Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Friday & Monday
A Puget Sound convergence zone that formed overnight is currently focused just south of Snoqualmie Pass and the I-90 corridor this morning. The convergence zone will weaken as it tilts further south later this morning. Upper level ridging will move over the region today. However, low level onshore flow (westerly) will provide plenty of low level moisture for the region. For areas along the west slopes of the Cascades that are cloudy this morning, cloud bases will lift but a few sunbreaks are likely the best we can hope for sunshine wise. For areas like the Olympics, north Cascades and the east slopes of the Cascades, the first half of the day should be sunnier with increasing cumulus/statrocumulus in the afternoon.
A Pacific forntal 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, not reaching Mt. Hood until the afternoon. Locally moderate snow may accumulate in the Mt. Baker area during the daylight hours. The front will pass through the Washington Cascades in the mid-afternoon with winds increasing ahead of and behind the front. Significant cooling and post-frontal snow showers will develop along the west slopes of the Cascades Saturday evening.
Weather Forecast
Hurricane Ridge
| Friday | Partly to mostly sunny in the morning becoming cloudy in the afternoon. |
Mt. Baker
| Friday | Partly to mostly sunny in the morning becoming mostly cloudy in the afternoon. |
Washington Pass and Leavenworth
| Friday | Partly sunny in the morning becoming mostly cloudy in the afternoon. |
Stevens and Snoqualmie Pass
| Friday | Cloudy with light rain and snow showers in the morning, becoming mostly cloudy in the afternoon. Light west wind in the Passes becoming moderate in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Friday | Cloudy with light rain and snow showers in the morning, heaviest Paradise area, becoming mostly cloudy in the afternoon. |
Mt. Hood
| Friday | Cloudy with scattered light rain and snow showers in the morning, becoming mostly cloudy in the afternoon. |
Issued: 7:14 AM 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 Morning | Snow Level | 4000' | 3000' | 3500' | 4000' | 4000' | 4000' | 4500' | 4500' |
| Friday Afternoon | Snow Level | 5500' | 5500' | 6000' | 6000' | 5000' | 5000' | 6000' | 6000' |
| 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' | 5000' | 5500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 5500' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 5500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning |
Snow Level 3000' |
| Friday Afternoon |
Snow Level 5500' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Washington Pass | Elevation |
|---|---|
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 3500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 5000' |
| Leavenworth | Elevation |
|---|---|
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 5000' |
| Stevens Pass | Elevation |
|---|---|
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 6000' |
| Friday Night |
Freezing Level 5500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 5000' |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 6000' |
| Friday Night |
Freezing Level 6000' |
| Saturday Morning |
Snow Level 6000' |
| Saturday 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
| Friday | Friday Night | Monday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | LT 0.10 | 0.25 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0.50 - 0.75 |
| Washington Pass | 0 | 0 | LT 0.25 |
| Leavenworth | 0 | 0 | LT 0.10 |
| Stevens Pass | LT 0.10 | 0 | 0.25 - 0.50 |
| Snoqualmie Pass | LT 0.25 | 0 | 0.25 - 0.50 |
| Mission Ridge | 0 | 0 | LT 0.10 |
| Crystal Mt | LT 0.25 | 0 | 0.25 |
| Paradise | LT 0.25 | 0 | 0.50 |
| White Pass | LT 0.10 | 0 | 0.25 |
| Mt Hood Meadows | LT 0.10 | 0 | LT 0.25 |
| Timberline | LT 0.25 | 0 | LT 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday | LT 0.10 |
| Friday Night | LT 0.10 |
| Monday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday | LT 0.10 |
| Friday Night | LT 0.10 |
| Monday | 0.50 - 0.75 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Monday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Monday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday | LT 0.10 |
| Friday Night | 0 |
| Monday | 0.25 - 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday | LT 0.25 |
| Friday Night | 0 |
| Monday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Monday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday | LT 0.25 |
| Friday Night | 0 |
| Monday | 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday | LT 0.25 |
| Friday Night | 0 |
| Monday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday | LT 0.10 |
| Friday Night | 0 |
| Monday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday | LT 0.10 |
| Friday Night | 0 |
| Monday | LT 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday | LT 0.25 |
| Friday Night | 0 |
| 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: 7:14 AM PDT Friday, April 12, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Morning | W 0 - 10 | VAR 0 - 10 | W 5 - 15 | WSW 5 - 15 | W 10 - 20 |
| Friday Afternoon | SW 5 - 15 | SW 5 - 15 | W 5 - 15 | SW 5 - 15 | W 10 - 20 |
| 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 | S 20 - 30 | SW 20 - 30 | SW 15 - 30 | SW 15 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning | W 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | S 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Friday Evening | WSW 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | SW 5 - 15 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 15 - 30 |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning | W 10 - 20 |
| Friday Afternoon | W 10 - 20 |
| Friday Evening | W 15 - 25 |
| Friday Night | W 10 - 20 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 15 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Morning | W 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| 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 Morning | VAR 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | SW 0 - 10 |
| Friday Night | S 10 - 20 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | S 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| 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 Morning | WSW 5 - 15 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | SW 5 - 15 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 15 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | W 10 - 20 |
| Friday Afternoon | W 10 - 20 |
| Friday Evening | W 15 - 25 |
| Friday Night | W 10 - 20 |
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 15 - 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 Morning | NW 5 - 15 | WNW 5 - 15 | NW 15 - 25 | NW 15 - 25 | NW 15 - 25 |
| Friday Afternoon | W 10 - 20 | W 10 - 20 | NW 20 - 30 | NW 15 - 25 | NW 15 - 25 |
| 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 Morning | NW 5 - 15 |
| Friday Afternoon | W 10 - 20 |
| 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 Morning | WNW 5 - 15 |
| Friday Afternoon | W 10 - 20 |
| 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 Morning | NW 15 - 25 |
| Friday Afternoon | NW 20 - 30 |
| 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 Morning | NW 15 - 25 |
| Friday Afternoon | NW 15 - 25 |
| 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 Morning | NW 15 - 25 |
| Friday Afternoon | NW 15 - 25 |
| 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Apr 11, 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.