Billowing cumulus and cumulonimbus clouds suggest that a cold, windy front was moving across the desert, perhaps a haboob.
mashable.com Special attention is paid to low clouds and convective cloud particularly cumulonimbus incus clouds.
en.wikipedia.org As the cumulonimbus cloud in a thunderstorm grows vertically, the liquid water droplets freeze when the air temperature reaches the freezing point.
en.wikipedia.org It is therefore one of three warning clouds often recorded by the aviation industry, the other two being towering cumulus and cumulonimbus.
en.wikipedia.org Cumulonimbus clouds, commonly called thunderheads, can produce high winds, torrential rain, lightning, gust fronts, waterspouts, funnel clouds, and tornadoes.
en.wikipedia.org