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Fog Dissipation Curve for Visible (LA) Visible imagery with default visible enhancement (top), LA enhancement (bottom) Forecasting fog dissipation Use 1 to 1.5 hours after sunrise Differences in visible brightness counts relate to fog dissipation rates when no intervening clouds are present See reference below for the complete description of this technique: Gurka, J., 1978: The Use of Enhanced Visible Imagery for Predicting the Time of Fog Dissipation. Preprints, Conference on Weather Forecasting and Analysis and Aviation Meteorology, October 16-19, 1978, Silver Spring, MD. Pages 343-346 How to create this enhancement in AWIPS