Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Friday night through Friday
On Friday night, the Pacific Northwest will be under dry NW flow between a weak offshore high in the NE Pacific and a broad continental trough pushing a modified arctic air mass into our region. A lingering low pressure should spark a few snow showers in the Mt. Hood region before continuing eastward leaving the Pacific Northwest dry on Friday night. E and NE winds will gradually increase overnight as this air mass works its way into the region, further increasing into the moderate range by the end of the day Saturday and Saturday night. Freezing levels will gradually decrease through the period. The increasing winds at low-levels should result in more mixing and less of the fog and inversion conditions experienced Friday morning. However, the modified arctic frontal boundary may provide just enough lift to touch off some flurries on the east slopes of the Cascades on Saturday.
The cold air will continue to spill into the region through the mountain gaps through the day on Sunday, with mostly sunny skies in most areas on Sunday. Easterly flow should peak Sunday and Sunday night, producing dangerously cold wind-chills in exposed locations.
Weather Forecast
Hurricane Ridge
| Friday Night | Clearing skies. Light winds. |
| Saturday | Mostly sunny. Light winds. |
Mt. Baker
| Friday Night | Clearing skies, light winds. |
| Saturday | Mostly clear. Light winds. |
Washington Pass and Leavenworth
| Friday Night | Low clouds in the valleys, mostly clear aloft. Light winds. |
| Saturday | Low clouds in the valleys. Light to moderate winds. Slight chance of very light snow at times. |
Stevens and Snoqualmie Pass
| Friday Night | Clearing skies early with low clouds redeveloping through the mountain gaps. Light winds. |
| Saturday | Low clouds in the morning, possibly clearing in the afternoon. Otherwise, mostly sunny skies. Light to moderate E winds through the gaps, light winds at 5000 ft. |
Mt. Rainier, Crystal and White Pass
| Friday Night | Clearing skies early then mostly clear. Light winds. |
| Saturday | Mostly sunny. Light winds. |
Mt. Hood
| Friday Night | Light snow showers in the evening, then clearing skies. Light winds. |
| Saturday | Low clouds in the morning then partly cloudy skies. Gradually increasing light to moderate E flow, strongest at low levels. |
Issued: 2:39 PM PST Friday, March 1, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Evening | Freezing Level | 2500' | 2500' | 2000' | 2000' | 2500' | 2500' | 3000' | 3000' |
| Friday Night | Freezing Level * | 1500' | 1500' | 1000' | 1000' | 1000' | 1500' | 1500' | 1000' |
| Saturday Morning | Freezing Level * | 1000' | 1000' | 500' | 500' | 500' | 1000' | 1000' | 1000' |
| Saturday Afternoon | Freezing Level * | 2000' | 1500' | 1500' | 1500' | 1500' | 2000' | 2000' | 1500' |
| Saturday Evening | Freezing Level * | 2000' | 2000' | 1000' | 1000' | 1000' | 1500' | 1500' | 1000' |
| Saturday Night | Freezing Level * | 1000' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Sunday Morning | Freezing Level * | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Sunday Afternoon | Freezing Level * | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2500' |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2500' |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2000' |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2000' |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2500' |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening |
Freezing Level 2500' |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Evening |
Freezing Level 3000' |
| Friday Night |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening |
Freezing Level 3000' |
| Friday Night |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Saturday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Night |
Freezing Level 500' (Easterly Flow *) |
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (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 Night | Friday | Friday Night | Friday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 | 0 |
| Washington Pass | 0 | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 | 0 |
| Mission Ridge | 0 | 0 | 0 | 0 |
| Crystal Mt | 0 | 0 | 0 | 0 |
| Paradise | 0 | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 | 0 |
| Timberline | LT 0.10 | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday Night | 0 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Friday | 0 |
| Friday Night | 0 |
| Friday | 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: 2:39 PM PST Friday, March 1, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 |
| Friday Night | VAR 0 - 10 | ENE 0 - 10 | E 0 - 10 | VAR 0 - 10 | E 0 - 10 |
| Saturday Morning | ENE 5 - 15 | ENE 5 - 15 | E 5 - 15 | E 5 - 15 | E 10 - 20 |
| Saturday Afternoon | ENE 5 - 15 | ENE 5 - 15 | E 5 - 15 | E 5 - 15 | E 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | VAR 0 - 10 |
| Saturday Morning | ENE 5 - 15 |
| Saturday Afternoon | ENE 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | ENE 0 - 10 |
| Saturday Morning | ENE 5 - 15 |
| Saturday Afternoon | ENE 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | E 0 - 10 |
| Saturday Morning | E 5 - 15 |
| Saturday Afternoon | E 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | VAR 0 - 10 |
| Saturday Morning | E 5 - 15 |
| Saturday Afternoon | E 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | E 0 - 10 |
| Saturday Morning | E 10 - 20 |
| Saturday Afternoon | E 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | VAR 0 - 10 |
| Saturday Morning | ENE 5 - 15 |
| Saturday Afternoon | ENE 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | ENE 0 - 10 |
| Saturday Morning | ENE 5 - 15 |
| Saturday Afternoon | ENE 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | E 0 - 10 |
| Saturday Morning | E 5 - 15 |
| Saturday Afternoon | E 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | VAR 0 - 10 |
| Saturday Morning | E 5 - 15 |
| Saturday Afternoon | E 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | VAR 0 - 10 |
| Friday Night | E 0 - 10 |
| Saturday Morning | E 10 - 20 |
| Saturday Afternoon | E 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 Evening | NW 5 - 15 | NW 5 - 15 | WNW 15 - 25 | NW 10 - 20 | NW 10 - 20 |
| Friday Night | NNW 0 - 10 | NW 0 - 10 | WNW 10 - 20 | WNW 5 - 15 | WNW 5 - 15 |
| Saturday Morning | VAR 0 - 10 | VAR 0 - 10 | NW 0 - 10 | NW 5 - 15 | NW 5 - 15 |
| Saturday Afternoon | VAR 0 - 10 | VAR 0 - 10 | W 0 - 10 | W 5 - 15 | WNW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | NW 5 - 15 |
| Friday Night | NNW 0 - 10 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | VAR 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Evening | NW 5 - 15 |
| Friday Night | NW 0 - 10 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | WNW 15 - 25 |
| Friday Night | WNW 10 - 20 |
| Saturday Morning | NW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | NW 10 - 20 |
| Friday Night | WNW 5 - 15 |
| Saturday Morning | NW 5 - 15 |
| Saturday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | NW 10 - 20 |
| Friday Night | WNW 5 - 15 |
| Saturday Morning | NW 5 - 15 |
| Saturday Afternoon | WNW 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.
Issued: 2:39 PM PST Friday, March 1, 2019
Extended Weather Synopsis for Friday night through Friday
Models form an upper low in the Washington State Vicinity but disagree on its location. Expect a continued surge of cool east flow on Monday and Monday night as the weak wears on and by Tuesday, temperatures begin to moderate slightly. The low does not tap into moisture until Tuesday night or Wednesday as a larger trough links up with the upper low.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday Night | Freezing Level | 500' - 1500' | 0' - 1000' | 0' - 1000' | * |
| Monday | Freezing Level | 0' - 1000' | 0' - 1000' | 0' - 1000' | * |
| Monday Night | Freezing Level | 1500' - 2500' | 0' - 1000' | 0' - 1000' | * |
| Tuesday | Freezing Level | 500' - 1500' | 0' - 1000' | 0' - 1000' | * |
| Mt. Baker | Elevation |
|---|---|
| Sunday Night |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Monday |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Monday Night |
Freezing Level 1500' - 2500' (Easterly Flow *) |
| Tuesday |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Monday |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Monday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Tuesday |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Monday |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Monday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Tuesday |
Freezing Level 0' - 1000' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Mar 1, 2019
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