The National Hurricane Center's "best track" data set has Patsy exclusively east of the dateline from detection to dissipation. The Japan Meteorological Agency's "best track" does not give windspeeds, only indicating that Patsy was a typhoon. The Joint Typhoon Warning Center's report disagrees on location but also has Patsy's maximum windspeed east of the dateline; the JMA's data does not indicate windspeeds. Patsy was the first known Pacific hurricane to reach Category 5 intensity on the Saffir-Simpson Hurricane Scale. Also, its maximum reported windspeed of makes it the central Pacific hurricane with the highest sustained winds until Hurricane John tied this record in 1994.