Hard Freeze Warning issued February 22 at 8:56PM MST until February 23 at 9:00AM MST by NWS Tucson
Eastern Cochise County Below 5000 Feet including Douglas, Willcox; Southeast Pinal County including Kearny, Mammoth, Oracle; Tucson Metro Area including Tucson, Green Valley, Marana, Vail; Upper Gila River and Aravaipa Valleys including Clifton, Safford; Upper San Pedro River Valley including Sierra Vista, Benson; Upper Santa Cruz River and Altar Valleys including Nogales
...HARD FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM MST SATURDAY...
* IMPACTS...These temperatures will damage sensitive and
unprotected plants, and damage unprotected outdoor plumbing.
Untreated road surfaces may refreeze, causing hazardous
driving conditions. Power lines and tree limbs may develop a
layer of ice which could cause potential power outage
* TEMPERATURES...Low temperatures in the low to mid 20s across
the lower elevations of Cochise, Graham, Greenlee and Santa
Cruz Counties. Low temperatures in the mid to upper 20s across
eastern Pima and southeastern Pinal Counties.
* TIMING...Temperatures will be the coldest when the greatest
sky clearing occurs. This will generally be between 4 am and 8
am MST Saturday morning.
* For a detailed view of the hazard area...visit
weather.gov/Tucson and click on the Detailed Hazards Icon
A Hard Freeze Warning means widespread temperatures at or below
28 degrees are expected...with sub-freezing temperatures expected
for several hours. 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. These conditions will also kill crops
and other sensitive vegetation.