Weather Alerts For Welcome, MD

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1015 PM EST Sat Dec 6 2025 Charles-St. Marys-Calvert- 1015 PM EST Sat Dec 6 2025 ...FREEZING FOG ADVISORY IN EFFECT UNTIL 9 AM EST SUNDAY... * WHAT...Visibility one quarter mile or less in freezing fog. * WHERE...Calvert, Charles, and St. Marys Counties. * WHEN...Until 9 AM EST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. Dense fog with sub-freezing temperatures could cause surfaces to quickly become slick. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&