A green downburst, due to a bit of moisture and some cloud bands from Tropical Storm Nicholas making their way onto Mexico
<a href="//commons.wikimedia.org/wiki/User:Couch-scratching-cats" class="mw-redirect" title="User:Couch-scratching-cats">Couch-scratching-cats</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>