000
AGXX40 KNHC 101707
MIMATS

MARINE WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
105 PM EDT THU JUL 10 2008

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

THE LATEST VISIBLE SATELLITE IMAGERY OF HURRICANE BERTHA 
INDICATES A BANDING EYE APPEARANCE WITH THE EYE BECOMING MORE 
RAGGED SINCE DAYBREAK. THE STRONGEST BAND IS WRAPPING AROUND THE 
SW QUADRANT. THE HURRICANE IS BEING STEERED BY A FAIRLY WELL 
DEFINED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION CENTERED NEAR 
28N69W AND A MIDDLE LEVEL ANTICYCLONE IN THE VICINITY OF 37N59W. 
THE LATEST GFDL VERSION OF THE NOAA WAVEWATCH 3 MODEL INDICATES 
THE HIGHEST SEAS ARE ABOUT 38 FEET. THE GLOBAL WAVEWATCH 3 IS 
UNDERESTIMATING THE HIGHEST SEAS WITH THE 12Z RUN ONLY 
PREDICTING 12 FOOT SEAS THIS AFTERNOON AND BUILDING TO ONLY 15 
FEET IN 48 HOURS. A QUIKSCAT PASS AT ABOUT 1030 UTC INDICATES A 
CLEARLY DEFINED RIDGE AXIS EXTENDING THROUGH BERMUDA TO THE N 
CENTRAL FLORIDA PENINSULA. A TROPICAL WAVE ENTERING THE E 
CARIBBEAN IS PRODUCING STRONG TSTMS S OF 13N E OF 65W. OVER THE 
SW CARIBBEAN E WINDS ARE EXPECTED TO INCREASE TO 20 TO 25 
KT...AND AS HIGH AS 30 KT OFF THE COLOMBIA COAST...IN 24 TO 36 
HOURS.

WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

.FORECASTER CAB. TROPICAL PREDICTION CENTER.