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Swirl within a swirl: Striking cyclone stands out south of Greenland

South of the tip of Greenland, satellite imagery reveals a dynamic duo of comma-shaped swirls.

It’s pretty to look at, but not particularly ominous.  This storm has occluded, and the temperature contrast that drove its initial development is breaking down.  In other words, it has entered its weakening phase.  The inner swirl is detaching from the broader circulation.

Here’s a wide view of the storm, from NASA’s full-disc view:


(NASA)

Now here are two more detailed images, progressively zoomed in, from NASA’s World View Site:


(NASA)

 


(NASA)

The storm’s minimum central pressure  of 985 millibars, as analyzed by the National Weather Service, is nothing to sneeze at, but pretty common for an ocean storm.  Exceptional storms have minimum central pressures in the 960 millibars or lower range.


(National Weather Service National Ocean Prediction Center)

While a somewhat pedestrian storm, its satellite signature and juxtaposition with Greenland are eye-catching and I figured worth sharing.

Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.
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