* WHAT…Sub-freezing temperatures in the lower 30s possible.
* WHERE…In Arizona, Parker Valley. In California, Palo Verde
Valley.
* WHEN…From midnight MST /11 PM PST/ tonight to 9 AM MST /8 AM
PST/ Wednesday.
* IMPACTS…Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.