The typhoon was also the most intense tropical cyclone on record, with a pressure of , lower than the previous record set by Super Typhoon June in 1975. The records set by Tip still technically stand, though with the end of routine reconnaissance aircraft flights in the western Pacific Ocean in August 1987, modern researchers have questioned whether Tip indeed remains the strongest. After a detailed study, three researchers determined that two typhoons, Angela in 1995 and Gay in 1992, registered higher Dvorak numbers than Tip, and concluded that one or both of the two may have therefore been more intense. Other recent storms may have also been more intense than Tip at its peak; for instance, satellite-derived intensity estimates for Typhoon Haiyan of 2013 indicated that its core pressure may have been as low as . Due to the dearth of direct observations and Hurricane hunters into these cyclones, conclusive data is lacking. In October 2015, Hurricane Patricia reached an estimated peak intensity of , with maximum 1-minute sustained winds of 345 km/h (215 mph), making Patricia the second-most intense tropical cyclone recorded worldwide. However, the NHC noted in their report on the cyclone that Patricia may have surpassed Tip at the time of its peak intensity, as it was undergoing rapid intensification; however, due to the lack of direct aircraft observations at the time of the storm's peak, this possibility cannot be determined.