I saw a documentary about the rain of frogs and fish in certain areas due to water sprouts sucking them up and causing rain of frogs and fish (pretty large ones) hundreds of miles away. But how is it possible that frogs and fish can be transported such large distances without them falling immediately even in calm weathers?
closed as unclear what you're asking by ZeroTheHero, Kyle Kanos, John Rennie, Jon Custer, user191954 Oct 25 '18 at 8:15
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Raining animals is a rare meteorological phenomenon in which flightless animals fall from the sky. Such occurrences have been reported in many countries throughout history. One hypothesis is that tornadic waterspouts sometimes pick up creatures such as fish or frogs, and carry them for up to several miles. However, this aspect of the phenomenon has never been witnessed by scientists.
A current scientific hypothesis involves tornadic waterspouts: a tornado that forms over the water. Under this hypothesis, a tornadic waterspout transports animals to relatively high altitudes, carrying them over large distances. This hypothesis appears supported by the type of animals in these rains: small and light, usually aquatic, and by the suggestion that the rain of animals is often preceded by a storm. However, the theory does not account for how all the animals involved in each individual incident would be from only one species, and not a group of similarly-sized animals from a single area.
It would be a turbulance siphoning water up, watch this video at 0.45 seconds for the power involved. The turbulance does not end at the level of the clouds, just angular momentum conservations would ensure that, so small animals could be carried up with the water and follow the turbulance within the cloud, until it slowly dissipates and they cannot stay up any longer due to their unsupported weight.
Here is a video of fallen live fish, at 1.07 min.
The objection of the wiki quote "the theory does not account for how all the animals involved in each individual incident would be from only one species" is not really serious, imo, as fish notoriously swim in schools , it is finding them isolated that is unusual.
Of course since there is no recorded with measurements at input and recorded in the cloud such occurrence, everything is a hypothesis.