November 10, 2017

MOUNTAIN WEATHER FORECAST

Time and Day: 0730 Friday 

The Snapshot:  Mostly dry with some sun breaks today.  The next round of precipitation begins tomorrow night and Sunday.   Temperatures will remain at or just above the freezing mark through Monday morning.  Active weather continues through most of next week.   

The Science

Current Observations:  .44” of water with 7” of snow fell over the last 24rhs. The morning fog is beginning to clear, the temperature is 290 f, the Rh is 94% and the barometer is 1008mb and holding steady, the winds are 6 mph out of the SE.  The front passed east of the crest last night around 6 pm which shifted the winds to the south and began the drying process. This morning’s radar has the bulk of the moisture heading south into Oregon.  

A weak high pressure ridge will move through the region today providing some clearing and a temporary dry period. The atmosphere will remain somewhat unstable so isolated showers will be possible.

A warm front followed by a cold front will enter the region late tomorrow night and or early Sunday morning.  Temperatures will start out on the warm side with freezing levels briefly bumping up to 5000’.  East flow with colder air streaming in from the NW will keep most of the moisture in the form of snow.   


The Long Range:  The main snow event starts late Sunday night into Monday with significant snow likely through the middle of next week.     

24hr Precipitation ending at 4 am:
Today 24hr water: 10  snow: trace
Tomorrow’s 24hr water: .25-.5   snow: 4-6

Trend and Timing:
Mostly dry today with snow beginning late tomorrow night.  


24hr temperature ending at 4 am: 
Low:  29   High: 36
Freezing level: +-4500’

Trend and Timing:   
Possible sun breaks today could push surface temperatures into the mid 30’s.   With the aid of east flow, freezing levels should hold near 4500’ through the weekend.

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

Trend and Timing:
Southeasterly flow aloft with the east flow at the surface will be the wind pattern through the weekend.


jM

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