Questions tagged [rainfall]
The rainfall tag has no usage guidance.
8
questions
97
votes
6answers
20k views
How can a storm drop 40 inches (1 metre) of rain?
Hurricane Harvey dumped more that 20 inches (500 mm) of rain over a large region, with 40+ (>1000 mm) in some spots... and much more expected.
How is that possible?
Does the atmosphere really hold ...
30
votes
2answers
51k views
At what humidity does it start to rain?
As far as I understand it is perfectly valid for air to have 100% humidity. At that point, all water can still exist in form of vapor, non-condensed.
Does it immediately start to rain if humidity is >...
9
votes
2answers
2k views
Why do rivers sometimes travel down the opposite side of the mountains from where the rain happens?
My teacher explained that when wind coming from the ocean gets blocked by a mountain it makes rain on one side of the mountain, like in the image below. This rain leads to the creation of rivers.
(...
7
votes
3answers
536 views
Algorithmically Determining the Rainy Season
I have historical precipitation data for hundreds of cities around the world. I would like to algorithmically determine when the rainy season (if exists) is for each location. Are there any algorithms ...
3
votes
2answers
113 views
Why do clouds have areas of darkness instead of scattering light to produce a rainbow?
I suspect it has to do with the difference in size of a rain drop and that of the water particles in the cloud.
2
votes
3answers
16k views
How does elevation affect the amount of rainfall received?
How does elevation affect the amount of rainfall received? Does elevation affect precipitation?
0
votes
1answer
84 views
Humidity and Rainfall
Usually the higher the humidity the more rainfall we get like in the summer here in Asheville, North Carolina we get a lot of showers and thunderstorms in the summer from the high humidity but I saw ...
0
votes
2answers
92 views
Deserts and Humidity
How is that a general rule of thumb that less humidity equals more rain? Deserts don’t get much rain and humidity is also very low. Rainforests get a lot of rain when the humidity is very high so how ...
