From Steve Gregory's wunderground blog:

"Another RECON report shows the pressure is up 2mb, but there are times that the dropsonbde 'misses' the dead center of the storm.
But in any case, pressure seems to have stabilized, and the last few stepped IR images seem to be showing a weakning to the convection on the sSSW side of the 10NM wide eyewall, and we may be starting an eyewall replacement cycle.
The temp difference is between the inside and outside of the eye is as high as I've ever seen, 16degC. This implies an extyremely tight, very healthy circulation. So the weakening of convection on the south side of the eye wall almost certainly is the first signs of an eye wall cycle replacement.

With very warm, high heat content water ahead, and no change seen to impact the outflow a top the hurricane -- Emily will probably resume some further intensification, reaching CAT 5 status during the next 18 hrs.

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JULY 16 - 7:55PM CDT

Hurricane Emily has now broken the all-time record for strongest storm so early in the season, with a central pressure of 929mb."