HOME FORECAST PAST WEATHER SAFETY INFORMATION EDUCATION NEWS SEARCH ABOUT Safety National Program Fog Safety Overview Weather.gov > Safety > Fog Safety Overview Fog Safety Fog Advisories Driving in Fog Boating in Fog Flying in Fog Fog Resources Fog safetyFog Over WaterMountain/Valley FogSuper FogFreezing FogAdvection FogRadiation FogLinks and Partners Fog, particularly when dense, can be hazardous to drivers, mariners and aviators. Fog contributes to numerous travel accidents every year. Restrictions in visibility resulting from fog can also impact takeoff and landing procedures and requirements for pilots, and can be the cause of weather-related aviation delays. This website offers information on the hazards of dense fog and how to stay safe. If you, or someone you know, have been in a fog related accident, please share your story so we can prevent others from becoming a victim. When you write, please note that NWS has permission to use your story and, if possible, let us know the town and state you were in and the year the event took place. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Safety 1325 East West Highway Silver Spring, MD 20910 Comments? Questions? Please Contact Us. Disclaimer Information Quality Help Glossary Privacy Policy Freedom of Information Act (FOIA) About Us Career Opportunities