Editing Lake-effect snow (section)

=== Fetch ===
The distance that an air mass travels over a body of water is called fetch. Because most lakes are irregular in shape, different angular degrees of travel yield different distances; typically, a fetch of at least {{convert|100|km|mi|-1|abbr=on}} is required to produce lake-effect precipitation. Generally, the larger the fetch, the more precipitation produced. Larger fetches provide the boundary layer with more time to become saturated with water vapor and for heat energy to move from the water to the air. As the air mass reaches the other side of the lake, the engine of rising and cooling water vapor pans itself out in the form of condensation and falls as snow, usually within {{convert|40|km|mi|abbr=on}} of the lake, but sometimes up to about {{cvt|100|mi|km|order=flip|round=50}}.<ref>{{cite web |url=http://www.comet.ucar.edu/class/smfaculty/byrd/sld012.htm |title=Lake Effect Snow: Fetch |first=Greg |last=Byrd |date=June 3, 1998 |website=University Corporation for Atmospheric Research |url-status=dead|archive-url=https://web.archive.org/web/20080515101954/http://www.comet.ucar.edu/class/smfaculty/byrd/sld012.htm|archive-date=2008-05-15}}</ref>