Pub Quiz question, don't believe the answer. How much water is there in a square mile of fog.?

Question

I'll take it that the fog in question is your normal run of the mill stuff and not a pea-souper

So sorry typo, it should read a cubic mile of fog. Apols again as the actual fog type were not detailed.

Answer 1

From some limited research and a little mathematics I have come up with the figure 250,000 Kg. (or 551,000 pounds)

I worked this out as follows:

Amount of water in 1 cubic metre of fog = 0.06 g (approx)
There are 1609 metres in a mile so there are 4165509529 cubic metres in 1 cubic mile. ( I have assumed that you meant a cubic mile rather than a square mile)

You multiply this figure by 0.06 to determine the weight in grammes then divide by 1000 to convert to Kg.

Answer 2

Surely the question should relate to a cubic measurement, and not a squared one, as a square mile of fog is a meaningless idea when considering how much water it contains. And, as a previous answerer pointed out, it all depends on the density of the fog. There's no such thing as a standard foggyness....

Answer 3

It depends - fog forms when the air is 100% saturated, and when the temperature of the air is higher it can hold more water and therefore requires more water to become saturated and form Fog.

Answer 4

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Answer 5

The average fog ranges from 0.03 to 2.3 grams of water per square metre.Using this I have worked it out to be between 122,880KG to 9,420,800KG per square mile of fog

That's a hell of a lot of water!!!!!

Answer 6

1.4 billion pounds of water per square mile of fog.
A cloud one mile on a side is 5,280 x 5,280 square feet. That comes to 1.4 billion pounds of water per square mile of cloud! A cubic foot is about 7.5 gallons, so a cubic foot of water weighs about 8.3 x 7.5 = 62 pounds. And so a storm cloud that drops one inch of rain holds about 62 / 12 = 5+ pounds of water per square foot. A cloud one mile on a side is 5,280 x 5,280 square feet. That comes to 1.4 billion pounds of water per square mile of cloud! An inch of rain weighs 5+ pounds per square foot, but that water is spread out as tiny droplets in the cloud it falls from. If the cloud is 1000 feet thick, that water is dispersed over 1000 vertical cubic feet, only 0.08 grams per liter. The air holding those droplets weighs 1.2 grams per liter, many times more. Water droplets are subject to gravity, but they are so tiny that air currents have a greater effect in keeping them aloft, like dust motes. If they coalesce into larger drops, they fall as rain. And sometimes clouds do fall, and become... fog!

Answer 7

I'm thinking similar to the snow answer, 3 or 4 %

Answer 8

insufficient information, fog density is required. (example: a light dry snowfall is only 5% water)

Answer 9

1 litre? 2? 3?

I seriously dont have a clue.

Answer 10

who the heck cares. you people need to have some fun in your life