Hurricane Ophelia
GOES-13 Visible (0.63 µm, left) and Infrared Window (10.7 µm, right) images, with hourly surface reports (in metric units) plotted in yellow [click to animate]
#Ophelia has shattered the record for northeastern-most forming Cat 3 in the Atlantic and is the easternmost overall. League of its own. pic.twitter.com/sZrHap5z1f
— Brenden Moses (@Cyclonebiskit) October 14, 2017
A DMSP-17 SSMIS Microwave (85 GHz) image (below) also revealed a circular eye structure.
One factor that might have aided this increase of intensity was the recent passage of Ophelia through an environment of higher Maximum Potential Intensity (reference), where maximum wind speed values of 100 knots resided (below).