snowflake Definition and 1 Threads

Snowflakes are water crystals that grow while falling. Is there a limit of how large can a snowflake be? Aggregate snowflakes can be tens of cm big :https://news.ncsu.edu/2018/12/how-big-can-snowflakes-be/ The 2003 World Guinness of the largest single snowflake is about 1 cm big...