OBSTRUCTION TO VISIBILITY

Obstructions to visibility are only shown if they are forecast to occur. If the forecast visibility is expected to be 6 statute miles or less, an obstruction to the visibility is forecast. The types of obstructions that may be forecast are listed below.

Fog
Dense Fog
Patchy Fog
Patchy Dense Fog
Blowing Snow
Blowing Dust
Smoke
Haze