Re: Drizzle

Rain and Drizzle are actually formed in the same way, i.e. a cloud becoming
saturated and the "excess" falling in the form of rain or drizzle. The
difference between rain and drizzle is simply the size of the drop. The
size of the drop depends upon the depth of the cloud that it falls out of. 
The deeper the cloud, the bigger the drop. Think of it like this: Drops 
all start out the same size(very tiny), but the longer it takes for the 
drops to fall out of the cloud, the more time they have to run into each
other and combine to bigger drops. Example: A thunderstorm can be 10's of 
thousands of feet deep, and big large drops fall from them. However, the 
low clouds and fog that form under the right conditions can be only a few 
hundred feet deep! These clouds produce drizzle drops that are so tiny that 
you can't easily see them, but can feel them on your face.

If you're curious for more information, check out your New York National
Weather Service office's home page and their many links to weather 
education information! http://www.nws.bnl.gov/