Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Saturday
710 AM: Updated White Pass Weather for today
A north to south oriented front is pushing through the Pacific Northwest today. The front will stall and weaken as the trailing upper level trough digs south and sends part of the energy into California. Before the system washes out later this evening, areas favoring southerly flow (not the Passes) will pick up a decent shot of moisture, especially the Mt. Baker area, and with honorable mentions for Crystal, Mission Ridge and the south slopes of the Olympics. Winds aloft are quite strong with this morning and generally showing up in higher elevation NWAC sites west of the Cascade crest. Snow levels are on the rise west of the crest as well. Easterly flow through the Cascade passes will initially insulate the Passes, but all Passes should see light rain either later today or this evening.
Showers will diminish overnight through Monday morning as the front passes through the Cascades. A slow cooling trend will begin Sunday night. A stronger, wetter system will begin to take aim at the area late Monday afternoon.
Weather Forecast
Hurricane Ridge
| Sunday | Moderate rain. Windy. |
Mt. Baker
| Sunday | Stormy with moderate to heavy rain and snow. Slow warming trend. |
Washington Pass and Leavenworth
| Sunday | Light rain and snow, occasionally moderate Mission Ridge area. Slow warming trend. |
Stevens and Snoqualmie Pass
| Sunday | Light rain and snow. Change to rain at Snoqualmie in the afternoon, snow at Stevens. East winds at Pass level moderate easing in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Sunday | Stormy with moderate rain and snow. Slow warming trend. East flow at White Pass will cause snow down to Pass level in the morning, going to rain mid-day. |
Mt. Hood
| Sunday | Light rain. Warming trend. Windy in the alpine. |
Issued: 7:11 AM PST Sunday, December 16, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Snow Level * | 7000' | 4000' | 3000' | 3500' | 3000' | 3000' | 5000' | 6000' |
| Sunday Afternoon | Snow Level * | 6500' | 5000' | 4000' | 4000' | 4000' | 5000' | 6000' | 7500' |
| Sunday Evening | Snow Level | 5500' | 5500' | 4000' | 4500' | 4500' | 6000' | 6000' | 6000' |
| Sunday Night | Snow Level | 4500' | 4500' | 4000' | 4500' | 4500' | 4500' | 4500' | 4500' |
| Monday Morning | Snow Level | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' |
| Monday Afternoon | Snow Level * | 4000' | 3500' | 4000' | 4500' | 4000' | 4000' | 4000' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Snow Level 7000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 6500' (Easterly Flow *) |
| Sunday Evening |
Snow Level 5500' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Snow Level 4000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 5500' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 4000' |
| Sunday Night |
Snow Level 4000' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3500' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 4500' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 4500' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 6000' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Snow Level 5000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 6000' (Easterly Flow *) |
| Sunday Evening |
Snow Level 6000' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Snow Level 6000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 7500' (Easterly Flow *) |
| Sunday Evening |
Snow Level 6000' |
| Sunday Night |
Snow Level 4500' |
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4500' (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.
Precipitation Forecast
| Sunday | Sunday Night | Saturday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.50 | LT 0.25 | LT 0.25 |
| Mt Baker Ski Area | 2.00 | 1.00 | 0.50 |
| Washington Pass | 0.25 - 0.50 | 0.25 - 0.50 | LT 0.10 |
| Leavenworth | 0.50 | LT 0.10 | 0 |
| Stevens Pass | 0.25 - 0.50 | LT 0.25 | LT 0.10 |
| Snoqualmie Pass | 0.25 - 0.50 | LT 0.25 | LT 0.25 |
| Mission Ridge | 0.50 - 0.75 | LT 0.10 | 0 |
| Crystal Mt | 0.75 -1.00 | 0.25 - 0.50 | LT 0.10 |
| Paradise | 0.75 | 0.25 - 0.50 | 0.25 |
| White Pass | 0.25 - 0.50 | LT 0.25 | LT 0.10 |
| Mt Hood Meadows | 0.25 | 0.25 | LT 0.25 |
| Timberline | 0.25 | 0.25 - 0.50 | LT 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0.50 |
| Sunday Night | LT 0.25 |
| Saturday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday | 2.00 |
| Sunday Night | 1.00 |
| Saturday | 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.25 - 0.50 |
| Saturday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday | 0.50 |
| Sunday Night | LT 0.10 |
| Saturday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.25 |
| Saturday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.25 |
| Saturday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0.50 - 0.75 |
| Sunday Night | LT 0.10 |
| Saturday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday | 0.75 -1.00 |
| Sunday Night | 0.25 - 0.50 |
| Saturday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday | 0.75 |
| Sunday Night | 0.25 - 0.50 |
| Saturday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.25 |
| Saturday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday | 0.25 |
| Sunday Night | 0.25 |
| Saturday | LT 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday | 0.25 |
| Sunday Night | 0.25 - 0.50 |
| Saturday | 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: 7:11 AM PST Sunday, December 16, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | S 35 - 45 | SE 20 - 30 | ESE 20 - 30 | SE 15 - 30 | SE 15 - 25 |
| Sunday Afternoon | S 20 - 30 | SE 20 - 30 | ESE 15 - 25 | SE 15 - 25 | S 15 - 25 |
| Sunday Evening | SSW 20 - 30 | S 20 - 30 | SW 10 - 20 | SSW 10 - 20 | SW 15 - 25 |
| Sunday Night | SW 15 - 25 | S 15 - 25 | SW 10 - 20 | SW 10 - 20 | SW 10 - 20 |
| Monday Morning | S 10 - 20 | S 10 - 20 | SW 5 - 15 | S 10 - 20 | SW 10 - 20 |
| Monday Afternoon | SSE 15 - 30 | S 15 - 25 | SSE 10 - 20 | S 15 - 25 | S 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | S 35 - 45 |
| Sunday Afternoon | S 20 - 30 |
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | SSE 15 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | SE 20 - 30 |
| Sunday Afternoon | SE 20 - 30 |
| Sunday Evening | S 20 - 30 |
| Sunday Night | S 15 - 25 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | ESE 20 - 30 |
| Sunday Afternoon | ESE 15 - 25 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SSE 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | SE 15 - 30 |
| Sunday Afternoon | SE 15 - 25 |
| Sunday Evening | SSW 10 - 20 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | SE 15 - 25 |
| Sunday Afternoon | S 15 - 25 |
| Sunday Evening | SW 15 - 25 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | SW 10 - 20 |
| Monday Afternoon | S 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | S 35 - 45 |
| Sunday Afternoon | S 20 - 30 |
| Sunday Evening | SSW 20 - 30 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | SSE 15 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | SE 20 - 30 |
| Sunday Afternoon | SE 20 - 30 |
| Sunday Evening | S 20 - 30 |
| Sunday Night | S 15 - 25 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | ESE 20 - 30 |
| Sunday Afternoon | ESE 15 - 25 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SSE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | SE 15 - 30 |
| Sunday Afternoon | SE 15 - 25 |
| Sunday Evening | SSW 10 - 20 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | SE 15 - 25 |
| Sunday Afternoon | S 15 - 25 |
| Sunday Evening | SW 15 - 25 |
| Sunday Night | SW 10 - 20 |
| Monday Morning | SW 10 - 20 |
| Monday Afternoon | S 10 - 20 |
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 | |
|---|---|---|---|---|---|
| Sunday Morning | SSW 50 - 60 | S 30 - 40 | SSW 50 - 60 | SSW 50 - 60 | SW 55 - 65 |
| Sunday Afternoon | S 40 - 50 | S 30 - 40 | SSW 45 - 55 | SW 45 - 55 | SW 50 - 60 |
| Sunday Evening | SW 40 - 50 | SW 20 - 30 | SW 30 - 40 | SW 40 - 50 | SW 35 - 45 |
| Sunday Night | SW 25 - 35 | SW 35 - 45 | SW 30 - 40 | SW 30 - 40 | SW 35 - 45 |
| Monday Morning | SW 20 - 30 | SW 30 - 40 | SW 20 - 30 | SW 25 - 35 | SW 30 - 40 |
| Monday Afternoon | SSW 30 - 40 | SW 20 - 30 | SW 25 - 35 | SW 30 - 40 | SW 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | SSW 50 - 60 |
| Sunday Afternoon | S 40 - 50 |
| Sunday Evening | SW 40 - 50 |
| Sunday Night | SW 25 - 35 |
| Monday Morning | SW 20 - 30 |
| Monday Afternoon | SSW 30 - 40 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | S 30 - 40 |
| Sunday Afternoon | S 30 - 40 |
| Sunday Evening | SW 20 - 30 |
| Sunday Night | SW 35 - 45 |
| Monday Morning | SW 30 - 40 |
| Monday Afternoon | SW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | SSW 50 - 60 |
| Sunday Afternoon | SSW 45 - 55 |
| Sunday Evening | SW 30 - 40 |
| Sunday Night | SW 30 - 40 |
| Monday Morning | SW 20 - 30 |
| Monday Afternoon | SW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | SSW 50 - 60 |
| Sunday Afternoon | SW 45 - 55 |
| Sunday Evening | SW 40 - 50 |
| Sunday Night | SW 30 - 40 |
| Monday Morning | SW 25 - 35 |
| Monday Afternoon | SW 30 - 40 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | SW 55 - 65 |
| Sunday Afternoon | SW 50 - 60 |
| Sunday Evening | SW 35 - 45 |
| Sunday Night | SW 35 - 45 |
| Monday Morning | SW 30 - 40 |
| Monday Afternoon | SW 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 Dec 16, 2018
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.