Long range radar from San Juan. Looks like a double eyewall? I cant remember ever seeing this. Of course, I have never seen 185mph+ hurricane on radar either. It looks perfect!
Double eyewalls are usually a sign of an Eyewall Replacement Cycle underway (or at least an attempt). Typically during an ERC, top winds speeds come down, but the radius of powerful winds expands. With a double eyewall there will tend to also be two distinct wind maxima. (An image of this as it looks via recon is currently up on the Main Page Thread ).
Often once completed, top wind speeds will consolidate and increase again.
This is a fairly common phenomenon, not at all reserved for only the strongest systems, but is always a site to behold.
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