Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Monday
A strong blocking ridge offshore continues to dominate Pacific Northwest weather for the rest of the week, bringing northerly flow aloft, continued mild temperatures, and dry weather with low relative humidity.
Temperatures were mild Monday night (at many NWAC stations, the temperature stayed above freezing) with some inversion. These inversions should mix out by mid-morning.
A weak shortwave embedded in the northerly flow should pass along our coastline today, reducing the influence of the high pressure slightly. High clouds associated with the low are reaching the US-Canadian border as of 7 AM. They should spread southward throughout the region, producing filtered sunshine and in some cases obscuring the sun (most likely over the Olympic Peninsula). Clouds should limit daytime warming and temperatures should be around 5F cooler than on Monday for areas West of the Cascade Crest, with similar temperatures east of the Crest.
Expect another mild night with clouds gradually exiting the region to the south and high pressure edging further back into the region.
Wednesday should be warm and mostly sunny under the influence of the offshore high.
Weather Forecast
Hurricane Ridge
| Tuesday | Mild. High overcast moving in early and decreasing late in the day. |
Mt. Baker
| Tuesday | Mild. High clouds resulting in heavily filtered sunlight, then mostly clearing in the late afternoon. |
Washington Pass and Leavenworth
| Tuesday | Mild. High clouds arriving by mid-morning resulting in filtered sunlight with partial clearing in the north late in the afternoon. |
Stevens and Snoqualmie Pass
| Tuesday | Mild. High clouds increasing in the early morning hours with heavily filtered sunlight from late morning onwards. Light and variable winds through the Passes. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Mild. Heavily filtered sunlight under high clouds from mid-morning onward. |
Mt. Hood
| Tuesday | Mild. Clear early with heavily filtered sunlight under high clouds from early afternoon onward. |
Issued: 7:05 AM PDT Tuesday, March 17, 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 | Freezing Level | 7000' | 5500' | 4500' | 4500' | 5000' | 6000' | 5500' | 4500' |
| Tuesday Afternoon | Freezing Level | 6500' | 6500' | 6000' | 5000' | 6000' | 6500' | 7000' | 7000' |
| Tuesday Evening | Freezing Level | 6000' | 5500' | 5500' | 5000' | 5500' | 6000' | 6000' | 6000' |
| Tuesday Night | Freezing Level | 5500' | 4000' | 4000' | 3500' | 4000' | 4000' | 4500' | 4000' |
| Wednesday Morning | Freezing Level | 5000' | 4000' | 4000' | 4000' | 4000' | 4500' | 4500' | 4000' |
| Wednesday Afternoon | Freezing Level | 6000' | 5000' | 5500' | 5500' | 5500' | 5500' | 5500' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 7000' |
| Tuesday Afternoon |
Freezing Level 6500' |
| Tuesday Evening |
Freezing Level 6000' |
| Tuesday Night |
Freezing Level 5500' |
| Wednesday Morning |
Freezing Level 5000' |
| Wednesday Afternoon |
Freezing Level 6000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 5500' |
| Tuesday Afternoon |
Freezing Level 6500' |
| Tuesday Evening |
Freezing Level 5500' |
| Tuesday Night |
Freezing Level 4000' |
| Wednesday Morning |
Freezing Level 4000' |
| Wednesday Afternoon |
Freezing Level 5000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 4500' |
| Tuesday Afternoon |
Freezing Level 6000' |
| Tuesday Evening |
Freezing Level 5500' |
| Tuesday Night |
Freezing Level 4000' |
| Wednesday Morning |
Freezing Level 4000' |
| Wednesday Afternoon |
Freezing Level 5500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 4500' |
| Tuesday Afternoon |
Freezing Level 5000' |
| Tuesday Evening |
Freezing Level 5000' |
| Tuesday Night |
Freezing Level 3500' |
| Wednesday Morning |
Freezing Level 4000' |
| Wednesday Afternoon |
Freezing Level 5500' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 5000' |
| Tuesday Afternoon |
Freezing Level 6000' |
| Tuesday Evening |
Freezing Level 5500' |
| Tuesday Night |
Freezing Level 4000' |
| Wednesday Morning |
Freezing Level 4000' |
| Wednesday Afternoon |
Freezing Level 5500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 6000' |
| Tuesday Afternoon |
Freezing Level 6500' |
| Tuesday Evening |
Freezing Level 6000' |
| Tuesday Night |
Freezing Level 4000' |
| Wednesday Morning |
Freezing Level 4500' |
| Wednesday Afternoon |
Freezing Level 5500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 5500' |
| Tuesday Afternoon |
Freezing Level 7000' |
| Tuesday Evening |
Freezing Level 6000' |
| Tuesday Night |
Freezing Level 4500' |
| Wednesday Morning |
Freezing Level 4500' |
| Wednesday Afternoon |
Freezing Level 5500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 4500' |
| Tuesday Afternoon |
Freezing Level 7000' |
| Tuesday Evening |
Freezing Level 6000' |
| Tuesday Night |
Freezing Level 4000' |
| Wednesday Morning |
Freezing Level 4000' |
| 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 | Monday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 |
| Washington Pass | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 |
| Mission Ridge | 0 | 0 | 0 |
| Crystal Mt | 0 | 0 | 0 |
| Paradise | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 |
| Mt Hood Meadows | 0 | 0 | 0 |
| Timberline | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Monday | 0 |
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: 7:05 AM PDT Tuesday, March 17, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | E 0 - 10 | ENE 0 - 10 | SE 0 - 10 | VAR 0 - 10 | VAR 0 - 10 |
| Tuesday Afternoon | ESE 0 - 10 | ENE 0 - 10 | E 0 - 10 | SW 0 - 10 | VAR 0 - 10 |
| Tuesday Evening | ESE 0 - 10 | ENE 0 - 10 | E 0 - 10 | VAR 0 - 10 | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 | ENE 0 - 10 | E 0 - 10 | VAR 0 - 10 | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 | VAR 0 - 10 | W 0 - 10 | VAR 0 - 10 | E 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 | WNW 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | E 0 - 10 |
| Tuesday Afternoon | ESE 0 - 10 |
| Tuesday Evening | ESE 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | ENE 0 - 10 |
| Tuesday Afternoon | ENE 0 - 10 |
| Tuesday Evening | ENE 0 - 10 |
| Tuesday Night | ENE 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SE 0 - 10 |
| Tuesday Afternoon | E 0 - 10 |
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | SW 0 - 10 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | VAR 0 - 10 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | WNW 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | E 0 - 10 |
| Tuesday Afternoon | ESE 0 - 10 |
| Tuesday Evening | ESE 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | ENE 0 - 10 |
| Tuesday Afternoon | ENE 0 - 10 |
| Tuesday Evening | ENE 0 - 10 |
| Tuesday Night | ENE 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SE 0 - 10 |
| Tuesday Afternoon | E 0 - 10 |
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | SW 0 - 10 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | VAR 0 - 10 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | WNW 0 - 10 |
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 | VAR 0 - 10 | VAR 0 - 10 | NW 0 - 10 | VAR 0 - 10 | NNE 5 - 15 |
| Tuesday Afternoon | E 5 - 15 | E 5 - 15 | S 0 - 10 | SSW 0 - 10 | N 0 - 10 |
| Tuesday Evening | VAR 0 - 10 | VAR 0 - 10 | SE 0 - 10 | VAR 0 - 10 | NE 5 - 15 |
| Tuesday Night | NW 5 - 15 | NW 5 - 15 | NW 0 - 10 | E 0 - 10 | ENE 5 - 15 |
| Wednesday Morning | NNW 5 - 15 | NNW 5 - 15 | NNW 5 - 15 | N 5 - 15 | NE 5 - 15 |
| Wednesday Afternoon | NNW 5 - 15 | NW 5 - 15 | NNW 5 - 15 | NNW 5 - 15 | NE 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | E 5 - 15 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | NW 5 - 15 |
| Wednesday Morning | NNW 5 - 15 |
| Wednesday Afternoon | NNW 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | E 5 - 15 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | NW 5 - 15 |
| Wednesday Morning | NNW 5 - 15 |
| Wednesday Afternoon | NW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | NW 0 - 10 |
| Tuesday Afternoon | S 0 - 10 |
| Tuesday Evening | SE 0 - 10 |
| Tuesday Night | NW 0 - 10 |
| Wednesday Morning | NNW 5 - 15 |
| Wednesday Afternoon | NNW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | SSW 0 - 10 |
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday Morning | N 5 - 15 |
| Wednesday Afternoon | NNW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | NNE 5 - 15 |
| Tuesday Afternoon | N 0 - 10 |
| Tuesday Evening | NE 5 - 15 |
| Tuesday Night | ENE 5 - 15 |
| Wednesday Morning | NE 5 - 15 |
| Wednesday Afternoon | NE 5 - 15 |
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 16, 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.