January 21, 2017

MOUNTAIN WEATHER FORECAST

Time and Day:  0730 Saturday

The Snapshot:  Lightly snowing with 1” of fresh snow this morning.  We can look forward to intermittent snow showers and sun breaks for the remainder of the weekend.  Dry and clear weather begins on Monday.

The Science:  Satellite imagery has scattered snow showers rotating around an offshore stationary low.  Bands of moisture will continue to move north as the low-pressure cell slowly drifts southeast into Oregon over the next few days. The bulk of the moistures is expected to remain along the eastern slopes with more accumulation east of the Cascade Crest possible. 

Freezing levels to the east have settled around 2500’ with 3500’over the western slopes; this will continue to produce east-west pressure gradients and thus, periods of gusty easterly winds.   

The Long Range:   Dry and clear weather develops on Monday as high pressure strengthens over the PNW.   The blocking ridge of high pressure is expected to dominate the weather pattern for all of next week.

Precipitation Ending at 4am:

Today 24hr water =  .25 Snow = 2-4

Tomorrow’s 24hr water = .25  snow = 2-4

Trend and Timing:
Passing snow showers will continue through early Monday morning.


24hr temperature ending at 4 am tomorrow: 
Low: 24    High: 32
Freezing level: +-2500’

Trend and Timing:   
Temps will be consistent with normal daytime warming.

 
24hr Winds (mph) ending at 4 am tomorrow:
Base: 5-10 E
Ridge Top: 5-15 E

Trend and Timing:
Periods of gusty easterly winds will continue today and tomorrow. 




jM

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