A meteor storm can be seen from Brazil in late May

According to an article published by the Brazilian Meteorite Monitoring Network (Pramon), a meteor storm is an unusual meteor shower, which has an outburst of such intensity that it is capable of producing thousands of meteors per hour.

Recent studies show that meteor storms are usually caused by dense clouds of particles ejected through a comet or the fragmentation of an asteroid. Over time, this cloud spreads out into the orbit of the parent body forming annual meteor showers. Therefore, the more recently a comet or asteroid fragmentation occurred, the denser the cloud, and the greater the intensity of the resulting meteor storm.