Editing Nimbostratus cloud (section)

==Appearance==
Nimbostratus has a diffuse [[cloud base]] generally found anywhere from near surface in the low levels to about {{cvt|2000|to|4000|m|ft}}.in the middle level of the troposphere. Although usually dark at its base, it often appears illuminated from within to a surface observer.<ref name="Nimbostratus">{{cite book |editor=World Meteorological Organization |title=Nimbostratus, International Cloud Atlas |volume=I |year=1975 |url=https://archive.org/details/manualonobservat00worl/page/37 |pages=[https://archive.org/details/manualonobservat00worl/page/37 37–39] |isbn=92-63-10407-7 |access-date=26 August 2014 |url-access=registration }}</ref>  Though found worldwide, nimbostratus occurs more commonly in the middle latitudes.<ref name="cloudspotterguide" />  It is coded C<sub>M</sub>2 on the [[SYNOP]] report.