Here is the Hi-Resolution Rapid Refresh Model (HRRR) showing the this 1st Wave coming through giving some of light snow North of Casper and Riverton until 10 AM Friday.
--Not a big snow, but Light Snow for sure in the Yellowstone Region (not shown), Bighorns, and Black Hills.
The Disturbance travels East along I-90 and just North of it in South Dakota and Central Minnesota.
NOT done yet, Our next wave (IMAGE BELOW) moves in from the West and ushers in more moisture for West of the Divide. Casper will stay dry and cool in the 30s for Friday, but could see an another round of snow for the Bighorns again Friday Evening.
The 1st Wave will be long gone crossing into Minnesota and Northern Iowa where it will weaken. Can't rule out an area of snow in the Sierra Madre's and Snowy's seeing light snow Friday Night.
Here is the RPM for 72-HRS out showing the total snow by Sunday Afternoon. West of the Divide will see a good amount, but Wind Rivers and Bighorns could get a good dumping with possible upslope.
What about Casper?...so far, Models are not fairing too well for us here. Could see more than a few inches, if best, on top of the Mountain.
MAIN DISCUSSION: I will be more concerned, not with the snow, but the Brutally Cold Temperatures along with it on Saturday Night. Arctic Air will be sliding in from the North and IF the skies clear and HOW much snow, some spots will dip below-zero.
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| 8AM SUNDAY MORNING TEMPS (NAM 0z Friday's Run) |
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