Rare Wave-Like Clouds Spotted In Erie

ERIE, Pa. (KDKA) – While clouds are nothing new to Western Pennsylvania, we don’t usually see amazing clouds like this.
These super rare wave-shaped clouds were photographed yesterday in Erie.
Photo Credit: Jamie Morath Heynes
KDKA meteorologist Ray Petelin weighed in on what caused the clouds to form.
“Those are Kelvin-Helmholtz clouds. A very rare cloud pattern that is caused by velocity shear,” he said.
Photo Credit: Jamie Morath Heynes
“Velocity shear occurs whe