Cloud classification symbol CL 1
SVG version by <a href="//commons.wikimedia.org/wiki/User:Actam" title="User:Actam">Actam</a>, original by US National Weather Service
2008-04-18
<span class="int-own-work" lang="en">Own work</span> (from <a rel="nofollow" class="external free" href="https://web.archive.org/web/20041228011642/http://www.srh.noaa.gov:80/srh/jetstream/synoptic/l1.htm">https://web.archive.org/web/20041228011642/http://www.srh.noaa.gov:80/srh/jetstream/synoptic/l1.htm</a>)