December 27, 2017

Mid Day Storm Update:

Time and Day:  0100  Wednesday



The approaching weather system is beginning to take shape.  Values from this morning’s forecast remain the same with some slight adjustments.  (see below)

Forecast:

Warm moist air out ahead of the approaching warm front will keep light precipitation falling through the day.  The main moisture event is expected after midnight with moderate snow starting around 2 am and continuing through the day.  

Freezing levels will rise have risen to 3500’ and are expected to hover there through the night.   Cool air to the east will help hold surface temperatures at or below freezing through most of tomorrow.  

The next warm front arrives late tomorrow afternoon/ evening.  Freezing level are expected to briefly bump up to 5000’ with a mixed rain and snow event expected tomorrow night. 

The good news is that a cold front swings in early Friday morning tapping into a nice fetch of moisture = Heavy SNOW.

Storm totals from Thursday 4am- Saturday 4am remain the same =  +-3” of water 15-30” of snow.   


24hr Precipitation ending at 4 a.m:
Today 24hr water: .25-.5  snow: 3-5
Tomorrow’s 24hr water: .75 - 1 snow: 8-10

Trend and Timing:
Light snow shower begins today and intensifies after midnight tonight. 


24hr temperature ending at 4 a.m: 
Low:22     High:26
Freezing level: 2000’-3000’

Trend and Timing:   
Freezing level are expected to reach 3000’ this evening and then 4000’ sometime tomorrow. 

 
24hr Winds (mph) ending at 4 a.m:
Base: 0-10 W shifting E
Ridge Top: 5-15 W shifting E

Trend and Timing:
Pass level winds will flip-flop from west to east over the next few days while the upper-level winds remain Westerly.

jM


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