Posting the marine discussion from Miami tonight, bolding the important parts.

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
250 PM EDT TUE OCT 23 2012

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA
AND TROPICAL N ATLC...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.
...

SW N ATLC S OF 31N W OF 65W...
SHEARLINE MENTIONED ABOVE COMBINING WITH HIGH PRES TO THE NNW TO
PRODUCE A BROAD ZONE OF 20-25 KT WINDS AND SEAS TO 8 FT NE OF
THE N HALF OF BAHAMAS AND THROUGH THE STRAITS OF FLORIDA...WHILE
FRESHENING EASTERLIES TO THE S WILL CONTINUE TO INCREASE AS
SANDY DEEPENS NEXT 24-36 HOURS. SANDY OF MAIN FOCUS OF FORECAST.
HIGH PRES WILL REMAIN N AND NW OF SANDY AS IT EXITS CARIBBEAN
NEXT 48 HOURS AND COMBINE WITH MONSOONAL ORIGINS TO PRODUCE VERY
LARGE WIND FIELD SHIFTING NNE WITH SANDY. CURRENT NELY FETCH N
OF SHEAR LINE ALREADY YIELDING 6-8 FT SEAS NE OF BAHAMAS AND 5-6
FT ALONG THE FLORIDA COASTS. VERY DANGEROUS SCENARIO IS
DEVELOPING WITH SANDY AS SUFFICIENTLY SLOW MOVEMENT...PRE
EXISTING HIGH SEAS...VERY LARGE WIND FIELD...AND ONSHORE FLOW
DURING HIGH LUNAR TIDES COULD SPELL EXTREME COASTAL FLOODING AND
EROSION FOR FLORIDA AND CERTAINLY BAHAMAS WED NIGHT THROUGH SAT.
WW3 FORECASTING 12 FT SEAS TO REACH CENTRAL FLORIDA COAST BY 18Z
THU WITH SEAS BUILDING 20-35 FT WITHIN THE COASTAL WATERS BY 18Z
FRI. THIS COULD EVOLVE INTO A HISTORICAL EVENT AND FO'S ARE
ENCOURAGED TO ADVERTISE THIS EVENT VERY HARD. NELY SWELL WILL
CONTINUE TO IMPACT FLORIDA AND SE COASTS THROUGH THE WEEKEND
WITH LONGER PERIOD SWELL INDUCING SUSTAINED RUNUP.