Clouds

I was going through some photos this morning to find something to post about, and found these pix of a cloud formation in Manitoba sometime in July.  I recall I was going to send them to TheWeatherNetwork to identify (haven't sent yet) beyond cumulous or cumulonimbus.  The clouds were to the east of me mid-afternoon and I don't know if the clouds were forming or had already dumped their load of rain.   Pretty fantastic formation.