* WHAT…Sub-freezing temperatures in the upper 20s to lower 30s.
* WHERE…South Central Pinal County, Southeast Pinal County, Tohono
O’odham Nation, and Tucson Metro Area.
* WHEN…From midnight tonight to 9 AM MST Wednesday.
* IMPACTS…Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.