According to Fox News , the largest reported snowflake was 15 inches wide and 8 inches thick. This remarkable snowflake was reported by Guinness World Records as having fallen during a snowstorm in Fort Keogh, Montana in 1887.
The claim, attributed to a ranch owner named Matt Coleman, describes snowflakes "larger than milk pans." While such large snowflakes are incredibly rare, they can form under specific conditions where many smaller crystals aggregate.
The record has been subject to debate among meteorologists, but it remains the largest officially reported snowflake, showcasing the extraordinary variety of winter weather phenomena.