Snowstorm End Flake Size
Is it true that at the end of a snow storm the snowflakes
The formation of snow flakes -- their size and weight -- is very
complicated and not fully understood. I do not think that a generalization
is possible. The following lecture notes probably explains more than you
care to know about snow flakes, but it certainly is comprehensive!!
Snowflake size is not related to what time it falls during a snow event.
Snowflake formation is a complex process, involving many variables such as
moisture, temperature, and winds. What most people refer to a "big"
snowflake is usually a conglomeration of many smaller flakes that have stuck
together as they fell. When conditions are favorable, these "flakes" can be
larger than 2 inches in diameter. Sometimes these conditions occur at the
beginning of a snow event, but rarely at the end.
Wendell Bechtold, meteorologist
Forecaster, National Weather Service
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Update: June 2012