http://weather.msfc.nasa.gov/GOES/goeseastconus.html
use this link and do full zoom about 10 images or so and then click ese of brownsville you cant miss it its big and round

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wxman57 wrote:It is just an outflow boundary. Happens all the time. As a thunderstorm collapses, the air rushes out in all directions forming a ring of new convection and leaving a hole free of clouds.
Aric Dunn wrote:wxman57 wrote:It is just an outflow boundary. Happens all the time. As a thunderstorm collapses, the air rushes out in all directions forming a ring of new convection and leaving a hole free of clouds.
i have seen outflow boundries my whole life but not quite like that .. its a little stranger
you notice in the loop that that everything seems to be going around it ..and why is it moving at a right angle to most of the low level flow