Accumulating snow ending west to east across the Chicago-area Sunday

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Update 5:30AM CST…

Snow will be ending from west to east this afternoon with an additional accumulation of an inch or two possible, perhaps a little more closer along the Lake Michigan shoreline. Tonight accumulating lake-effect snow showers will likely continue in northwest Indiana. The Winter Weather Advisory close-in will end early this afternoon from Chicago – north and in northwest Indiana this evening-later tonight. With temperatures falling into the teens area-wide, snow will stick and highways, especially side roads and streets/sidewalks could be slick, so take appropriate precautions if out and traveling.

A cold front will move east and south of the Chicago area by midday with winds shifting north-northwest. There is upper-level support for continuing snow across our area this Sunday morning then that impulse moves east with the cold front this afternoon, leaving northwest winds area-wide supporting additional lake-effect snow showers in northwest Indiana which should slack off later tonight from west to east.

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Accumulating snow is forecast to spread from west to east across northeast Illinois into northwest Indiana tonight, gradually ending from the west Sunday. A Winter Weather Advisory (purple-shaded area on the highlighted map) for 2 to 4-inches of snow is in effect later this evening overnight into Sunday for close-in counties around the Lake Michigan shoreline. Farther away from the influence of the lake, snowfall totals will be more on the order of 1 to 3-inches. Snow will end from the west Sunday with the Winter Weather Advisory ending around noon in counties north of Chicago and 3-6 PM in Chicago south and east into northwest Indiana.

A center of low pressure will move east out of the plains tracking across Chicago later tonight, shifting east of our area Sunday. System snow will be enhanced by lake-effect snow showers, as the low pressure moves overhead and just to our east and winds swing around to the north-northeast and then northwest – hence the greater snowfall expected along counties adjacent to Lake Michigan .

If planning on travel, prepare for snow-covered roads and slick driving conditions developing this evening and continuing into Sunday.