Fading Curves and Weather Conditions

Sunset fading curves from Station KDKA were made at Morgantown with a Shaw Recorder during April and May, 1927. The curves taken on fine days show more irregularity during the daylight hours than those taken on cloudy days. It was found that the signal strength from KDKA during the dark hours sometimes fell far below the daylight strength. A falling curve indicates clearing weather for the next day while a rising curve is followed by cloudy weather or rain.