Question

If Umbrella alives????
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Answer 1

Non rain world will be there

Answer 2

A strong wind will tear a Mary Poppins-sized umbrella apart (or it gets blown out of your hand). Now assume that strong wind stands still and you move as fast as the wind with your umbrella - vertically. Without calculating anything my assumption is, that the umbrella cannot produce enough lift to keep up a human. Maybe it will slow you down for a fraction of your speed, but before it is significant enough, the umbrella breaks.