...BITTERLY COLD CONDITIONS TO IMPROVE BY LATE MORNING...

.DANGEROUS WIND CHILLS WILL CONTINUE TO BE POSSIBLE EARLY THIS
MORNING IN FAR NORTHEAST IOWA AND NORTHWEST ILLINOIS. IN THIS
AREA...WIND CHILLS OF 20 TO 30 BELOW ZERO WILL CONTINUE THROUGH
MID MORNING. FARTHER SOUTHWEST...WIND CHILLS WILL CONTINUE TO
RANGE FROM 10 BELOW TO 25 BELOW ZERO OVER NORTHEAST MISSOURI...
WEST CENTRAL ILLINOIS...AND MUCH OF EASTERN IOWA THROUGH MID
MORNING TODAY BEFORE IMPROVING TODAY. THE WIND CHILLS WARNING HAS
BEEN DOWNGRADED TO A WIND CHILL ADVISORY FOR ALL BUT FAR NORTHEAST
IOWA AND NORTHWEST ILLINOIS. ALL WARNING AND ADVISORIES WILL BE
CANCELLED AS SOON AS WIDESPREAD WIND CHILLS CLIMB ABOVE -20.

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...

* TIMING...IMPROVING THROUGH THE MID MORNING IS EXPECTED.

* WIND CHILL READINGS...AS LOW AS 22 BELOW.

* TEMPERATURES...8 BELOW TO 6 ABOVE ZERO.

* WINDS...SOUTHWEST 5 TO 10 MPH.

* IMPACTS...FROST BIT WILL BE POSSIBLE THROUGH MID MORNING ON
  UNPROTECTED SKIN IN 30 TO 45 MINUTES OF TIME.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WINDS WILL
COMBINE TO GENERATE LOW WIND CHILLS...RESULTING IN FROST BITE AND
HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE
OUTDOORS...DRESS IN LAYERS COVERING EXPOSED SKIN. FROSTBITE WILL
OCCUR IN AS FEW AS 30 TO 45 MINUTES IN THESE CONDITIONS.