Building a Weather-Ready Nation
A quick moving system will bring snow to the region today and tonight. Snow is already beginning to fall in the western mountains...this activity is expected to continue through the evening with over a foot of snow possible across the higher elevations and 2 to 4 inches across much of the western valleys...with locally higher amounts expected in areas favoring westerly flow. A cold front associated with this system will move west to east across the area this evening...bringing snow east of the divide and setting up a period of upslope flow in Casper, Lander, Riverton, and Jeffery City this evening.
The picture on the left shows the GFS's solution for 6 hour snow amounts from Friday evening through early Monday morning. The picture on the right is the snowfall forecast for today and tonight.
CLICK IMAGE TO ENLARGE Image Key: Light Purple = Less than 1 inch of snow accumulation during the 3hr period Gray = 1 to 2 inches Yellow = 2 to 3 inches Blue = 3 to 6 inches CLICK IMAGE TO ENLARGE
The above animation shows the 6 hourly snow accumulation from the GFS model. The loop begins at 06Z Saturday (or 11pm Friday) and ends at 12Z Monday (or 5am monday)
This picture shows roughly how much snow you can expect where you live. Locally higher amounts are expected.
A Sampling of Possible Snow Accumulation ranges (inches):
Alpine: 3-6 (advisory)
Moose: 3-6 (advisory)
Riverton: up to 2
Dubois: up to 2
Rock Springs: up to 2
CLICK IMAGE TO ENLARGE
Light Purple = Less than 1 inch of snow accumulation during the 3hr period
Gray = 1 to 2 inches
Yellow = 2 to 3 inches
Blue = 3 to 6 inches
CLICK IMAGE TO ENLARGE
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