch, squeezing out light but continuous snowfall through Wednesday.
Precipitation will increase once again tomorrow, first in the Olympics and the Mt. Baker area as the old cold front stalls, and for all locations as the longwave trough kicks the old frontal boundary through tomorrow night. Snow levels will slowly moderate through Wednesday afternoon but it won't be until Wednesday night that snow levels more uniformly mix into the 4500-5000 ft range throughout the Cascades.
Shower activity Wednesday night will wind down Thursday morning. There won't be much of a break from clouds and precipitation as a weak warm front brushes the Olympics and Washington Cascades on Thursday with generally light precipitation.
Weather Forecast
Hurricane Ridge
| Tuesday Night | Periods of light rain and snow. Mild. Windy. |
| Wednesday | Periods of light rain and snow, increasing in the afternoon. Mild. Windy. |
Mt. Baker
| Tuesday Night | Moderate rain and snow in the evening, becoming light after midnight. Mixed precipitation possible after midnight. Slow warming trend. |
| Wednesday | Moderate rain and snow. |
Washington Pass and Leavenworth
| Tuesday Night | Light snow. Moderate east-southeast winds at crest level. |
| Wednesday | Light snow and rain. Slow warming trend. |
Stevens and Snoqualmie Pass
| Tuesday Night | Periods of light snow, potentially mixing with freezing rain at times. Slow warming trend. Moderate east winds at Pass level with higher gusts for the western approaches. |
| Wednesday | Periods of rain and light snow, potentially mixing with freezing rain at times. Precipitation increasing late in the afternoon. Moderate east winds at Pass level decreasing during the day. |
Mt. Rainier, Crystal and White Pass
| Tuesday Night | Periods of light snow, potentially mixing with freezing rain at times. Slow warming trend. Moderate E-SE winds. |
| Wednesday | Periods of rain and light snow, potentially mixing with freezing rain at times. Precipitation increasing in the afternoon. Moderate E-SE winds. |
Mt. Hood
| Tuesday Night | Periods of light rain and snow, potentially mixing with freezing rain at times. Slow warming trend. Moderate E-SE winds. |
| Wednesday | Periods of rain and light snow, potentially mixing with freezing rain at times. Precipitation increasing in the afternoon. Moderate E-SE winds. |
Issued: 2:59 PM PST Tuesday, January 8, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Evening | Snow Level * | 6500' | 3000' | 0' | 0' | 1000' | 2000' | 2500' | 3500' |
| Tuesday Night | Snow Level * | 6000' | 4500' | 500' | 500' | 1500' | 2500' | 3000' | 4000' |
| Wednesday Morning | Snow Level * | 6000' | 4500' | 1000' | 1500' | 2000' | 3000' | 3500' | 4000' |
| Wednesday Afternoon | Snow Level * | 6000' | 4500' | 3000' | 3000' | 3500' | 3500' | 4500' | 5000' |
| Wednesday Evening | Snow Level * | 6000' | 4500' | 3500' | 3500' | 3500' | 4000' | 5000' | 5500' |
| Wednesday Night | Snow Level | 5000' | 4500' | 4000' | 4000' | 4500' | 4500' | 5000' | 5000' |
| Thursday Morning | Snow Level | 5000' | 4500' | 4000' | 4500' | 4500' | 4500' | 4500' | 5500' |
| Thursday Afternoon | Snow Level | 5500' | 4500' | 4500' | 4500' | 5000' | 5000' | 5000' | 5500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 6500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 6000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 6000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 6000' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 6000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 5000' |
| Thursday Morning |
Snow Level 5000' |
| Thursday Afternoon |
Snow Level 5500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4500' |
| Thursday Morning |
Snow Level 4500' |
| Thursday Afternoon |
Snow Level 4500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 0' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4000' |
| Thursday Morning |
Snow Level 4000' |
| Thursday Afternoon |
Snow Level 4500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 0' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4000' |
| Thursday Morning |
Snow Level 4500' |
| Thursday Afternoon |
Snow Level 4500' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 1000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4500' |
| Thursday Morning |
Snow Level 4500' |
| Thursday Afternoon |
Snow Level 5000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 2000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 4000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4500' |
| Thursday Morning |
Snow Level 4500' |
| Thursday Afternoon |
Snow Level 5000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 5000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 5000' |
| Thursday Morning |
Snow Level 4500' |
| Thursday Afternoon |
Snow Level 5000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 4000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Wednesday Evening |
Snow Level 5500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 5000' |
| Thursday Morning |
Snow Level 5500' |
| Thursday Afternoon |
Snow Level 5500' |
* 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
| Tuesday Night | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | 0.50 | 0.25 - 0.50 | LT 0.10 |
| Mt Baker Ski Area | 0.75 -1.00 | 1.00 - 1.50 | 1.50 - 2.00 | 0.50 |
| Washington Pass | 0.25 | LT 0.25 | 0.25 | LT 0.10 |
| Leavenworth | 0.25 | LT 0.25 | LT 0.25 | LT 0.10 |
| Stevens Pass | LT 0.25 | LT 0.25 | 0.25 - 0.50 | LT 0.25 |
| Snoqualmie Pass | 0.25 | LT 0.25 | 0.50 - 0.75 | LT 0.25 |
| Mission Ridge | 0.25 | LT 0.25 | LT 0.25 | LT 0.10 |
| Crystal Mt | 0.25 | 0.25 - 0.50 | 0.50 - 0.75 | LT 0.10 |
| Paradise | 0.25 | 0.25 - 0.50 | 0.75 -1.00 | LT 0.25 |
| White Pass | LT 0.25 | 0.25 | 0.25 - 0.50 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.25 | 0.50 | LT 0.10 |
| Timberline | LT 0.10 | 0.25 | 0.50 - 0.75 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Monday | 0.50 |
| Monday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.75 -1.00 |
| Monday | 1.00 - 1.50 |
| Monday Night | 1.50 - 2.00 |
| Monday | 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | LT 0.25 |
| Monday Night | 0.25 |
| Monday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | LT 0.25 |
| Monday Night | LT 0.25 |
| Monday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Monday | LT 0.25 |
| Monday Night | 0.25 - 0.50 |
| Monday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | LT 0.25 |
| Monday Night | 0.50 - 0.75 |
| Monday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | LT 0.25 |
| Monday Night | LT 0.25 |
| Monday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | 0.25 - 0.50 |
| Monday Night | 0.50 - 0.75 |
| Monday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday Night | 0.25 |
| Monday | 0.25 - 0.50 |
| Monday Night | 0.75 -1.00 |
| Monday | LT 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Monday | 0.25 |
| Monday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Monday | LT 0.25 |
| Monday Night | 0.50 |
| Monday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Monday | 0.25 |
| Monday Night | 0.50 - 0.75 |
| Monday | 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: 2:59 PM PST Tuesday, January 8, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Evening | SE 15 - 25 | SE 5 - 15 | ESE 20 - 30 | SE 15 - 25 | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 | SE 5 - 15 | ESE 20 - 30 | SE 20 - 30 | SE 15 - 25 |
| Wednesday Morning | S 25 - 35 | SE 10 - 20 | ESE 20 - 30 | SE 25 - 35 | SE 15 - 25 |
| Wednesday Afternoon | S 30 - 50 | SE 20 - 30 | ESE 20 - 30 | SE 25 - 35 | S 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | S 25 - 35 |
| Wednesday Afternoon | S 30 - 50 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening | SE 5 - 15 |
| Tuesday Night | SE 5 - 15 |
| Wednesday Morning | SE 10 - 20 |
| Wednesday Afternoon | SE 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening | ESE 20 - 30 |
| Tuesday Night | ESE 20 - 30 |
| Wednesday Morning | ESE 20 - 30 |
| Wednesday Afternoon | ESE 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 20 - 30 |
| Wednesday Morning | SE 25 - 35 |
| Wednesday Afternoon | SE 25 - 35 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | SE 15 - 25 |
| Wednesday Afternoon | S 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | S 25 - 35 |
| Wednesday Afternoon | S 30 - 50 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | SE 5 - 15 |
| Tuesday Night | SE 5 - 15 |
| Wednesday Morning | SE 10 - 20 |
| Wednesday Afternoon | SE 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | ESE 20 - 30 |
| Tuesday Night | ESE 20 - 30 |
| Wednesday Morning | ESE 20 - 30 |
| Wednesday Afternoon | ESE 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 20 - 30 |
| Wednesday Morning | SE 25 - 35 |
| Wednesday Afternoon | SE 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | SE 15 - 25 |
| Wednesday Afternoon | S 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 | |
|---|---|---|---|---|---|
| Tuesday Evening | S 25 - 35 | S 20 - 30 | S 20 - 30 | S 30 - 40 | SSW 40 - 50 |
| Tuesday Night | S 25 - 35 | S 20 - 30 | S 20 - 30 | S 35 - 45 | SSW 40 - 50 |
| Wednesday Morning | S 35 - 45 | S 20 - 30 | SSW 30 - 40 | S 30 - 40 | SW 45 - 55 |
| Wednesday Afternoon | S 40 - 50 | S 25 - 35 | SW 45 - 55 | S 50 - 60 | SW 50 - 60 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | S 25 - 35 |
| Tuesday Night | S 25 - 35 |
| Wednesday Morning | S 35 - 45 |
| Wednesday Afternoon | S 40 - 50 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Evening | S 20 - 30 |
| Tuesday Night | S 20 - 30 |
| Wednesday Morning | S 20 - 30 |
| Wednesday Afternoon | S 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | S 20 - 30 |
| Tuesday Night | S 20 - 30 |
| Wednesday Morning | SSW 30 - 40 |
| Wednesday Afternoon | SW 45 - 55 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | S 30 - 40 |
| Tuesday Night | S 35 - 45 |
| Wednesday Morning | S 30 - 40 |
| Wednesday Afternoon | S 50 - 60 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | SSW 40 - 50 |
| Tuesday Night | SSW 40 - 50 |
| Wednesday Morning | SW 45 - 55 |
| Wednesday Afternoon | SW 50 - 60 |
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.
Issued: 2:59 PM PST Tuesday, January 8, 2019
Extended Weather Synopsis for Monday night through Monday
A ridge of high pressure will quickly amplify over the inland West Thursday night through Saturday leading to fair, mild and dry conditions. North-south oriented frontal boundaries will approach the ridge and split before moving inland. Free-air freezing levels will climb to 7000-9000 ft across the area but increasing offshore flow promises to create temperature inversions and areas of low clouds for the Passes and lower slopes of the eastern Cascades heading into the weekend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday Night | Freezing Level | 5500' - 6500' | 5500' - 6500' | 6500' - 7500' | * |
| Friday | Freezing Level | 7500' - 8500' | 8000' - 9000' | 8500' - 9500' | * |
| Friday Night | Freezing Level | 7500' - 8500' | 8000' - 9000' | 8500' - 9500' | * |
| Saturday | Freezing Level | 7000' - 8000' | 7500' - 8500' | 8000' - 9000' | * |
| Mt. Baker | Elevation |
|---|---|
| Thursday Night |
Freezing Level 5500' - 6500' (Easterly Flow *) |
| Friday |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Friday Night |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Saturday |
Freezing Level 7000' - 8000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Night |
Freezing Level 5500' - 6500' (Easterly Flow *) |
| Friday |
Freezing Level 8000' - 9000' (Easterly Flow *) |
| Friday Night |
Freezing Level 8000' - 9000' (Easterly Flow *) |
| Saturday |
Freezing Level 7500' - 8500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Thursday Night |
Freezing Level 6500' - 7500' (Easterly Flow *) |
| Friday |
Freezing Level 8500' - 9500' (Easterly Flow *) |
| Friday Night |
Freezing Level 8500' - 9500' (Easterly Flow *) |
| Saturday |
Freezing Level 8000' - 9000' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Jan 8, 2019
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