NY Outdoors

Tuesday, December 20, 2011


Check out this phenomenon in Birmingham, AL today! This phenomenon is called Kelvin-Helmholtz clouds. A brief description from the Cloud Appreciation Society: "The breaking waveforms of Kelvin-Helmholtz clouds are the result of shearing winds up at cloud level. A particular type of turbulence can develop in a layer of cirrus cloud, which happens to form below an inversion ...between air currents of differing speeds and/or directions. Sea waves break as their bases are slowed down upon reaching shallow water and their crests surge ahead. Cloud waves break in the same way: when their crests are pushed ahead of their troughs by the difference in air currents

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