 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 948 hPa ( 27 @.@ 99 inHg ) 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 . 
