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Snow Chances to Climb this Week

April 12th, 2021
The jet stream will begin to dip over the western US later this week, allowing a low pressure...
The jet stream will begin to dip over the western US later this week, allowing a low pressure system to begin to form west of the Rockies on Wednesday. This will bring some organized snowfall to Wyoming Wednesday morning before it intensifies later this week into a more powerful snowstorm.(KGWN)
Published: Apr. 12, 2021 at 12:04 PM CDT
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April began with more than its fair share of warmth, and the first full week of the month saw temperatures rise and fall like a rollercoaster with a trio of cold fronts bringing scattered snow showers to the state. That third cold front slammed the door shut on any warm conditions Saturday night, and now things are steadily declining as we go through the new week.

The jet stream drives everything in weather during the non-summer months, and a powerful trough looks to set up late this week, bringing Wyoming another snowstorm as well as drought relief. March and April tend to bring the most snow to Wyoming each year, and that pattern looks prevalent this year after a very dry and mild winter. Mid-March saw the record-breaking snowstorm that brought more than 30″ to Cheyenne and more than 2′ to Casper. Some Wyomingites were snowed in for more than a week, and the cleanup process most certainly took time. It is still fresh on the mind of most as another storm looms later this week.

The storm set to arrive later this week, however, looks to only share one similarity with that one in March, and that is wet and heavy snow. Temperatures during the afternoon will likely be above the freezing point, however given the high elevation of Wyoming the precipitation will likely still fall as snow, and accumulations will rack up during the overnight hours when lows drop into the lower and mid 20s. Before we even get to that storm though, the state will have many opportunities for snow showers this week as the jet stream begins to shift patterns and that trough builds in.

Today and tomorrow will mainly be isolated snow showers with little to no impacts. Some places may see nothing, and others may just see some flurries. As the low begins to form on Wednesday, snow will begin to organize a bit more, and showers look to mesh into one storm early Wednesday morning along the I-80 corridor. As of now this looks to scatter northward during the afternoon, ahead of the main snowstorm arriving on Thursday.

CHEYENNE, Wyo. (Wyoming News Now) -

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