This view inside Hurricane Irene reveals a small area of heavy rain concentrated in a towering cloud, a sign that the storm is probably strengthening.
Published Aug 22, 2011
TRMM reveals that although Bill did not yet have an eye or eyewall, it did have a well-developed cyclonic circulation as evidenced by the curvature in the rain bands that spiral in towards the center.
Published Aug 17, 2009
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