Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Tuesday
A weakening frontal system approaching the region on NW flow has spread mid-level clouds across much of the Washington Cascades and Olympics early Tuesday morning. The cloud cover combined with some warm air advection has generally brought 5-10F of warming relative to this time on Monday. Warm air advection and increasing moisture will continue throughout the day as light snow initially develops in the Mt. Baker area, spreading south and reaching Snoqualmie Pass by the end of the day. Light to moderate rain and snow should peak overnight as it spreads throughout the Washington Cascades with snow levels rising to 3000-4000 ft. Snow levels gradually lower on Wednesday following a cold frontal passage early Wednesday morning, but post-frontal snow shower activity should be light and ending by Wednesday afternoon.
Mt. Baker can expect 6-12" of snow with Stevens Pass expecting 3-6". Most other NWAC stations can expect less than 2" of snow.
Winds should gradually increase during the day on Tuesday and should peak overnight with many locations at 5000 ft expecting sustained moderate winds and strong gusts before gradually easing on Wednesday. Alpine winds east of the Cascade Crest could be particularly strong with very strong or even extreme gusts expected.
Weather Forecast
Hurricane Ridge
| Tuesday | Mostly cloudy with better chances of sun breaks in the afternoon. Moderate alpine winds increasing to strong. |
Mt. Baker
| Tuesday | Cloudy early with light snow gradually developing. Moderate alpine winds increasing to strong. |
Washington Pass and Leavenworth
| Tuesday | Mostly cloudy with increasing chances of very light snow near the Cascade Crest. Partly cloudy skies further east. Moderate alpine winds increasing to strong. |
Stevens and Snoqualmie Pass
| Tuesday | Clouds thickening in the morning with light rain or snow developing. Increasing light W winds through the Passes. Increasing moderate winds becoming strong in the alpine. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Partly cloudy in the morning, becoming mostly cloudy in the afternoon. Increasing moderate winds becoming strong in the alpine later in the day. |
Mt. Hood
| Tuesday | Mostly sunny in the morning, then becoming partly cloudy in the afternoon. |
Issued: 9:08 AM PDT Tuesday, March 10, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level | 2500' | 1500' | 1500' | 2000' | 2000' | 2500' | 2500' | 4000' |
| Tuesday Afternoon | Snow Level | 3000' | 2000' | 3000' | 3500' | 3500' | 3500' | 3500' | 3000' |
| Tuesday Evening | Snow Level | 4500' | 2500' | 3000' | 3500' | 3000' | 3500' | 4000' | 6500' |
| Tuesday Night | Snow Level | 4000' | 3000' | 3000' | 4000' | 3000' | 3000' | 3500' | 5500' |
| Wednesday Morning | Snow Level | 2000' | 2000' | 2500' | 3500' | 2500' | 2500' | 3000' | 3500' |
| Wednesday Afternoon | Freezing Level | 3000' | 3000' | 3500' | 4000' | 3500' | 3000' | 4000' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Freezing Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Freezing Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Freezing Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Freezing Level 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Freezing Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 6500' |
| Tuesday Night |
Snow Level 5500' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Freezing Level 4500' |
* 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 | Tuesday Night | Tuesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | LT 0.10 | 0 |
| Mt Baker Ski Area | 0.25 | 0.50 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.25 | 0 |
| Leavenworth | 0 | LT 0.10 | 0 |
| Stevens Pass | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Mission Ridge | 0 | LT 0.10 | LT 0.10 |
| Crystal Mt | 0 | LT 0.10 | LT 0.10 |
| Paradise | 0 | LT 0.25 | LT 0.10 |
| White Pass | 0 | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | 0 | 0 | LT 0.10 |
| Timberline | 0 | 0 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 |
| Tuesday Night | 0.50 |
| Tuesday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.25 |
| Tuesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | LT 0.10 |
| Tuesday Night | 0.25 - 0.50 |
| Tuesday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | LT 0.10 |
| Tuesday Night | 0.25 - 0.50 |
| Tuesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 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: 9:08 AM PDT Tuesday, March 10, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SW 10 - 20 | S 10 - 20 | WSW 10 - 20 | WSW 5 - 15 | WSW 5 - 15 |
| Tuesday Afternoon | SW 15 - 25 | S 15 - 25 | WSW 15 - 25 | SW 10 - 20 | W 10 - 20 |
| Tuesday Evening | WSW 15 - 25 | SSW 20 - 30 | WSW 20 - 30 | W 15 - 25 | W 15 - 25 |
| Tuesday Night | WSW 15 - 25 | WSW 15 - 25 | W 25 - 35 | W 20 - 30 | W 15 - 25 |
| Wednesday Morning | W 5 - 15 | WSW 5 - 15 | W 15 - 25 | W 15 - 25 | W 20 - 30 |
| Wednesday Afternoon | W 5 - 15 | WSW 5 - 15 | W 5 - 15 | W 5 - 15 | W 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | SW 10 - 20 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Evening | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | S 15 - 25 |
| Tuesday Evening | SSW 20 - 30 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | WSW 10 - 20 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | W 25 - 35 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | WSW 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | WSW 5 - 15 |
| Tuesday Afternoon | W 10 - 20 |
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 15 - 25 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | SW 10 - 20 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Evening | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | S 15 - 25 |
| Tuesday Evening | SSW 20 - 30 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 10 - 20 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | W 25 - 35 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 5 - 15 |
| Tuesday Afternoon | W 10 - 20 |
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 15 - 25 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 15 - 25 |
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 Morning | W 35 - 45 | W 30 - 40 | W 35 - 45 | W 30 - 40 | W 20 - 30 |
| Tuesday Afternoon | WSW 40 - 55 | W 40 - 55 | W 40 - 55 | W 35 - 45 | WNW 20 - 30 |
| Tuesday Evening | WSW 45 - 55 | WSW 50 - 65 | W 50 - 65 | W 35 - 45 | W 30 - 40 |
| Tuesday Night | WSW 40 - 50 | W 45 - 6 | W 40 - 55 | W 40 - 50 | W 40 - 50 |
| Wednesday Morning | W 20 - 30 | W 30 - 40 | WNW 40 - 55 | WNW 35 - 45 | NW 35 - 45 |
| Wednesday Afternoon | W 25 - 35 | W 20 - 30 | WNW 40 - 55 | WNW 35 - 45 | NW 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | W 35 - 45 |
| Tuesday Afternoon | WSW 40 - 55 |
| Tuesday Evening | WSW 45 - 55 |
| Tuesday Night | WSW 40 - 50 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | W 30 - 40 |
| Tuesday Afternoon | W 40 - 55 |
| Tuesday Evening | WSW 50 - 65 |
| Tuesday Night | W 45 - 6 |
| Wednesday Morning | W 30 - 40 |
| Wednesday Afternoon | W 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | W 35 - 45 |
| Tuesday Afternoon | W 40 - 55 |
| Tuesday Evening | W 50 - 65 |
| Tuesday Night | W 40 - 55 |
| Wednesday Morning | WNW 40 - 55 |
| Wednesday Afternoon | WNW 40 - 55 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | W 30 - 40 |
| Tuesday Afternoon | W 35 - 45 |
| Tuesday Evening | W 35 - 45 |
| Tuesday Night | W 40 - 50 |
| Wednesday Morning | WNW 35 - 45 |
| Wednesday Afternoon | WNW 35 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | W 20 - 30 |
| Tuesday Afternoon | WNW 20 - 30 |
| Tuesday Evening | W 30 - 40 |
| Tuesday Night | W 40 - 50 |
| Wednesday Morning | NW 35 - 45 |
| Wednesday Afternoon | NW 35 - 45 |
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 Mar 10, 2020
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.