342 AM CDT THU APR 12 2012

…FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING FOR:

CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-AND DECATUR COUNTIES.

TEMPERATURES WILL REMAIN NEAR OR BELOW FREEZING UNTIL SHORTLY AFTER SUNRISE. TEMPERATURES IN MOST AREAS WILL BE IN THE MID 20S TO LOW 30S. THE SUB-FREEZING TEMPERATURES…THOUGH WIDESPREAD…ARE NOT AS EXTENSIVE AS THEY WERE YESTERDAY. NEAR TO BELOW FREEZING TEMPERATURES ARE EXPECTED FOR THE NEXT SEVERAL HOURS.

A HARD FREEZE IS LIKELY ACROSS THE NORTHEAST…WITH A LIGHTER FREEZE LIKELY ELSEWHERE. RIVER VALLEYS AND LOW AREA ARE LIKELY TO SEE A HARD FREEZE. YOUNG TENDER VEGETATION WILL BE DAMAGED OR KILLED UNLESS PROTECTED IN MANY OF THESE AREAS.