Editing Cumulus cloud (section)

== Forecast ==
[[Cumulus humilis]] clouds usually indicate fair weather.<ref name="TWC">{{cite web|url=http://www.weather.com/glossary/c.html |title=Weather Glossary |publisher=[[The Weather Channel]] |access-date=18 October 2012 |url-status=dead |archive-url=https://web.archive.org/web/20121017165021/http://www.weather.com/glossary/c.html |archive-date=17 October 2012 }}</ref> Cumulus mediocris clouds are similar, except that they have some vertical development, which implies that they can grow into [[cumulus congestus]] or even [[cumulonimbus cloud]]s, which can produce heavy rain, lightning, severe winds, hail, and even [[tornado]]es.<ref name="USA Today" /><ref name="TWC" /><ref name="WeatherThompson">{{cite book|last=Thompson|first=Philip|author2=Robert O'Brien|title=Weather|url=https://archive.org/details/weather00thom|url-access=registration|publisher=Time Inc.|location=New York|year=1965|pages=[https://archive.org/details/weather00thom/page/86 86–87]}}</ref> [[Cumulus congestus]] clouds, which appear as towers, will often grow into [[cumulonimbus]] storm clouds. They can produce precipitation.<ref name="TWC" /> [[Glider aircraft|Glider]] pilots often pay close attention to cumulus clouds, as they can be indicators of rising air drafts or [[thermal]]s underneath that can suck the plane high into the sky&mdash;a phenomenon known as [[cloud suck]].<ref name="Pagen-105-108">{{harvnb|Pagen|2001|pp=105&ndash;108}}</ref>