Forecasting Radiation Fog at Elkins, W. Va.

Abstract

Charts based on variables selected from data available on the preceding evening are developed for forecasting radiation fog at Elkins, W. Va., for autumn and winter months. The variables found useful in forecasting this fog include gradient wind velocity, surface temperature, and dew point depression. One of the interesting findings is that on relatively clear nights easterly gradient winds are more favorable for the formation of radiation fog than are westerly gradient winds. This and other physical aspects of the formation of the fog are discussed.