Typhoon June (1975)

Typhoon June, known in the Philippines as Typhoon Rosing, was an extremely powerful tropical cyclone that is tied with Typhoon Nora in 1973 as the third-most intense tropical cyclone on record. The twenty-third named storm, fourteenth typhoon and third and final super typhoon of the 1975 Pacific typhoon season, June originated from a tropical disturbance moving westward over the Caroline Islands on November 14, organizing into a tropical depression two days later. The storm initially moved slowly due to weak steering forces from the system's close proximity to the equator, but began to move northwards on November 18. Simultaneously, June began to experience explosive intensification, with the central pressure falling by 90 mbar (2.7 inHg) in 24 hours. On November 19, a weather reconnaissance aircraft from the 54th Weather Reconnaissance Squadron of the United States Air Force measured a pressure of 875 mbar (25.8 inHg) at the edge of the eye. This made June the most intense tropical cyclone observed on record at the time, surpassing the pressure measured in Typhoon Ida in 1958 and tying it with Nora in 1973. Both have since been surpassed by 2015's Hurricane Patricia and 1979's Typhoon Tip. June continued to move northward through the Philippine Sea, weakening as it did so. The storm began accelerating into the westerlies before becoming extratropical on November 24. The remnants passed over the Aleutian Islands, before being last noted over Siberia, where it ultimately dissipated.

Despite the storm's extreme intensity, damage was relatively limited in Guam, and no casualties were caused by June, primarily as a result of staying west of the island chain, although storm surge was still a hazard that caused problems. June caused significant flooding and wind damage on Guam, some more localized then other areas, with total losses estimated at $1.3 million (1975 USD). At least 29 people were left homeless as a result. In Yap, the storm resulted in flood damage to property and crops on several atolls.