Whale's mouth cloud: A massive, dark cloud that literally looks like a whale’s open mouth. These clouds arrive after the passing of shelf clouds, which show the boundary between a downdraft and ...

After the initial laminar shelf cloud passes overhead, the turbulent skies lurking behind can have a very dark and ribbed appearance, akin to the inside of whale’s mouth. These clouds accompany ...

According to The Weather Channel, the "whale's mouth" is a saying for the "turbulent churning flow immediately behind a line of thunderstorm's shelf cloud." KYTX-TV Tyler-Longview Posted: April 4 ...

The "whale's mouth" appeared over the New York City skyline Tuesday, May 15, 2018. Big Apple residents took to social media to share their photos of these dark, turbulent clouds, known ...