The National Weather Service has announced a Freeze Watch for the cities of Santa Barbara, Montecito and Carpinteria overnight on Wednesday, Feb. 23. Sub-freezing temperatures are forecasted starting late tonight and into Thursday morning. Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Residents should take steps now to protect tender plants from the cold, and plan for extra time to defrost vehicle windshields.