Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Friday & Friday
The Pacific Northwest maintains another day of benign weather under a split flow pattern with the stronger jetstream sending moisture into British Columbia. Inversion conditions exist in many areas on Friday morning with the stronger inversion east of the Cascade Crest and through the Passes. As of 6 AM, Snoqualmie Pass sits at 18F, while the top of Alpental hovers just below freezing at 31F. The inversion should ease by mid-morning across the region as sunny weather warms the lower atmosphere. High cirrus clouds gradually increase ahead of a weak and weakening frontal system today.
The split flow pattern gradually breaks down Friday night with gradually increasing W flow. Clouds begin to lower and thicken overnight with the tail end of a weakening frontal system bringing some periods of very light rain and snow to the Olympics and Mt. Baker areas from late evening onwards.
The weak front crosses the region on Saturday, bringing some light rain and snow to areas of the Cascades from Snoqualmie Pass northward, with the only appreciable amounts of snow (several inches) expected for Mt. Baker. Already light precipitation should diminish behind the front in the afternoon.
Weather Forecast
Hurricane Ridge
| Friday | Sunny with increasing cirrus clouds thickening in the afternoon. Morning inversion mixing out by mid-morning. |
Mt. Baker
| Friday | Sunny with increasing high cirrus clouds. |
Washington Pass and Leavenworth
| Friday | Sunny with increasing high cirrus clouds. Strong inversion weakening by late morning. |
Stevens and Snoqualmie Pass
| Friday | Sunny with increasing high cirrus clouds. Inversion until mid-morning. Decreasing E flow 10-20 mph through the Passes through late morning, switching to light W 5-15 mph. |
Mt. Rainier, Crystal and White Pass
| Friday | Sunny with increasing high cirrus clouds. |
Mt. Hood
| Friday | Sunny with cirrus clouds arriving and increasing from late morning onwards. |
Issued: 7:11 AM PST Friday, February 21, 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 * | 4500' | 3500' | 3000' | 3500' | 4000' | 4000' | 5000' | 6000' |
| Friday Afternoon | Freezing Level | 5500' | 5000' | 5000' | 4500' | 5500' | 5500' | 6000' | 7000' |
| Friday Evening | Freezing Level | 5000' | 4500' | 4000' | 5000' | 4500' | 5000' | 5500' | 7000' |
| Friday Night | Snow Level | 3500' | 2500' | 2000' | 2500' | 2500' | 2500' | 3000' | 5500' |
| Saturday Morning | Snow Level | 3000' | 2500' | 3000' | 3000' | 3000' | 3000' | 3000' | 4000' |
| Saturday Afternoon | Snow Level | 3500' | 2500' | 3500' | 4000' | 3000' | 3000' | 3500' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning |
Freezing Level 4500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5500' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Snow Level 3500' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3500' |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5000' |
| Friday Evening |
Freezing Level 4500' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2500' |
| Saturday Afternoon |
Snow Level 2500' |
| Washington Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5000' |
| Friday Evening |
Freezing Level 4000' |
| Friday Night |
Snow Level 2000' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Friday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 4500' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 4000' |
| Stevens Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5500' |
| Friday Evening |
Freezing Level 4500' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5500' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 6000' |
| Friday Evening |
Freezing Level 5500' |
| Friday Night |
Snow Level 3000' |
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3500' |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7000' |
| Friday Evening |
Freezing Level 7000' |
| Friday Night |
Snow Level 5500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow 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
| Friday | Friday Night | Friday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | LT 0.10 |
| Mt Baker Ski Area | 0 | LT 0.10 | 0.25 |
| Washington Pass | 0 | 0 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | LT 0.10 |
| Snoqualmie Pass | 0 | 0 | LT 0.10 |
| 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 |
| Friday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | LT 0.10 |
| Friday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday | 0 |
| Friday Night | 0 |
| Friday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| 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: 7:11 AM PST Friday, February 21, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Morning | SSW 5 - 15 | SSW 10 - 20 | W 5 - 15 | WSW 5 - 15 | WSW 5 - 15 |
| Friday Afternoon | SW 5 - 15 | SSW 5 - 15 | W 5 - 15 | WSW 5 - 15 | WSW 5 - 15 |
| Friday Evening | WSW 5 - 15 | SSW 5 - 15 | W 5 - 15 | WSW 5 - 15 | W 5 - 15 |
| Friday Night | WSW 10 - 20 | S 10 - 20 | W 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Saturday Morning | WSW 10 - 20 | SSW 10 - 20 | W 10 - 20 | W 10 - 20 | W 10 - 20 |
| Saturday Afternoon | SW 5 - 15 | WSW 5 - 15 | W 10 - 20 | W 5 - 15 | W 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Morning | SSW 5 - 15 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | WSW 5 - 15 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | WSW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Friday Morning | SSW 10 - 20 |
| Friday Afternoon | SSW 5 - 15 |
| Friday Evening | SSW 5 - 15 |
| Friday Night | S 10 - 20 |
| Saturday Morning | SSW 10 - 20 |
| Saturday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Friday Evening | W 5 - 15 |
| Friday Night | W 5 - 15 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Friday Evening | WSW 5 - 15 |
| Friday Night | WSW 5 - 15 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Friday Evening | W 5 - 15 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Morning | SSW 5 - 15 |
| Friday Afternoon | SW 5 - 15 |
| Friday Evening | WSW 5 - 15 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | WSW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Morning | SSW 10 - 20 |
| Friday Afternoon | SSW 5 - 15 |
| Friday Evening | SSW 5 - 15 |
| Friday Night | S 10 - 20 |
| Saturday Morning | SSW 10 - 20 |
| Saturday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Friday Evening | W 5 - 15 |
| Friday Night | W 5 - 15 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Friday Evening | WSW 5 - 15 |
| Friday Night | WSW 5 - 15 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Friday Evening | W 5 - 15 |
| Friday Night | WSW 10 - 20 |
| Saturday Morning | W 10 - 20 |
| Saturday Afternoon | W 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Morning | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 | W 15 - 25 | WSW 15 - 25 |
| Friday Afternoon | WSW 20 - 30 | WSW 20 - 30 | W 25 - 35 | W 20 - 30 | WSW 15 - 25 |
| Friday Evening | WSW 25 - 35 | W 20 - 30 | W 25 - 35 | W 20 - 30 | W 15 - 25 |
| Friday Night | WSW 25 - 35 | W 30 - 40 | W 35 - 45 | W 25 - 35 | W 20 - 30 |
| Saturday Morning | WSW 30 - 40 | WSW 35 - 45 | W 30 - 40 | W 25 - 35 | W 20 - 30 |
| Saturday Afternoon | WSW 15 - 25 | W 25 - 35 | W 25 - 35 | W 20 - 30 | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Morning | WSW 15 - 25 |
| Friday Afternoon | WSW 20 - 30 |
| Friday Evening | WSW 25 - 35 |
| Friday Night | WSW 25 - 35 |
| Saturday Morning | WSW 30 - 40 |
| Saturday Afternoon | WSW 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Morning | WSW 15 - 25 |
| Friday Afternoon | WSW 20 - 30 |
| Friday Evening | W 20 - 30 |
| Friday Night | W 30 - 40 |
| Saturday Morning | WSW 35 - 45 |
| Saturday Afternoon | W 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Morning | WSW 20 - 30 |
| Friday Afternoon | W 25 - 35 |
| Friday Evening | W 25 - 35 |
| Friday Night | W 35 - 45 |
| Saturday Morning | W 30 - 40 |
| Saturday Afternoon | W 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Morning | W 15 - 25 |
| Friday Afternoon | W 20 - 30 |
| Friday Evening | W 20 - 30 |
| Friday Night | W 25 - 35 |
| Saturday Morning | W 25 - 35 |
| Saturday Afternoon | W 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Morning | WSW 15 - 25 |
| Friday Afternoon | WSW 15 - 25 |
| Friday Evening | W 15 - 25 |
| Friday Night | W 20 - 30 |
| Saturday Morning | W 20 - 30 |
| Saturday Afternoon | W 15 - 25 |
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 Feb 20, 2020
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