The National Weather Service in Paducah has now put parts of the Tri-State under a Winter Storm Warning now until 4:00 a.m. Tuesday. 

...WINTER STORM WARNING IN EFFECT UNTIL 4 AM CST TUESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
11 AM CST TUESDAY...

* WHAT...Heavy snow occurring. Very cold wind chills expected.
  Plan on difficult travel conditions. Additional snow
  accumulations of two to three inches are expected. Expect wind
  chills to range from 5 above zero to 15 below zero.

* WHERE...Portions of southern Illinois and western Kentucky.

* WHEN...For the Winter Storm Warning, until 4 AM Tuesday. For
  the Wind Chill Advisory, midnight to 11 AM Tuesday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in
  visibility at times. The cold wind chills will cause frostbite
  in as little as 30 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

*Keep in mind a Wind Chill Advisory will go into effect at 4:00 a.m. and will run until 11:00 a.m. Tuesday.