Most have got the answer correct...have made an effort to refer to the "search" and got the link...yes...Pyrocumulus clouds....but in effect, they are not classified as clouds by meteorologists...the links for full details and another link showing pyro cumulus clouds from space.
Posted Thursday Morning:
BB-6 has moved NW and weakens over Rajasthan/ NW MP region.
ANother UAC is forming over the Sindh/Kutch border region on Thursday. It is expected to move West towards Coastal Sindh as a weak current/system.
A UAC may form over North Bay on Friday and it seems from current indications the system can possibly move N/NW into Gangetic West Bengal.
Mumbai is having sunshine today with rains decreased as expected. Thursday morning saw 42 mms rainfall in the last 24 hrs at Scruz....
Rains expected in Chennai today and next 24 hrs...
More later tonite