* WHAT...Sub-freezing temperatures as low as 32 expected.
* WHERE...Eastern Juab/Millard Counties, Sanpete Valley, Western Millard and Juab Counties, Eastern Box Elder County, and Southwest Utah.
* WHEN...From 9 PM this evening to 9 AM MDT Wednesday.
* IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.