MOUNTAIN WEATHER FORECAST

Day and Time: Thursday 10:00

The Snapshot:  Rain today, rain showers tomorrow, dry on Saturday.  Rain on Sunday.  High mountain snow early next week???

Current Observations:

Precipitation: Raining 

Pass temperature: 42

Winds: 0-10 W

Barometer:  1017mb falling

Sky: overcast

Radar: Rain tracking west and south of Stevens Pass. 

The Forecast:  The rain will increase today with temperatures reaching into the upper 40’s.  The rain tapers to showers through the day tomorrow.  Saturday will be mostly dry with some sun breaks.  Clouds increase Saturday night with rain re-entering the scene on Sunday.

 Long Range: Cooler with a chance of some mixed rain and snow is developing for the start of next week.    

  

The Science: The leading edge of the approaching frontal system is just making landfall. The precipitation is tracking west with the southern ½ of the state getting most of the moisture at the moment.  The temperatures have mixed to occlude the leading front so temperatures will remain fairly constant through the next 24hrs.   Increasing pressure gradients will bring and end to the steady moisture tomorrow.  A weak high pressure ridge will bring dry and partly sunny conditions to the mountains on Saturday.      

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: +-1.75”  snow:0 Tomorrow’s 24hr water: .25-.5  snow:0 Trend and Timing: Heavy rain through the night, showers tomorrow.

Temperature: Low: 40    High: 50 Freezing level: +- 7000’ Trend and Timing:    Temperatures will dip to the upper 30’s tonight and rebound into the mid to upper 40s’ tomorrow.

Winds Base: 0-5 SSW Ridge Top: 5-15 WSW Trend and Timing: Winds will be fairly light and out of the SW today.  Ridge top winds increase tomorrow with gust + 20mph possible.