Cloud classification symbol CL9. Cumulonimbus, the upper part of which is clearly fibrous (cirriform) often in the form of an anvil; either accompanied or not by cumulonimbus without anvil or fibrous upper part, by cumulus, stratocumulus, stratus or 'scud' (Cumulonimbus cappillatus or incus).
svg version by <a href="//commons.wikimedia.org/wiki/User:Actam" title="User:Actam">Actam</a>
2008-04-18
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:CL_9.png" title="File:CL 9.png">CL 9.png</a><br> (<a rel="nofollow" class="external free" href="http://www.srh.noaa.gov/srh/jetstream/synoptic/sfc_plot_symbols.htm">http://www.srh.noaa.gov/srh/jetstream/synoptic/sfc_plot_symbols.htm</a> see linked subpages by NOAA)