Summary:

We have a significant precipitation event taking aim for northern Utah, eastern Idaho, Wyoming, and southern Montana through Saturday. Winter-like temperatures will take snow levels down to as low as 8,000 feet by Friday evening. We'll have a few lingering showers on Saturday before sunny skies and warmer temperatures return for the week of September 25th-30th. 

Details:

It's now officially fall but our upcoming storm will make it feel a lot like winter. Even though snow levels will stay on the higher side for this event, we are looking at over an inch of precipitation through Saturday night. Here's a look at just one model run of total precipitation for the Tetons and the surrounding regions. 

Not bad, eh?

In regards to snowfall, the highest elevations could see quite the fresh coat of white once this is all said-and-done. The following point forecast is from the National Weather Service for Jackson Hole Mountain Resort. I do think it's slightly overdone so take it with a grain of salt. 

Two other variables of importance will be the freezing level and wind speeds. Temperatures will start out warm on Thursday night and into Friday but they will quickly drop as our flow eventually transitions to out of the northwest. We should see snow fall to as low as 8,000 feet on Friday night and possibly even lower under the heaviest showers. For winds, gusts of 40-50 mph are possible during the day on Friday for the resort. 

Overall, we have quite the system moving through the region to kick off the fall season!

Temperatures will stay on the chillier side come Sunday but any precipitation should be behind us. Temperatures will warm up through next week under mostly sunny skies. Our next possible system looks like it could affect the region around October 1st or 2nd.

Thanks for reading and enjoy the storm!

SAM COLLENTINE

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