This image was taken in LaCrosse during the emergence.
Radar & Image Source: National Weather Service
Is it possible that other swarms have or can be tracked by weather radar?
But indeed radar reflects varyingly depending upon the wavelength it sends out (NWS is about 10 cm) and the properties of the item it hits, so there are all kinds of current/potential applications for radars, from geology to medical applications to tracking space junk.