In meteorology, training denotes repeated areas of rain, typically associated with thunderstorms, that move over the same region in a relatively short period.
Training thunderstorms are capable of producing excessive rainfall totals, often causing flash flooding.
The exact process repeats in the new storms until overall conditions in the surrounding atmosphere become too stable to support thunderstorm activity.
A series of storms continually moving over the same area, dumping heavy rains, can cause flash flooding.
This type of training can quickly cause flash flooding, especially if the thunderstorms are strong.