Advertisement A frost advisory is in effect for the Baltimore area. The National Weather Service issued the alert for early Friday morning. It warns of potentially damaging cold for unprotected vegetation.The advisory will run from 1 a.m. until 8 a.m. on Friday. Forecasters predict temperatures could drop to 33 degrees. This level of cold is … Continue reading Baltimore Frost Advisory Urges Immediate Plant Protection as Temperatures Plummet