While the storm was active the Bureau of Meteorology's Darwin Tropical Cyclone Warning Centre estimated that Monica, had peaked with a minimum pressure of . However, during their post analysis of Monica, the Darwin Tropical Cyclone Warning Centre estimated using the Love-Murphy pressure-wind relationship, that the system had a minimum pressure of . However, since then the BoM has started to use the Knaff, Zehr and Courtney pressure-wind relationship, which has estimated that Monica had a minimum pressure of . Other pressure estimates include the Joint Typhoon Warning Center's post analysis estimated pressure of and the University of Wisconsin-Madison's Advanced Dvorak Technique which estimated a minimum pressure of . The Advanced Dvorak Technique pressure estimate would suggest that the system was the most intense tropical cyclone ever recorded worldwide as the pressure is below that of the current world record holder, Typhoon Tip of 1979. In 2010, Stephen Durden of NASA's Jet Propulsion Laboratory studied Cyclone Monica's minimum pressure and suggested that the system likely peaked between and strongly refuted claims that Monica was the strongest tropical cyclone on record.