Dean is just 1 mile an hour shy of Category 5 at 8pm update! Posted on August 20, 2007 By Mid Atlantic Weather No Comments on Dean is just 1 mile an hour shy of Category 5 at 8pm update! WOW! What a system. He is so well defined and truly devastating! I hope the best for those near Belize tonight and do not which that type of situation on anyone! All for now! Forecast Discussion