This area is affected by destructive forces because the sand on top of the dunes is being blown around. this means that the dunes will be deconstructed and there will be more dunes somewhere else for this reason. (now just beef this up a bit and you’ll be okay hopefully sorry if i’m wrong)
By referring to them as "his mother and his father" the reader can feel more close to the character. When saying "the mother and the father" one can relate less, feel distance between one and those parents. On the other hand, when saying "his mother and his father" the reader feels a little more close to the situation, feels deeper the relationship and can ever reflect him or herself in the character.
Therefore it makes sense that some kibs are vics.
It is a tropical storm I am pretty sure.