text:  Several agencies issue Dvorak intensity numbers for tropical cyclones and their precursors . These include the National Hurricane Center 's Tropical Analysis and <unk> Branch ( <unk> ) , the National <unk> and <unk> Administration 's <unk> Analysis Branch ( <unk> ) , and the Joint Typhoon Warning Center at the Naval Pacific Meteorology and <unk> Center in Pearl Harbor , Hawaii . 
  