Mammatus clouds
The name "mammatus" is derived from the Latin mamma (breast), due to the shape of these clouds. These clouds can be formed in different ways but there is always one common factor: for them to develop there must be both warm, humid air and dry air at the same time. For this reason, these clouds are common in mountainous areas.
Mammatus clouds in Tulsa , Oklahoma 1973
Mammatus clouds in Minnesota in 2005
Morning Glory
The Morning Glory cloud is a rare meteorological phenomenon observed in Nothern Australia's Gulf of Carpentaria. A Morning Glory cloud is a roll cloud that can be up to 1000 kilometers long, 1 to 2 kilometers high, and can move at speeds up to 60 kilometers per hour.
Find more info here
Lenticular Clouds
Resembling piles of plates suspended in the sky, lenticular clouds are another strange cloud phenomenon. To form they need a combination of a hilly landscape, wind and multiple layers of stable, humid air, which id why they are common in high-altitude areas.
Find more info here
Cumulonimbus Clouds [Anvil Head]
This cloud formation is likely to bring torrential rain, violent winds and even tornados. It is a result of atmospheric instability. They create lightning throught the heart of the cloud.
The name "mammatus" is derived from the Latin mamma (breast), due to the shape of these clouds. These clouds can be formed in different ways but there is always one common factor: for them to develop there must be both warm, humid air and dry air at the same time. For this reason, these clouds are common in mountainous areas.
Mammatus clouds in Tulsa , Oklahoma 1973
Mammatus clouds in Minnesota in 2005
Morning Glory
The Morning Glory cloud is a rare meteorological phenomenon observed in Nothern Australia's Gulf of Carpentaria. A Morning Glory cloud is a roll cloud that can be up to 1000 kilometers long, 1 to 2 kilometers high, and can move at speeds up to 60 kilometers per hour.
Find more info here
Lenticular Clouds
Resembling piles of plates suspended in the sky, lenticular clouds are another strange cloud phenomenon. To form they need a combination of a hilly landscape, wind and multiple layers of stable, humid air, which id why they are common in high-altitude areas.
Find more info here
Cumulonimbus Clouds [Anvil Head]
This cloud formation is likely to bring torrential rain, violent winds and even tornados. It is a result of atmospheric instability. They create lightning throught the heart of the cloud.
at least the 'mamma' 
