WET SNOW FOR MANY TONIGHT...
A weather system is expected to move into the area overnight bringing a period of snow or mixed rain and snow that changes to rain Tuesday.
Across the south where temperatures will be marginal, especially south of I-80 accumulations are likely to be minimal and the snow or mix should be relatively short lived before the transition to rain.
Across my central counties, from HWY 30 north the cold air currently in place will be slower to retreat and chances for a longer period of snow are much greater. As a result, accumulations of an inch or two are expected before the rain arrives Tuesday morning. From HWY 20 north where the snow could linger into early afternoon, a few places could see up to 3" of wet accumulation.
All models are in agreement that enough warm air will be injected into the system aloft to warm temperatures above freezing and rain or drizzle takes over from south to north by Tuesday afternoon in all locations. Temperatures will climb well above freezing allowing road conditions to quickly improve where snow accumulates. Here are some of the latest snowfall forecasts as of early afternoon. Remember, this is just raw model output and is intended to be used as guide. I would lean hardest on the EURO. No matter what, this is a tough call due to the uncertainty of how quickly any snow changes to rain.
THE NAM 3k
The GEM (Canadian)
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