4. lake effect snows are most frequent and intense in late winter.

a true
b false

B False

Explanation:

The so-called "terrestrial blizzards" occur in the Great Lakes region. This region covers from Wisconsin to New York and from the upper midwest to southern Ontario in Canada. Every year there is snowfall with a lake effect in the areas that border the Great Lakes. Major cities like Cleveland and Buffalo experience it. Through the understanding of atmospheric pressure.

Many of the heaviest snowfall in the United States have been the product of lake-effect snow.

Lake-effect snow usually occurs from November to February. The snow is more intense in late autumn and early winter because the temperature gradient between the lake and the cold air is maximum in this period of time. The temperature difference between the lake and the level of 850 millibars is usually greater than 13 ° C for a significant snowfall due to the lake effect. Lake effect snow may occur until the lake freezes. After this point, the temperature gradient is small and low humidity can evaporate.

river is shown in this type of map