The National Weather Service has posted a Winter Weather Advisory for Thursday night and Friday that includes most of the Chicago area.
Snow should begin to fall between 8 p.m. and 1 a.m. Thursday night. On Friday, the snow will eventually change over to freezing drizzle or a mix of snow and freezing drizzle. Snowfall accumulation between 2″ and 5″ is expected.
One model indicates 5.5 inches at O’Hare International Airport, the city’s official recording station. Our biggest snowfall so far this winter was 2.7 inches on Feb. 3 and 4.
The sprawling low pressure is crossing the Rockies and is expected to produce more than a foot of snow over a swath of Nebraska and Kansas, potentially extending east into Iowa and northern Missouri.
Chicago’s anemic seasonal snow tally of just 10.9 inches is 40 percent normal. Chicago has yet to record a single 3-inch or greater snowfall this season, the first time that has happened in 27 years.
Meanwhile, temperatures Wednesday are to continue below normal for another day, but with reduced winds. The winds are to blow at one quarter to one half of Tuesday’s velocities. That should act to make the predicted 20-degree high not quite as frigid feeling as Tuesday’s afternoon teens and sub-zero wind chills.