Coldest and Strongest Yet

Wednesday, September 20, 2017 at 7:05 am

Summary:

Another trough is approaching the region and will impact the area with winds later today and Thursday.  A cold front will move through Thursday night into Friday with cold temps, valley rain showers, and mountain snow.  Cool for the weekend.

Details:

We cooled off again yesterday with another dusting of snow above 8,000 feet in the Wasatch and Uintas.  We warm back up again today ahead of our next trough which can be seen now heading down out of the northwest.

Note the spinning off the Olympic Peninsula of Washington.  The ‘spotted’ nature of the clouds around this core is indicative of cold and unstable air.

Winds will pick up later today into early Thursday ahead of the system.  Then, Thursday night the cold front itself will move through.  Latest models have the cold front stalling and pivoting a bit in far northwest Utah extending northeast into the Tetons and northwestern Wyoming.  The front weakens a bit before it moves into our area.  This could delay and somewhat limit our precip amounts. The latest NAM output:

Only light amounts for the Wasatch and Uintas with much more significant snowfall for northwest Wyoming and southern Montana.  Could be looking at well over a foot up there.  For Utah mountains, I’d say 1-3″ is most likely above 8,000 feet, but we could have isolated higher amounts. Snow levels could drop to 6k feet early Friday with dustings down to near upper bench levels.  This will include Park City and most mountain valleys so don’t be too surprised if you wake up Friday morning to a touch of snow.

Trough remains over the area for the weekend which should keep us cold and showery.

Extended:

It looks like we will gradually warm up next week. High pressure should take control as we close out the month of September and into early October. No need to rush winter. We’ve had a taste of it now but I wouldn’t mind some seasonable Autumn temps to get out and enjoy the changing leaves.

WSF

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