As nouns the difference between microburst and rainstorm
is that microburst is (meteorology) a strong downdraft, of less than 25 miles in diameter, that can cause damaging winds while rainstorm is a storm characterized by substantial, heavy rainfall.
microburst
English
Noun
(
en noun)
(meteorology) A strong downdraft, of less than 2.5 miles in diameter, that can cause damaging winds.
See also
* macroburst
rainstorm
English
Noun
(
en noun)
A storm characterized by substantial, heavy rainfall.
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See also
* thunderstorm
* deluge
* snowstorm
* hailstorm