December 29, 2017

MOUNTAIN WEATHER FORECAST

Time and Day: 1200 Friday

The Snapshot:   Heavy snow will continue through the night and begin to taper off tomorrow afternoon.   

The Science

Current Observations: Its 28 degrees and snowing, the ridge top winds are light and out of the south/west with east flow kicking in at Pass level. The radar is lit up with heavy precipitation falling in the mountains.   

The Forecast:  The warm front lifting up from the south today will keep mild temperatures and moderate to heavy precipitation falling in the mountains through the day.   A cold front swings through tonight with cool unstable westerly flow filling in behind the front.  Convergence conditions are likely to develop tonight keeping the snow machine cranking. A high pressure ridge will move into place tomorrow afternoon virtually shutting off the spigot.    

The Long Range:   The New Year will start out clear and dry.  
    

24hr Precipitation ending at 4 a.m:
Today 24hr water: 1.5  snow: 14-17
Tomorrow’s 24hr water: .5 snow: 2-5

Trend and Timing:
Snow will continue through the night and begin to taper off early tomorrow morning.


24hr temperature ending at 4 a.m: 
Low: 26    High: 34
Freezing level: 4500’-3000’

Trend and Timing:   
Freezing levels will hover near 4000’ today and then drop to 3000’ after midnight tonight.

 
24hr Winds (mph) ending at 4 a.m:
Base: 0 -5 E shifting W
Ridge Top:

Trend and Timing:
Winds will shift westerly tonight with the passing of the cold front.



jM

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