Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Tuesday
Monday set record high temperatures throughout the Puget Sound region and with a very similar meteorological setup today with even stronger E flow, expect another slew of records to be broken on Tuesday.
The reasons for the records include: (1) a very strong high pressure drifting E across British Columbia and into Alberta this afternoon - air warms as it sinks under the high-pressure. (2) A surface high is associated with the upper-level feature and continues to drive a strong E flow through the mountain gaps. Air further warms as it accelerates through the mountain gaps into the Puget Sound region. Only sheltered valley locations have below-freezing temperatures on Tuesday morning as the combination of subsidence aloft and winds mixing the surface layer keep temperatures at a majority of NWAC stations above freezing overnight. The strong March sunshine will also help to mix out the shallow inversion layer that developed in these locations overnight.
Tuesday night and Wednesday the high drifts gradually ESE away from the region, but it will take some time for the easterly flow to weaken and the air mass to cool, so we expect one more day of record highs and moderate E flow to follow a warm night with mostly above-freezing temperatures.
Weather Forecast
Hurricane Ridge
| Tuesday | Sunny and very warm. Light to moderate winds. |
Mt. Baker
| Tuesday | Sunny and very warm. Light winds likely stronger in areas exposed to E flow. |
Washington Pass and Leavenworth
| Tuesday | Sunny and quite warm. Moderate winds likely gusting strong in areas exposed to E flow. |
Stevens and Snoqualmie Pass
| Tuesday | Sunny and very warm. Moderate 5000 ft winds gusting strong. Moderate E flow through the passes peaking in the morning with strong E winds just west of Snoqualmie Pass. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Sunny and very warm. Moderate winds likely gusting strong in areas exposed to E flow. |
Mt. Hood
| Tuesday | Sunny and very warm. Moderate winds likely gusting strong in areas exposed to E flow. |
Issued: 7:04 AM PDT Tuesday, March 19, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Freezing Level * | 10500' | 8000' | 7000' | 8500' | 8500' | 10000' | 8500' | 9000' |
| Tuesday Afternoon | Freezing Level * | 10500' | 10500' | 10000' | 10000' | 10500' | 10500' | 10000' | 10000' |
| Tuesday Evening | Freezing Level * | 10000' | 10500' | 9500' | 9500' | 10000' | 10500' | 10500' | 10000' |
| Tuesday Night | Freezing Level * | 10000' | 9000' | 7500' | 9000' | 8500' | 10000' | 9500' | 10000' |
| Wednesday Morning | Freezing Level * | 9500' | 9000' | 8000' | 9000' | 9000' | 10000' | 9500' | 9500' |
| Wednesday Afternoon | Freezing Level * | 9500' | 10000' | 10000' | 9500' | 9500' | 9500' | 9500' | 9500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 10000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 7500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 10000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 10000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 10000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (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
| Tuesday | Tuesday 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 |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 0 |
| Tuesday 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: 7:04 AM PDT Tuesday, March 19, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | ESE 10 - 20 | E 5 - 15 | E 20 - 30 | E 15 - 25 | E 15 - 25 |
| Tuesday Afternoon | ESE 10 - 20 | E 5 - 15 | E 15 - 25 | E 15 - 25 | E 20 - 30 |
| Tuesday Evening | ESE 10 - 20 | E 5 - 15 | E 15 - 25 | E 15 - 25 | E 20 - 30 |
| Tuesday Night | ESE 10 - 20 | E 5 - 15 | E 20 - 30 | E 15 - 25 | E 20 - 30 |
| Wednesday Morning | ESE 5 - 15 | E 5 - 15 | E 15 - 25 | E 10 - 20 | E 20 - 30 |
| Wednesday Afternoon | ESE 5 - 15 | E 5 - 15 | E 15 - 25 | E 10 - 20 | E 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | ESE 10 - 20 |
| Tuesday Afternoon | ESE 10 - 20 |
| Tuesday Evening | ESE 10 - 20 |
| Tuesday Night | ESE 10 - 20 |
| Wednesday Morning | ESE 5 - 15 |
| Wednesday Afternoon | ESE 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | E 5 - 15 |
| Tuesday Afternoon | E 5 - 15 |
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | E 20 - 30 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Evening | E 15 - 25 |
| Tuesday Night | E 20 - 30 |
| Wednesday Morning | E 15 - 25 |
| Wednesday Afternoon | E 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | E 15 - 25 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Evening | E 15 - 25 |
| Tuesday Night | E 15 - 25 |
| Wednesday Morning | E 10 - 20 |
| Wednesday Afternoon | E 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | E 15 - 25 |
| Tuesday Afternoon | E 20 - 30 |
| Tuesday Evening | E 20 - 30 |
| Tuesday Night | E 20 - 30 |
| Wednesday Morning | E 20 - 30 |
| Wednesday Afternoon | E 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | ESE 10 - 20 |
| Tuesday Afternoon | ESE 10 - 20 |
| Tuesday Evening | ESE 10 - 20 |
| Tuesday Night | ESE 10 - 20 |
| Wednesday Morning | ESE 5 - 15 |
| Wednesday Afternoon | ESE 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | E 5 - 15 |
| Tuesday Afternoon | E 5 - 15 |
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | E 20 - 30 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Evening | E 15 - 25 |
| Tuesday Night | E 20 - 30 |
| Wednesday Morning | E 15 - 25 |
| Wednesday Afternoon | E 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | E 15 - 25 |
| Tuesday Afternoon | E 15 - 25 |
| Tuesday Evening | E 15 - 25 |
| Tuesday Night | E 15 - 25 |
| Wednesday Morning | E 10 - 20 |
| Wednesday Afternoon | E 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | E 15 - 25 |
| Tuesday Afternoon | E 20 - 30 |
| Tuesday Evening | E 20 - 30 |
| Tuesday Night | E 20 - 30 |
| Wednesday Morning | E 20 - 30 |
| Wednesday 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 | |
|---|---|---|---|---|---|
| Tuesday Morning | SE 15 - 25 | SE 20 - 30 | ESE 30 - 45 | ESE 35 - 50 | ESE 25 - 35 |
| Tuesday Afternoon | SE 15 - 25 | SE 20 - 30 | ESE 35 - 50 | SE 35 - 50 | ESE 30 - 45 |
| Tuesday Evening | SSE 15 - 25 | SE 15 - 25 | SE 30 - 45 | SE 30 - 45 | SE 25 - 35 |
| Tuesday Night | SE 15 - 25 | SE 15 - 25 | SE 30 - 45 | SE 30 - 45 | ESE 25 - 35 |
| Wednesday Morning | ESE 10 - 20 | ESE 15 - 25 | ESE 30 - 45 | ESE 30 - 45 | E 25 - 35 |
| Wednesday Afternoon | ESE 5 - 15 | ESE 15 - 25 | ESE 30 - 45 | ESE 35 - 50 | ESE 30 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SE 15 - 25 |
| Tuesday Afternoon | SE 15 - 25 |
| Tuesday Evening | SSE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | ESE 10 - 20 |
| Wednesday Afternoon | ESE 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SE 20 - 30 |
| Tuesday Afternoon | SE 20 - 30 |
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | ESE 15 - 25 |
| Wednesday Afternoon | ESE 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | ESE 30 - 45 |
| Tuesday Afternoon | ESE 35 - 50 |
| Tuesday Evening | SE 30 - 45 |
| Tuesday Night | SE 30 - 45 |
| Wednesday Morning | ESE 30 - 45 |
| Wednesday Afternoon | ESE 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | ESE 35 - 50 |
| Tuesday Afternoon | SE 35 - 50 |
| Tuesday Evening | SE 30 - 45 |
| Tuesday Night | SE 30 - 45 |
| Wednesday Morning | ESE 30 - 45 |
| Wednesday Afternoon | ESE 35 - 50 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | ESE 25 - 35 |
| Tuesday Afternoon | ESE 30 - 45 |
| Tuesday Evening | SE 25 - 35 |
| Tuesday Night | ESE 25 - 35 |
| Wednesday Morning | E 25 - 35 |
| Wednesday Afternoon | ESE 30 - 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 Mar 18, 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.