Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Friday night through Monday
Mostly cloudy skies along with popcorn scattered showers will quickly wane this evening with the loss of daytime heating. A Pacific frontal system will approach from the NW overnight, reaching the Mt. Baker area and the Olympics by daybreak. Precipitation will spread south and inland during the day on Saturday, not reaching Mt. Hood until the afternoon. Increasing S-SW winds will ramp up in a similar fashion. Locally moderate snow should accumulate in the Mt. Baker area during the daylight hours with lighter amounts for other areas.
Snow levels will likely bump up slightly (500') with the frontal passage in the late afternoon. It won't take very long for significant cooling and post-frontal snow showers to develop along the west slopes of the Cascades Saturday evening. Snow levels should plummet to 1500-2000' by early Sunday morning. Westerly flow aloft coupled with a weak shortwave disturbance passing through the region will keep plenty of showers and clouds in the forecast along with brisk westerly ridgecrest winds. The further east of the crest you head Sunday, the more sunshine you'll encounter. Areas of convergence will locally enhance snowfall for the west slopes of the Cascades over the weekend.
Weather Forecast
Hurricane Ridge
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. Becoming cloudy after midnight with light rain and snow developing late. |
| Saturday | Light rain and snow. Windy. |
Mt. Baker
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. Becoming cloudy after midnight with light rain and snow developing late. |
| Saturday | Light to occasionally moderate rain and snow. Becoming windy late morning through afternoon. |
Washington Pass and Leavenworth
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. Becoming cloudy late tonight. |
| Saturday | Periods of light rain and snow. Becoming windy at ridgecrest. |
Stevens and Snoqualmie Pass
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. Becoming cloudy late tonight. Moderate west wind in the Passes becoming light. |
| Saturday | Light rain and snow developing in the morning and becoming light to occasionally moderate in the afternoon. West winds increasing in the afternoon at Pass level and ridgecrest. |
Mt. Rainier, Crystal and White Pass
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. Becoming cloudy late tonight. Moderate west wind in the Passes becoming light. |
| Saturday | Light rain and snow developing in the morning becoming locally moderate at Paradise in the afternoon. Becoming windy. |
Mt. Hood
| Friday Night | Mostly cloudy. Slight chance of an evening light shower. |
| Saturday | Mostly cloudy in the morning. Cloudy with light rain and snow developing mid-day with increasing winds. |
Issued: 2:35 PM PDT Friday, April 12, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Evening | Freezing Level | 5000' | 5000' | 5000' | 5000' | 5000' | 5000' | 6000' | 6000' |
| Friday Night | Freezing Level | 5500' | 4000' | 3500' | 4500' | 4500' | 4500' | 5500' | 6000' |
| Saturday Morning | Snow Level | 3500' | 3500' | 3500' | 4000' | 3500' | 3500' | 4000' | 6000' |
| Saturday Afternoon | Snow Level | 4500' | 4000' | 5000' | 5000' | 4500' | 4500' | 4500' | 5500' |
| Saturday Evening | Snow Level | 2500' | 3000' | 4000' | 4000' | 3500' | 3500' | 4000' | 4500' |
| Saturday Night | Snow Level | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2500' |
| Sunday Morning | Snow Level | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Sunday Afternoon | Snow Level | 3000' | 3000' | 3500' | 3500' | 3000' | 3000' | 3500' | 3500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 5500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Saturday Evening |
Snow Level 3000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 3500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 5000' |
| Saturday Evening |
Snow Level 4000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 5000' |
| Saturday Evening |
Snow Level 4000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3500' |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 3500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 3500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Evening |
Freezing Level 6000' |
| Friday Night |
Freezing Level 5500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 4000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 3500' |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening |
Freezing Level 6000' |
| Friday Night |
Freezing Level 6000' |
| Saturday Morning |
Snow Level 6000' |
| Saturday Afternoon |
Snow Level 5500' |
| Saturday Evening |
Snow Level 4500' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 2000' |
| Sunday 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
| Friday Night | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | 0.25 | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | 0.50 - 0.75 | 0.25 - 0.50 | 0.25 |
| Washington Pass | 0 | LT 0.25 | LT 0.10 | LT 0.10 |
| Leavenworth | 0 | LT 0.10 | LT 0.10 | 0 |
| Stevens Pass | 0 | 0.25 - 0.50 | 0.25 - 0.50 | 0.25 - 0.50 |
| Snoqualmie Pass | 0 | 0.25 - 0.50 | 0.25 - 0.50 | 0.25 - 0.50 |
| Mission Ridge | 0 | LT 0.10 | LT 0.10 | 0 |
| Crystal Mt | 0 | LT 0.25 | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | 0.50 | 0.25 | 0.25 - 0.50 |
| White Pass | 0 | LT 0.25 | LT 0.25 | LT 0.25 |
| Mt Hood Meadows | 0 | LT 0.25 | 0.25 | LT 0.10 |
| Timberline | 0 | LT 0.25 | 0.25 - 0.50 | LT 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Monday | 0.25 |
| Monday Night | LT 0.10 |
| Monday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Monday | 0.50 - 0.75 |
| Monday Night | 0.25 - 0.50 |
| Monday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | LT 0.10 |
| Monday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.10 |
| Monday Night | LT 0.10 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | 0.25 - 0.50 |
| Monday Night | 0.25 - 0.50 |
| Monday | 0.25 - 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | 0.25 - 0.50 |
| Monday Night | 0.25 - 0.50 |
| Monday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.10 |
| Monday Night | LT 0.10 |
| Monday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | LT 0.10 |
| Monday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Monday | 0.50 |
| Monday Night | 0.25 |
| Monday | 0.25 - 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | LT 0.25 |
| Monday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | 0.25 |
| Monday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Monday | LT 0.25 |
| Monday Night | 0.25 - 0.50 |
| Monday | LT 0.25 |
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: 2:35 PM PDT Friday, April 12, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | SW 0 - 10 | SW 0 - 10 | WSW 10 - 20 | SW 5 - 15 | W 15 - 25 |
| Friday Night | S 10 - 20 | S 10 - 20 | SW 5 - 15 | SW 5 - 15 | W 10 - 20 |
| Saturday Morning | S 20 - 30 | S 15 - 25 | SW 10 - 20 | SW 10 - 20 | SW 10 - 20 |
| Saturday Afternoon | SW 15 - 25 | SSW 20 - 30 | SW 20 - 30 | SW 20 - 30 | SW 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | SSW 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Evening | SW 5 - 15 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening | W 15 - 25 |
| Friday Night | W 10 - 20 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | SSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | WSW 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | SW 5 - 15 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | W 15 - 25 |
| Friday Night | W 10 - 20 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 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 | |
|---|---|---|---|---|---|
| Friday Evening | W 15 - 25 | W 10 - 20 | NW 25 - 35 | NW 20 - 30 | NW 15 - 25 |
| Friday Night | SW 20 - 30 | WSW 15 - 25 | W 25 - 35 | W 20 - 30 | NW 20 - 30 |
| Saturday Morning | SW 20 - 30 | SW 20 - 30 | WSW 35 - 45 | SW 35 - 45 | W 25 - 35 |
| Saturday Afternoon | SW 25 - 35 | SW 25 - 35 | SW 35 - 45 | SW 35 - 45 | WSW 40 - 50 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | W 15 - 25 |
| Friday Night | SW 20 - 30 |
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Evening | W 10 - 20 |
| Friday Night | WSW 15 - 25 |
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | NW 25 - 35 |
| Friday Night | W 25 - 35 |
| Saturday Morning | WSW 35 - 45 |
| Saturday Afternoon | SW 35 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | NW 20 - 30 |
| Friday Night | W 20 - 30 |
| Saturday Morning | SW 35 - 45 |
| Saturday Afternoon | SW 35 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | NW 15 - 25 |
| Friday Night | NW 20 - 30 |
| Saturday Morning | W 25 - 35 |
| Saturday Afternoon | WSW 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.
Issued: 2:35 PM PDT Friday, April 12, 2019
Extended Weather Synopsis for Monday night through Monday
Showers in westerly flow should wind down Sunday night. The jet stream will drop south into northern California on Monday with a low pressure system digging off the coast. Forecast models disagree with how much precipitation to rotate up and over the Pacific Northwest. There is higher confidence that snow levels will remain on the cool side Monday. The main operational forecast models continue to be out of phase on Tuesday with a run-of-the-mill frontal system passing through or weak shortwave ridging overhead possible.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday Night | Snow Level | 1500' - 2500' | 1500' - 2500' | 2500' - 3500' | |
| Monday | Snow Level | 4000' - 5000' | 4000' - 5000' | 4000' - 5000' | |
| Monday Night | Snow Level | 3000' - 4000' | 3000' - 4000' | 3000' - 4000' | |
| Tuesday | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Night |
Snow Level 1500' - 2500' |
| Monday |
Snow Level 4000' - 5000' |
| Monday Night |
Snow Level 3000' - 4000' |
| Tuesday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night |
Snow Level 1500' - 2500' |
| Monday |
Snow Level 4000' - 5000' |
| Monday Night |
Snow Level 3000' - 4000' |
| Tuesday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night |
Snow Level 2500' - 3500' |
| Monday |
Snow Level 4000' - 5000' |
| Monday Night |
Snow Level 3000' - 4000' |
| Tuesday |
Snow Level 4000' - 5000' |
* 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 Apr 12, 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.