shallow fog

In weather-observing terminology, low-lying fog that does not obstruct horizontal visibility at a level 6 feet (1.8 meters) or more above the surface of the earth; this is, almost invariably, a form of radiation fog.

Related terms:

• fog scale
• shallow well
• ice fog
• fog horizon
• California fog
• sea fog
• advection fog
• radiation fog
• shallow-focus earthquake
• fog drop