MOUNTAIN WEATHER FORECAST

Time and Day: 0830 Saturday

The Snapshot:  Snow today diminishing to light snow showers overnight.  More snow arrives tomorrow night with next week trending dry.

The Science:  Two low-pressure troughs will swing through the Cascade Mountains over the weekend.  Cooler temperatures, northwesterly flow with light to moderate snow will fill in behind these fronts.  A brief lull will occur overnight with the next frontal system arriving tomorrow night.  

The Long Range:  Long range model are now building a high pressure ridge over the PNW starting on Monday.  This is a significant change in the forecast models and they don’t sync up very well.  So as of now, with the exception of a weak system moving through on Wednesday night, next week will be mostly dry.

Precipitation Ending at 4am: Today 24hr water = .25  Snow = 1-3 Tomorrow’s 24hr water = .5 snow = 3-5 Trend and Timing: Light rain and snow today below 4500’.   The precipitation will diminish tonight with the next wave of snow arriving after 4pm tomorrow afternoon.

24hr temperature ending at 4 am tomorrow:                                        Low: 26    High: 34 Freezing level: +-4500’  - 3500’ Trend and Timing:    Freezing levels will fall overnight as NW flow develops.

24hr Winds (mph) ending at 4 am tomorrow: Base: 0-5 E Ridge Top: 0-10 ESE Trend and Timing: East flow will persist today and slowly shift westerly tomorrow.

jM