* WHAT...For the Frost Advisory, temperatures as low as 32 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 27 possible. * WHERE...A portion of southeast Michigan. * WHEN...For the Frost Advisory, until 8 AM EDT this morning. For the Freeze Watch, from late tonight through Saturday morning. * IMPACTS...Frost and freeze conditions could harm crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive ou