January 11, 2017

MOUNTAIN WEATHER FORECAST

Time and Day: 0630 Wednesday

The Snapshot:  A few more dry and cold days before a prolonged warming trend begins; moisture enters the scene late Saturday night or Sunday. 

The Science: While the southern half of the State gets snow, the northern half is cold and beginning to clear.  The moisture will continue to drift south into Oregon today as high pressure builds off of the NW coast.   Freezing levels will slowly begin to rise as warm air drifts up the western slopes in response to the easing and rising pressure gradients.  The next few mornings will continue to be cold and clear, but the days should warm up nicely into the mid 20’s or so.     

The Long Range:  The focus turns to the weekend with the jet stream shifting its pattern to a warmer west /southwest orientation.  Strong SW flow will scour out the cold air with moisture entering the mountains late Saturday night or Sunday.   Long-range models have freezing levels rising above 4500’ early next week.    

Precipitation Ending at 4am:

Today 24hr water = 0 Snow = 0

Tomorrow’s 24hr water = 0 snow = 0

Trend and Timing:
Mostly dry through Saturday.


24hr temperature ending at 4 am tomorrow: 
Low: 10    High: 18
Freezing level: +- 500’

Trend and Timing:   
Cold air will remain in place through noon tomorrow.

 
24hr Winds (mph) ending at 4 am tomorrow:
Base: 0-5 E  
Ridge Top: 5-10 E

Trend and Timing:
Pass level east winds will weaken today but remain easterly through tomorrow.   Watch for some gusty ridge top and down slope winds this morning.




jM

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0800 Sat Feb 7th, no ABS