A freeze warning has been issued for a large portion of the eastern US. Temperatures are forecast to drop into the upper teens across portions of Kansas and Missouri the the low 30's in Louisiana, Mississippi, and Alabama. Here at home, temperatures will likely drop into the mid and upper 20's Tuesday and Wednesday mornings. The areas shaded in light blue are under the warning. Here is a statement from the NWS in Indianapolis.
IN THE WAKE OF A DEPARTING LOW PRESSURE SYSTEM...UNSEASONABLY COLD AIR WILL BE DRAWN SOUTH FROM CANADA AND INTO CENTRAL INDIANA... RESULTING IN LOW TEMPERATURES FALLING INTO THE UPPER 20S TO AROUND 30 FOR SEVERAL HOURS ON MONDAY AND TUESDAY NIGHT. A WIDESPREAD FREEZE IS EXPECTED ON BOTH NIGHTS.
A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION.