The latest National Hurricane Center forecast discussion, from forecaster Eric Blake, is blunt:
BASED ON WHAT WE THINK WE KNOW ABOUT INTENSITY CHANGE...THERE DO NOT SEEM TO BE TOO MANY INHIBITING FACTORS TO A FUTURE INTENSIFICATION OF DEAN. GLOBAL MODELS UNANIMOUSLY DEVELOP A LARGE UPPER-LEVEL ANTICYCLONE NEAR THE CENTER OF THE HURRICANE AS THE SYSTEM TRAVELS INTO THE CARIBBEAN SEA. IN COMBINATION WITH VERY DEEP WARM WATERS...THIS PATTERN WOULD FAVOR THE DEVELOPMENT OF A POWERFUL HURRICANE.
Here is the latest track for Dean, which is supposed to be a hurricane within 24 hours:
