[cschroe]

Lowest recorded pressure in the US was something like 857, in a hurricane that passed over the kesy in the 30's, I think.

[steveegg]

Jeff Head dug up a list of the most-intense tropical storms (link). The Labor Day Hurricane hit at 892 mb, Gilbert was measured at 888 mb, and Typhoon Tip over in the Pacific holds the measured record at 870 mb.

[Tarpon]

The Keys hurricane of 1935 did have the lowest barometric pressure of any recorded over land in the US, it was 26.35 inches or 892 millibars. Here is a link

At 902, we are getting in range -- but I doubt it this time. The keys are mostly over water. Metacumbe Key is only few miles wide.