Storm moving in… Very slowly

Sunday, October 13, 2013 at 7:33 am

Another early season storm is moving into the area.  Snow is likely late today through tomorrow in the Wasatch/Uintas.  Gradual clearing will occur on Tuesday.

Cold front is moving into the area today.  The cold front will very slowly move in from the northwest, likely reaching the SLC area during the afternoon. You can see the precip associated with the front just starting to affect the western deserts at 7 AM MDT:

Image courtesy of WeatherUnderground

Image courtesy of WeatherUnderground

Snow levels will start out high today around 9K feet before crashing to 6K feet or lower tonight.  Tonight will be the meat of the storm with moisture behind the front and good ingredients for cold pool orographics keeping snow going for much of the night on northwest facing slopes.  Lake enhancement will again be a possible contributor to snowfall accumulations south/southeast of the GSL.

Reinforcing waves will rotate around the parent low keeping showers going through at least Tuesday morning.  While this system isn’t particularly moist or strong, its long duration may allow for significant (for October) accumulations.  I’m thinking total accumulations by Tuesday will be as follows:

  • Wasatch: 4-8″ above 7,000ft with more possible in favored locations.
  • Uintas: 5-10″ above 7,000ft

Later next week is still a tough call.  GFS keeps us cool but dry.  Euro is colder with another weak system affecting us late in the week.  Models have backed off on the idea of the storm door opening after the 20th of October, instead now showing strong ridging over the Western Continental US.   There are a couple typhoons in the western Pacific that we suspect are causing chaos in the models right now — so everything is subject to change.


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