“this tempest will not give me leave to ponder”
The storm raging outside while Lear references his own internal ‘tempest’ is representative in its self of the chaos and intrusive burden of his own madness on his decision making possibilities. As someone says “this storm will turn us all to fools and madmen” and it is likely Shakepeare intended this statement to apply to both the external and internal tempest that is affecting.
The external storm is nothing compared to the internal.
Dara, this is very brief and while I think you have understood the essence of this metaphor, I would like to see you explain your understanding in further depth and with closer reference to the play.