It’s a little too soon to tell if the morning’s subzero temperatures will be followed by a few more inches of snow this weekend, Northern Illinois University Meteorologist Gilbert Sebenste said.
The storm system that dropped almost 2 1/2 inches of snow on DeKalb County early Wednesday preceded an arctic air mass that was expected to push temperatures as low as minus-10, with wind chills between minus-15 to minus-20, Sebenste said.
“For the early risers, you get a nice present from the atmosphere, and you’re not going to like it,” Sebenste said.
Those temperatures and wind chills, driven between 4 and 7 a.m. by winds from 10 to 20 mph, are severe enough to cause frostbite within minutes on exposed skin.
It’s also dangerous for animals.
The National Weather Service issued a wind chill advisory from 3 p.m. Wednesday to 5 a.m. today.
“Even if your animal is an outdoors animal and likes to spend the overnights outside, when it gets this far below zero, most dog shelters cannot stay reasonably warm,” Sebenste said. “Bring anything that’s alive inside, that’s my advice.”
The highs today should reach about 18 this afternoon, while Friday’s temperatures will hit the mid-20s.
But a storm system brewing Wednesday in the Pacific Ocean could ultimately bring 3 to 5 inches of snow, although it was too early Wednesday to tell where, Sebenste said.
He expected meteorologists would have enough details this afternoon to predict where the snow could fall Friday evening and Saturday.