Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Generating Snow
Name: Cierra
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: N/A 

What time of day do tornadoes usually occur in?


The process for making snow is fairly simple. Condensation nuclei (soil, salt, etc.) act as sites for water vapor to freeze onto, expanding as snow crystals with time. The air that snow crystals form in must be near or above saturation (relative humidity near 100%) and below freezing.

The same process is used by man-made snow machines at ski resorts.

The howstuffworks website at

gives a good description of how snow is made by nature and also how man-made snow is made.

You can also use a web browser search engine such as Google (type in "snow maker") to find web pages that tell you how to make your own home-made snow maker.

David R. Cook
Climate Research Section
Environmental Science Division
Argonne National Laboratory

Click here to return to the Weather Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory