Winter storm Toby, now near far eastern Nova Scotia, will exit via the Labrador Sea tonight. This will be a heavy, wet snow. Lows drop to the lower 20s, so there may be some refreezing of any of the slush on the roads, but the wind should work in our favor.
There are Winter Storm Warnings/Advisories for up to 9-inches of heavy wet snow continue in effect for many counties south and west of Chicago until later Saturday evening. A few mixed rain and snow showers will pop over the mountains in the afternoon, and one or two will drift down over the lower elevations.
"There is going to be a sharp cut-off from the heavy band of snow, which is why the 1" to 3" band surrounds the main track. Winds are expected to become sustained near 15 miles per hour, with gusts up to 25 miles per hour possible.
The snowfall map shows our expectation (as of Friday night) for where the snowfall should line up.
Snow will end this evening. Widespread 6 to 10 inch snow amounts are expected with isolated snow amounts around 15 inches possible. Although some freezing rain and snow will fall in extreme northern Montana, the only watches or warnings in the state are related to flooding because of snowmelt and ice jams. Heavy snow is indeed likely especially north of Highway 30, but we simply can't be very confident the exact location of the highest totals. If you have an Apple device, you can download it here.