A Potentially Odd Storm System is on its Way to Wyoming

November 4th, 2020
The Opening to Weather Segments
The Opening to Weather Segments(KGWN)
Published: Nov. 4, 2020 at 12:04 PM CST
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We’ve all enjoyed the sunshine and unseasonal warmth the Cowboy State has seen so far this week, and we will continue to do so up until Friday. Come Friday things will still be plenty warm outside, but clouds will blanket Wyoming ahead of the arrival of our next storm system. The warmth will actually carry into Saturday as most locations top off with temperatures into the mid to upper 60s. Yes, the mid to upper 60s ahead of a cold front in November. It gets more bizarre, however. As the cold front pushes through Wyoming Saturday evening and brings rain to the state, temperatures for places like Cheyenne and Casper are expected to bottom out above freezing. This means that while rain may turn into snow during the overnight hours, it won’t get cold enough for it to stick. This of course comes after a week in which high temperatures camped out in the upper 60s and 70s for most of Wyoming. The warm ground conditions will help to prevent accumulations as well. Temperatures will climb back up into the 40s Sunday afternoon, so any snow still falling Sunday morning would likely turn back into a cold and unpleasant rain.

Now, things could change with this system VERY quickly. The number one thing to watch is the track of the low pressure itself. For now it is forecast to move through the northwestern part of Wyoming, keeping us in the warm sector. Places like western Montana however that are off to the northwest of the low are due for a dumping of snow, which in the current scenario Wyoming will avoid. This region to the northwest of a low is known as the deformation zone, which is where the heaviest snow falls in a winter storm. And sometimes in that region bands of heavy snow will set up. These bands are next to impossible to forecast, however if a meteorologist sees one setting up, typically forecast snow totals are bumped up by 6 or so inches.

The area circled in red southeast of the low is warm sector of the low behind the warm front,...
The area circled in red southeast of the low is warm sector of the low behind the warm front, and will likely lead to Wyoming seeing rain with this system. The area circled in black northwest of the low is the deformation zone, where the heaviest snowfall occurs. Wyoming is forecast to narrowly miss this.(Aaron Lowery)

Temperatures will be a lot cooler to start off next week, however for a lot of us they should still be a bit above freezing. It looks like a cold and gloomy weekend is ahead for Wyoming, however at this moment the impacts of this system look to be pretty minor. So long as temperatures remain above freezing, the icing of roads should be avoided.

CHEYENNE, Wyo. (Wyoming News Now) -

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