Why do thunder heads grow later in the day?



  1. emc
    0 Votes

    When the sun rises in the morning it starts to heat the ground, causing the cool air just above the ground to heat as well.  By afternoon, the sun has had hours to heat the ground significantly.  Warm air rises, and cool air sinks.  Warm air pockets rise high into the atmosphere creating instability as they displace and force cool air pockets downward.  This instability (caused by heating the ground throughout the day), combined with moisture, is key to creating a thunderstorm.

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