403 AM CST MON JAN 6 2014

…WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TUESDAY FOR ALL BUT EXTREME WESTERN/SW IA (IN MONONA-HARRISON-SHELBY-POTTAWATTAMIE COUNTIES, THE WARNING EXPIRES AT MIDNIGHT TONIGHT. IN MILLS, MONTGOMERY, FREMONT AND PAGE COUNTIES, THE WARNING EXPIRES TONIGHT AT 6 O’CLOCK.)

* SHORT TERM TRENDS…NORTHWEST WINDS OF 20 TO 35 MPH AND HIGHER GUSTS…COMBINED WITH TEMPERATURES 10 TO 20 BELOW ARE CREATING WIND CHILL VALUES FROM 35 TO 50 BELOW ZERO ACROSS THE REGION. THE COLDEST OF THESE READINGS IS OCCURRING OVER NORTHERN IOWA.

* WIND CHILL VALUES…THE MOST EXTREME AND LIFE THREATENING CONDITIONS ARE EXPECTED THROUGH THIS MORNING WITH WIND CHILLS FROM 35 BELOW SOUTH TO 55 BELOW NORTH. OVER CENTRAL IOWA WIND CHILLS WILL DROP TO AROUND 40 TO 45 BELOW.

* IMPACTS…EXTREME WIND CHILLS OF THIS MAGNITUDE CAN RESULT IN FROST BITE IN MINUTES AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF EXTREMELY COLD AIR AND STRONG WINDS WILL CREATE LIFE THREATENING LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN.