Weekend Weather Update for Sunday December 24, 2017 – Snow Morning until Evening Heaver in NWI 4″-8″

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National Weather Service

Sunday24

Snow will increase in coverage this morning and end by early evening. Travel impacts are likely across much of the area today, especially across northwest Indiana, the southern Chicago metro, and points south. Intermittent heavier bands of snow are possible south of Interstate 80 and also across Lake and Porter Counties where Lake Michigan may contribute. Lake effect snow that is. The worst conditions are expected between mid-morning and mid-afternoon across the area. If travelling, be prepared for intermittent heavy snow, slush and snow covered roads, and visibility which may fall below a mile. Snow will end for most areas before the evening, but some light drifting snow tonight may keep icy or snow covered conditions in place, especially for areas with higher snow totals. I would stay in and make sure there are plenty of cookies for Santa.
Sunday24Cold
Much colder air arrives after Christmas, helped in part by expected snow cover on the ground, especially along/south of I-88. Here is a look at forecast temperatures for Chicago. Wind Chill readings mid week will get close to dangerous levels.
Sunday
Snow. High near 25. Northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday Night
A chance of snow before 10pm, then a chance of flurries after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 17. West wind 10 to 15 mph. Chance of precipitation is 40%.
Christmas Day
A chance of flurries before 9am. Mostly sunny, with a high near 22. Wind chill values as low as 1. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 4. West northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 11.
Tuesday Night
Partly cloudy, with a low around 5.
Wednesday
Mostly sunny, with a high near 14.
Wednesday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 9.
Thursday
A chance of snow. Cloudy, with a high near 21.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 15.
Friday
A chance of snow. Mostly cloudy, with a high near 21.
Friday Night
A chance of snow. Mostly cloudy, with a low around 12.
Saturday
A slight chance of snow. Mostly cloudy, with a high near 19.
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