Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Friday & Tuesday
High pressure rebounded to it's former glory from early this week as a weak circulation center trapped under the dominant high pressure spins to the east of our area. With freezing levels 10000-11500 ft on Friday, temperatures started the day above freezing in many areas. The exception is for locations influenced by a shallow inversion E of the Cascade Crest and near pass level through the mountain gaps. Expect full sunshine today with many of the aforementioned cold pool locations warming above freezing during the middle of the day.
However, with easterly gradients and offshore flow increasing, the cold air pool east of the Cascade Crest may thicken and slosh around slightly, bring cooler temperatures to some locations and increasingly sharp temperature contrasts over short distance (horizontally and vertically) as the day progresses. Winds may increase into the moderate range for places like Snoqualmie Pass by Friday afternoon and should continue to increase through Saturday morning as the high shifts east and a system approaches from the west. E winds are expected to peak in the moderate to strong range on Saturday morning in the locations favored by gap winds. By Saturday afternoon, gradually increasing SSW winds should help to mix the air masses slightly, allowing the E flow to begin to relent. Mid-level clouds ahead of the approaching system may reach the Olympics and Mt. Hood area late in the day.
Weather Forecast
Hurricane Ridge
| Friday | Sunny and warm. Light winds. |
Mt. Baker
| Friday | Sunny and warm. Light winds. |
Washington Pass and Leavenworth
| Friday | Sunny. Shallow inversion with cold temperatures in the valleys and warm temperatures above. Light winds increasing. |
Stevens and Snoqualmie Pass
| Friday | Sunny. Shallow inversion with cold temperatures in the valleys and warm temperatures above. 5000 ft and pass-level E wind becoming moderate by afternoon. |
Mt. Rainier, Crystal and White Pass
| Friday | Sunny. Shallow inversion east of the Cascade Crest and through the mountain gaps with cold temperatures in the valleys and warm temperatures above. Light winds increasing. |
Mt. Hood
| Friday | Sunny and unseasonably warm. Light winds. |
Issued: 7:10 AM PST Friday, December 4, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Morning | Freezing Level * | 10000' | 10500' | 10500' | 11000' | 11000' | 11000' | 11000' | 10500' |
| Friday Afternoon | Freezing Level * | 10500' | 10500' | 11000' | 11000' | 11000' | 11000' | 11000' | 11000' |
| Friday Evening | Freezing Level * | 11000' | 11000' | 1500' | 2000' | 2500' | 3000' | 11500' | 11500' |
| Friday Night | Freezing Level * | 11500' | 11000' | 1000' | 1500' | 2000' | 2500' | 11500' | 11500' |
| Saturday Morning | Freezing Level * | 11500' | 11500' | 1500' | 1500' | 1500' | 2000' | 11500' | 11500' |
| Saturday Afternoon | Freezing Level * | 10500' | 11000' | 11500' | 11000' | 11000' | 11000' | 11000' | 10500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 11000' (Easterly Flow *) |
| Friday Night |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning |
Freezing Level 10500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Friday Evening |
Freezing Level 11000' (Easterly Flow *) |
| Friday Night |
Freezing Level 11000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 10500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Friday Morning |
Freezing Level 11000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 11000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Friday Night |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 11000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Friday Night |
Freezing Level 2500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Morning |
Freezing Level 11000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 11500' (Easterly Flow *) |
| Friday Night |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning |
Freezing Level 10500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 11000' (Easterly Flow *) |
| Friday Evening |
Freezing Level 11500' (Easterly Flow *) |
| Friday Night |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 11500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 10500' (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
| Friday | Friday Night | Tuesday | |
|---|---|---|---|
| 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 |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Tuesday | 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: 7:10 AM PST Friday, December 4, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Morning | SE 0 - 10 | WSW 0 - 10 | E 10 - 20 | ESE 5 - 15 | E 0 - 10 |
| Friday Afternoon | S 0 - 10 | SE 0 - 10 | ESE 15 - 25 | ESE 10 - 20 | E 10 - 20 |
| Friday Evening | S 5 - 15 | S 5 - 15 | ESE 15 - 25 | ESE 10 - 20 | ESE 10 - 20 |
| Friday Night | S 5 - 15 | SSE 10 - 20 | ESE 20 - 30 | ESE 15 - 25 | ESE 15 - 25 |
| Saturday Morning | SSE 10 - 20 | SE 10 - 20 | ESE 15 - 25 | ESE 15 - 25 | SE 10 - 20 |
| Saturday Afternoon | S 15 - 25 | S 15 - 25 | ESE 15 - 25 | ESE 10 - 20 | SSW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning | SE 0 - 10 |
| Friday Afternoon | S 0 - 10 |
| Friday Evening | S 5 - 15 |
| Friday Night | S 5 - 15 |
| Saturday Morning | SSE 10 - 20 |
| Saturday Afternoon | S 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning | WSW 0 - 10 |
| Friday Afternoon | SE 0 - 10 |
| Friday Evening | S 5 - 15 |
| Friday Night | SSE 10 - 20 |
| Saturday Morning | SE 10 - 20 |
| Saturday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning | E 10 - 20 |
| Friday Afternoon | ESE 15 - 25 |
| Friday Evening | ESE 15 - 25 |
| Friday Night | ESE 20 - 30 |
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Morning | ESE 5 - 15 |
| Friday Afternoon | ESE 10 - 20 |
| Friday Evening | ESE 10 - 20 |
| Friday Night | ESE 15 - 25 |
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning | E 0 - 10 |
| Friday Afternoon | E 10 - 20 |
| Friday Evening | ESE 10 - 20 |
| Friday Night | ESE 15 - 25 |
| Saturday Morning | SE 10 - 20 |
| Saturday Afternoon | SSW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Morning | SE 0 - 10 |
| Friday Afternoon | S 0 - 10 |
| Friday Evening | S 5 - 15 |
| Friday Night | S 5 - 15 |
| Saturday Morning | SSE 10 - 20 |
| Saturday Afternoon | S 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Morning | WSW 0 - 10 |
| Friday Afternoon | SE 0 - 10 |
| Friday Evening | S 5 - 15 |
| Friday Night | SSE 10 - 20 |
| Saturday Morning | SE 10 - 20 |
| Saturday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | E 10 - 20 |
| Friday Afternoon | ESE 15 - 25 |
| Friday Evening | ESE 15 - 25 |
| Friday Night | ESE 20 - 30 |
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Morning | ESE 5 - 15 |
| Friday Afternoon | ESE 10 - 20 |
| Friday Evening | ESE 10 - 20 |
| Friday Night | ESE 15 - 25 |
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | E 0 - 10 |
| Friday Afternoon | E 10 - 20 |
| Friday Evening | ESE 10 - 20 |
| Friday Night | ESE 15 - 25 |
| Saturday Morning | SE 10 - 20 |
| Saturday Afternoon | SSW 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 | |
|---|---|---|---|---|---|
| Friday Morning | W 15 - 25 | WNW 10 - 20 | NW 10 - 20 | NNW 5 - 15 | E 10 - 20 |
| Friday Afternoon | WSW 15 - 25 | WSW 5 - 15 | SW 5 - 15 | SE 0 - 10 | E 10 - 20 |
| Friday Evening | SSW 15 - 25 | SSE 10 - 20 | S 10 - 20 | SSE 10 - 20 | ESE 15 - 25 |
| Friday Night | SSW 20 - 30 | SSW 15 - 25 | SSE 15 - 25 | SSE 15 - 25 | ENE 20 - 30 |
| Saturday Morning | S 20 - 30 | SW 15 - 25 | S 15 - 25 | S 15 - 25 | S 15 - 25 |
| Saturday Afternoon | S 20 - 30 | SSW 10 - 20 | WSW 10 - 20 | SW 15 - 25 | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Morning | W 15 - 25 |
| Friday Afternoon | WSW 15 - 25 |
| Friday Evening | SSW 15 - 25 |
| Friday Night | SSW 20 - 30 |
| Saturday Morning | S 20 - 30 |
| Saturday Afternoon | S 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | WSW 5 - 15 |
| Friday Evening | SSE 10 - 20 |
| Friday Night | SSW 15 - 25 |
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | SSW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | NW 10 - 20 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | S 10 - 20 |
| Friday Night | SSE 15 - 25 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | WSW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Morning | NNW 5 - 15 |
| Friday Afternoon | SE 0 - 10 |
| Friday Evening | SSE 10 - 20 |
| Friday Night | SSE 15 - 25 |
| Saturday Morning | S 15 - 25 |
| Saturday Afternoon | SW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | E 10 - 20 |
| Friday Afternoon | E 10 - 20 |
| Friday Evening | ESE 15 - 25 |
| Friday Night | ENE 20 - 30 |
| Saturday Morning | S 15 - 25 |
| 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Dec 3, 2020
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