UPDATE 9:44AM FRIDAY, NOV. 20
Don’t expect the snow until around 9 p.m.
The National Weather Service Chicago upgraded its Winter Storm Watch to a full-out warning Friday morning (Nov. 20, 2015), saying the first accumulating snow of what is expected to be a big weather event will start later than experts were calculating on Thursday.
The Winter Storm Warning is in effect from 9 p.m. Friday, Nov. 20, to 3 p.m. Saturday, Nov. 21.
In total, 4 to 8 inches of snow are expected. Warm ground temperatures are expected to limit initial accumulation Friday night, but snowfall rates are expected to escalate overnight through Saturday.
The potential exists for difficult driving conditions and sharply reduced visibility.
“The first accumulating snow of the year can catch motorists off guard,” the Weather Service says. “Ensure to plan accordingly and use extra caution if traveling.”
A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.
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ORIGINAL POST THURSDAY, NOV. 19
The National Weather Service Chicago says we could get 4 to 7 inches of snow in the first big winter storm of the season Friday night and Saturday morning, Nov. 20 and Nov. 21, 2015.
A Winter Storm Watch is in effect for Kane County and the surrounding area. According to the NWS, a low pressure system will quickly move east of the Rockies Friday afternoon and approach this area Friday evening, probably hitting around sunset, and start with a “snowy mix.”
Soon after that, full-out snow arrives, and as temperatures drop, it will start to accumulate, the NWS says.
As of Thursday morning, the NWS could not predict the exact track of the snow storm or its intensity, so snowfall totals could fluctuate. That said, the effected counties include Kane, Winnebago, Boone, McHenry, Lake, Ogle, Lee and DeKalb.
The primary danger is from difficult driving conditions and reduced visibility.