Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing.

HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... ...HARD FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM MST TUESDAY... * WHAT...Temperatures in the upper 20s expected. * WHERE...Portions of south central and southwest Arizona. * WHEN...For the first Hard Freeze Warning, until 9 AM MST this morning. For the second Hard Freeze Warning, from 1 AM to 9 AM MST Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.