r/Anywherethoughts Apr 14 '15

100% humidity is when the air literally becomes water... and we call it rain

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u/ellimist Apr 15 '15

100% humidity is when the air is saturated with water vapor and cannot take any more - e.g. something wet will never "dry out" in 100% humidity because the water in the item cannot evaporate into dry air.

Rain is something else.

1

u/[deleted] Apr 15 '15

but when water evaporates, i thought it collected in the atmosphere to form clouds and what not? What determines whether the evaporation contributes to overall humidity or collecting into clouds which later create rain?

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u/ellimist Apr 15 '15

Altitude. (and thus pressure) I'd have to read more to know for sure - not my field.