Illustrations of the logo are initials "WW" which represent the amplitude of weather changes. The color spectrum displays the range of weather as the weather radar map.
Above the "WW" amplitude added to the signs that are word weather. The meaning of the signs follows the colors in amplitude.
Under the amplitude added dimension of time, which is part of the forecasts.
Signs are in a discreet gray to focus on the center of the logo, the amplitude changes of weather that the link between the signs words of weather and time.