Most recent from NEMO here:

To All:

The Government of Belize has put the country on Red 2 as of this morning and the San Pedro Emergency Committee and the Caye Caulker Emergency Committee are advising as follows:
AIRCRAFT AND SATELLITE FIXES OVER THE PAST SIX HOURS OR SO GIVE ESSENTIALLY A DUE WESTWARD
MOTION AT A SLIGHTLY FASTER FORWARD SPEED...270/18.
DEEP-LAYER HIGH PRESSURE SYSTEM OVER THE SOUTH-EASTERN U.S. WILL BE THE DOMINANT STEERING MECHANISM FOR DEAN. THEREFORE...A WESTWARD TO WEST-NORTH-WESTWARD MOTION .. ALSO THE CONSENSUS OF MOST OF THE FORECAST MODELS IS LIKELY FOR THE NEXT COUPLE OF DAYS.

LANDFALL FOR THE CENTRE OF VERY DANGEROUS HURRICANE DEAN IS NOW FORECAST TO BE NEAR 21/0600Z 18.8N 87.0W WITH SUSTAINED MAXIMUM WIND SPEEDS OF 140 KT. NEAR 30 to 50 Miles north of Chetumal

THE GOVERNMENT OF BELIZE HAS THEREFORE RECOMMENDED IMMEDIATE VOLUNTARY EVACUATION OF LOW LYING AREAS AND THE OUTER ISLANDS AND CAYES TO BE BROUGHT TO COMPLETION AS SOON AS POSSIBLE.

NEMO IS URGING ALL RESIDENTS OF AMBERGRIS CAYE, SAN PEDRO AND CAYE CAULKER TO COMPLETE THEIR EVACUATION PLANS NOW.