Roger's SkyPix

Gallery of Outflow

Whale's Mouth

Whale's Mouth

Once in a thunderstorm's cold outflow, but not yet embedded in deep precipitation, observers often witness the upward-sloping maw of the shelf cloud's underside. This shape is known colloquially as a "whale's mouth", sometimes accompanied by a resemblance of the rain core to baleen.

4 NE Matador TX (19 Apr 9) Looking NE