Fog Alert

Dense fog is causing delays this morning. Please be extra cautious when driving. Use of headlights and or fog lights are recommended for vehicles. What is fog? Fog is a cloud near the ground. The same processes that produce clouds thousands of meters above the ground can produce clouds near the surface. Both fog and clouds form when the atmosphere can no longer hold all of the moisture it contains. This happens when 1) the temperature of air drops to its dew point, which is the temperature at which air is holding as much moisture as it can, or 2) the amount of moisture in the air increases until the air reaches its dew point. Once air has reached its dew point, the water in it condenses, forming tiny water droplets that we see as fog. Fog is a hazard mostly for one very important reason: reduced visibility. Airport delays, […]