How long does it take for one inch of rain to fall?

Answer 1

The amount of time it will take for one inch of rain to fall will vary. One inch of rain can fall in as little as 15 minutes in heavy downpour. It could also take up to several hours. It is mainly based upon the intensity of rainfall.

Answer 2

A gallon is 231 cubic inches.

That's 6.1358*6.1358*6.1358 inches

At 1 inch thick, a gallon of water will cover:

15.19868415357066363166874420604 square inches, or

1.26655701279755530263906201717 square feet

To answer your question, one would need to know the square foot area to which you are referring. A 2000 sq foot roof would collect 1579 gallons of rain if 1 inch fell, for instance.

Answer 3

This is impossible to answer without more information. An inch and a half in what space? In a square meter? Over the earth?

Answer 4

A standard weather service rain gauge is 8" in diameter. In a standard rain gauge, 1" of water would be about 28 ounces.

Answer 5

The volume (and mass) would depend on the cross-section. The rain gauge need not have any specific diameter or cross-section.

Answer 6

1in³ = 0.55411us fl oz