October 24, 2018

MOUNTAIN WEATHER FORECAST


 Day and Time: Wednesday 10:00

The Snapshot: The Pass got a few sprinkles of rain last night with the clouds starting to thin.  Today will be mostly dry with real rain moving in tomorrow.  If you are in need of snow, the Canadian Rockies are getting plenty.

Current Observations:
Precipitation: .10” 
Pass temperature: 40
Winds: Westerly 5-15 mph
Barometer: 1016mb steady
Sky: Cloudy
Radar: Dry with tomorrow’s rain off shore about 100miles.

The Forecast:  Moderate rain will begin around sunrise tomorrow with heavy rain expected tomorrow night into Friday.  The steady rain shifts to showers Friday night into Saturday.  Rain totals by Friday could exceed 3”.    

 Long Range: Saturday will be mostly dry with a few remnant showers in the mountains.  The next wetting system moves in on Sunday with a rainy period finishing out the month.  There may be a chance of snow on Monday, stay tuned.
  
The Science:  The stubborn high pressure will finally flatten and drift east over the next 24hrs. This will open the door for a series of fronts that will begin to charge toward the PNW.

The leading warm front will push on shore tomorrow with a strong SW fetch of moisture in tow.  A following cold front will cut off the steady stream of moisture late Friday with slightly cooler temperatures and intermittent showers filling in on Saturday.   Another similar event is taking shape for Sunday/Monday.

Freezing levels will remain well above Pass level through the weekend. There are some signs of a cooler airmass dropping freezing levels below 4000’ early next week. Stay tuned as those details become more developed.     
 
 Values from 4am today through
 4am tomorrow.
Precipitation:
Today 24hr
water: .10  snow:0

Tomorrow’s 24hr
water: 1-3  snow: 0

Trend and Timing:
Rain start after 4am tomorrow and intensifies through the day.

Temperature:
Low: 35   High: 50
Freezing level: 6500’ -

Trend and Timing:   
Freezing levels could peak above 7000’ tomorrow afternoon.  Mild temperatures will remain through the weekend.

 
Winds
Base: 5-10 SWS
Ridge Top: 5-15 WSW

Trend and Timing:
Winds will be gusty at times but not significant.


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