a sudden and overwhelming amount of something
1. The company received an avalanche of orders after their product was featured on a popular television show. 2. The town was buried under an avalanche of snow after a heavy winter storm.
1. "I was just thrust into this little spotlight of an avalanche of highlighted attention." Taylor Swift, Rolling Stone 2. "I was suddenly hit by an avalanche of highlighted press attention." Meghan Markle, ITV Documentary