Weekend Storm Will Bring Snow, Rain to Wisconsin
By Justin Poublon
February 23, 2018 - 12:30 PM CST | 19 0
Northwest Wisconsin is preparing for it's third snow storm in seven days
On Saturday night a deepening low pressure system will track along a familiar path straight across central Wisconsin bringing 6-9" of snow to northwest Wisconsin. Easterly wind gusts will increase through the night in northern/northeast Wisconsin possibly reaching 40MPH briefly at the peak of the storm. Mixed precipitation in the form of sleet or rain, or brief freezing rain may occur across central and northeastern Wisconsin. 0.25 - 0.75" rain for eastern and southern portions by sunrise Sunday. A rumble of thunder also possible in the east.
The storm will move through quickly. The best chance for precipitation is between 6 p.m Saturday and 6 a.m Sunday. The National Weather Service has issued a Winter Storm Warning for northwest Wisconsin.
- Snow - 6-9" in northwest Wisconsin. Snow could be briefly heavy at times. This includes locations such as Rice Lake, New Auburn, and Ladysmith. Snow totals decrease from Eau Claire to Wausau. Still some uncertainty for northeast Wisconsin where some models have more snow, others less. This is an area that may change on future forecasts.
- Freezing Rain/ Mix - Models show a short window for light freezing rain accumulation on storm onset around midnight Saturday in central and northeast Wisconsin. With rapidly changing conditions and warmer temperatures arriving immediately following on Sunday morning, I'm not terribly concerned.
- Wind - Easterly wind gusts will increase through the night reaching 40MPH of a short period near the peak of the storm. Winds turn southwesterly statewide Sunday with gusts up to 30MPH possible.
- Rain & Thunder - 0.25-0.75" of rainfall for the eastern and southern portions of Wisconsin, including Green Bay in the northeast. Thunder is a possibility in eastern Wisconsin Saturday night.
- This morning there was disagreement on location of the heaviest snows. With the 12Z run we saw the Canadian move closer to the GFS solution.
- The NAM remains the farthest northwest and slightly weaker. Given it's performance lately nudged our snow predictions slightly west to respect it, but with the GFS/CAN/EC on board for Wisconsin will not bend the forecast much.
- 40MPH wind gusts could lead to low-end blizzard conditions in northern Wisconsin if and only if we can get peak winds and heavy snow to happen together. Low confidence but possibility remains.
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