Hurricane Ivan, arguably

From the National Weather Service Tropical Prediction Center:

"AFTER CONSIDERABLE AND SOMETIMES ANIMATED IN-HOUSE DISCUSSION OF THE DEMISE OF IVAN...IN THE MIDST OF A LOW-PRESSURE AND SURFACE FRONTAL SYSTEM OVER THE EASTERN UNITED STATES...THE NATIONAL HURRICANE CENTER HAS DECIDED TO CALL THE TROPICAL CYCLONE NOW OVER THE GULF OF MEXICO TROPICAL DEPRESSION IVAN. WHILE DEBATE WILL SURELY CONTINUE HERE AND ELSEWHERE...THIS DECISION WAS BASED PRIMARILY ON THE REASONABLE CONTINUITY OBSERVED IN THE ANALYSIS OF THE SURFACE AND LOW-LEVEL CIRCULATION."

Link (Thanks, C-Lo!)