Look the dragonflies are flying

It is going to rain heavily today. Mostly by evening! Not based on any information from the weatherman. But looking at the dragonflies. These dragonflies, the red ones, in particular are flying in large groups, about 50 meters from the ground level. The farmers and shepherds in the Rayalaseema region of Andhra Pradesh consider this as an important indicator to predict the arrival of rains. I have checked the validity of this local knowledge. It really works.
It is time that Local Knowledge Systems are integrated with modern early warning system.