There, Irving uprooted trees, downed power and telephone lines, triggered landslides, and forced the cancellation of several domestic airline flights.

Land interaction with Hainan Island resulted in a weakening trend, and Irving was downgraded to a tropical storm before striking the southern coast of China on September 15.

Typhoon Irving originated from an area of poorly organized convection associated with an active monsoon trough anchored south of Guam in early September 1982.

The circulation then became more developed and an increase in cloud organization was seen on satellite imagery, prompting the issuance of a Tropical Cyclone Formation Alert early on September 5.

[2] At 06:00 UTC, the Japan Meteorological Agency (JMA) upgraded the system into a tropical depression,[3][nb 1] and three hours later, the Joint Typhoon Warning Center (JTWC) classified the system as Tropical Depression 18, after a Hurricane hunter aircraft closed off a surface circulation with observed winds near 55 km/h (35 mph).

Irving entered the open waters of the South China Sea, 30 mi (50 km) southwest of Cubi Point Naval Air Station, at 17:00 UTC on September 9.

[2] As Irving moved into the South China Sea, a return to a more westward track and gradual intensification were forecast by the JTWC, in part because the subtropical ridge was anticipated to remain anchored north of the system.

[7] Post-storm analysis by the JTWC, however, revealed that Irving attained typhoon intensity about 24 hours earlier, early on September 11.

At noon on September 12, the JMA estimates that Irving attained its maximum intensity of 160 km/h (100 mph) and a minimum barometric pressure of 30 inHg (950 mbar).

[6] At the time of its peak, Typhoon Irving had a very tight circulation, with the radius of 95 km/h (60 mph) winds within 110 km (68 mi) of the center during this period of maximum intensity.

On September 15, as the system began to interact with Hainan Island and the coast of China, Irving was downgraded to tropical storm strength by the JTWC[2] and the JMA.

[2] Across the Philippines, Irving battered a dozen provinces in the southern section of Luzon, toppling trees and ripping off rooftops.

A minimum pressure of 1005.8 mbar (29.70 inHg) was recorded at the Hong Kong Royal Observatory (HKO) on the afternoon of September 13.