Passing a short distance north of the island, Typhoon Paka produced strong winds across northern Guam, though reliable wind reports are incomplete due to the long duration and intensity of the winds. The highest reading believed to be reliable was at Apra Harbor. There, a station recorded a wind gust of 277 km/h (171 mph) before the sensor failed as winds shifted to the southwest; since the winds from the southwest were stronger and of greater duration, officials believe gusts there reached 297 km/h (184 mph). Additionally, Andersen Air Force Base recorded a peak wind gust of 381 km/h (236 mph), which at the time was considered the highest wind speed on record, surpassing the 1934 world record of 372 km/h (231 mph) on Mount Washington in New Hampshire. However, a subsequent wind survey of the area discarded the reading at the base, as it was considered unreliable. As microbarographs are less exposed than wind sensors, pressure readings on the island are considered accurate; the lowest reading on the island was at Andersen Air Force Base. In two days, the typhoon dropped about 533 mm (21 in) of precipitation on the northern portion of the island, or about 89% of the monthly rainfall total. Waves along northern Guam reached about 11 m (35 ft) in height.