Final Round of Snow Will Last through Friday
April 15th, 2021
The second wave of snow associated with they system impacting Wyoming this week came though last night and into this morning, bringing accumulating snowfall to much of Central and Northern Wyoming as well as parts of the I-80 corridor towards Central Wyoming. That wave has tapered off as the later morning hours have arrived, and now more snow is beginning to fall over the Southeastern part of the state. This is where the majority of the remaining snowfall will occur, resulting in accumulations ranging between 3 and 7 inches for the region.
For Cheyenne, the snow will likely begin during the early lunchtime hours today, and only get heavier as the day progresses. Accumulations will likely begin on the grass and on rooftops shortly after snowfall begins, but with temperatures hovering near the freezing point during the afternoon, accumulations on the roadways will take some time. We will likely begin to see those during the evening hours as temperatures drop back below 30 degrees heading into the overnight hours. As temperatures drop, snow ratios will also rise, meaning the amount of snow per inch of rainwater will increase as the snow becomes heaviest during the overnight hours. Peak ratios will occur during the early morning hours of Friday. At this time, Cheyenne is expected to receive somewhere in the 4-6 inch range, with some areas potentially seeing a bit more.
For Casper, we have already seen some accumulation this morning thanks to that overnight second wave. Accumulations racked up quickly this morning, even on the roadways, as temperatures held in the mid 20s. This could support immediate accumulations later when the final round begins later this afternoon on roads that were not plowed, as the snow in place will prevent melting. Casper will also see the highest ratios during the early morning hours of Friday, but the heaviest snow is expected overnight tonight as things begin to scatter Friday morning. Casper will likely receive somewhere in the 3-5 inch range in addition to whatever the city got overnight last night and this morning.
Fremont County remains the tricky one given how far it is from the low during this final round. Winter Storm Warnings remain in effect for the northern half of the county until noon today and the southern half until midnight. Snow is expected to hang around Lander a bit longer, allowing for more accumulation. Fremont County has already seen some decent snowfall with the second wave that moved through last night as well, but with what is left another inch or two can be expected in Riverton with closer to four or five possible in Lander.
The snow should be done by Saturday morning, and given everything we have seen and will see this week, the only place that may see a foot would be Lander, with most locations seeing around or less than half a foot of snow with the exception of areas like the Snowy Range. Sunshine will return for many Saturday afternoon which will allow melting as temperatures climb above freezing. Even more melting will be possible Sunday with temperatures back in the 40s, however a new system may be bringing in snow from the north beginning Sunday evening and lasting through the afternoon on Monday.
CHEYENNE, Wyo. (Wyoming News Now) -
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