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You may have recently heard about the Winter Storm, now named "Caly", forecast to affect the North West on Saturday, Mid West on Sunday, and Great Lakes / North of the North East (North of PA) on Monday generally dumping 3-5" of snow in it's path.
Projected Snowfall Totals:
Projected snowfall totals range from 1-4" in the West, and grow up toward 10" across areas close to the Great Lakes ie Chicago. The Storm will gradually head Eastwards, as it does so it will pick up more energy from the South, turning some of the snow back to rain on Monday. However, away from the immediate Coast (New York gets a wintry mix), it will fall as mostly snow with at least 1-4" in the moderately affected areas.
The highest snowfall totals are likely to be in parts of West Michigan, NW PA and West NY, but specifically Southern Michigan where 20 inches could be on the ground by Tuesday, due to the added lake effect showers dumping an initial few inches.
The rain / snow boundary is likely to be 200 miles from the East Coast, although the first energy (named Caly), will be mostly fine powdery snow and falling only as Snow where it does fall in Northern Indiana, Illinois, Ohio and PA, the second area of energy forecast to arrive on Monday will be somewhat more of a wintry mix of sleet, rain and wet snow for these areas, however is likely to remain as (at least wet) snow for the Great Lakes.
This second bout of energy which will join the main energy on Monday will be more of a wintry mix for states further South whom originally saw snow.
This second bout of energy will also start off as snow, however will transition to rain and sleet for most areas during Monday before transitioning back to at least Wet Snow for areas South of Buffalo, however North of Buffalo expect an all snow event, as this transition to and from Snow will not affect you on Monday.
If your snow falls Saturday: powdery / fine.
Sunday: powdery / fine.
Monday: Powdery North of Chicago, South of Chicago wet and mixed with sleet.