I’d estimate that 46 quadrillion snowflakes fell on Boston in the weekend’s storm.
Thirty-five years ago WGBH ran a contest to estimate how many snowflakes had fallen on Boston during the Blizzard of ’78. My father, Jack Tessman, a Tufts physics professor, won with his calculation of 50 quadrillion snowflakes.
As he commented at the time, it’s lucky no two snowflakes are identical, as that would have made them much harder to count.