I took this cloud pciture after stepping out of a shop this afternoon. It was just too cool to not put on the blog.
"Known as mammatus clouds, these strange,
pouchy formations often occur in association with a thunderstorm. They
have been seen in lots of places, including the midwestern United
“They are some seriously weird looking clouds,” said cloud physicist Patrick Chuang.
But scientists do have some theories about mammutus clouds. Another
cloud physicist, Daniel Breed of the National Center for Atmospheric
Research, says buoyancy and convection of air is the key.
“They’re kind of like upside-down convection,” Breed said.
Convection is like a buoyant bubble, he said. In mammutus clouds,
evaporation causes pockets of negative buoyancy as it cools the air
inside the cloud. This makes the clouds puff downward instead of up like
cumulus clouds, and they end up being like upside-down bubbles." (source:wired)
Keep Right On Prepping- K