[3] Broadly speaking, ACE is a measure of the power of a tropical or subtropical storm multiplied by the length of time it existed.
It is only calculated for full advisories on specific tropical and subtropical systems reaching or exceeding wind speeds of 39 miles per hour (63 km/h).
[4] As a result, on 4 January, the Japan Meteorological Agency (JMA) noted that the northern area of convection had developed into a tropical depression.
[4] As a result of favorable upper-level divergence, Axel was able to significantly intensify,[4] with the JMA noting that the cyclone had developed into a severe tropical storm the next day.
[8] On 20 June, a poorly organized area of convection south of Guam near the central Caroline Islands began developing.
[9][5] Just a few hours later, Bobbie began undergoing a binary interaction with nearby Tropical Storm Chuck, which at the time, just formed off the Philippines.
[5] On 18:00 UTC on 26 June, Bobbie peaked with 1-minute sustained winds of 140 mph (220 km/h) as it tracked the western extent of the mid-level subtropical ridge.
[9] As Bobbie transitioned into an extratropical storm, the JTWC issued their final warning on the system the next day, prior to it brushing the southern tip of Honshu.
[11] However, combined with the effects of nearby Chuck, heavy rainfall would produce mudflows pouring down the Bucao, Balinquero and Maraunot rivers, causing them to rise up 6 ft (1.8 m).
[15] Initially weakening as it traversed the Philippines, once it crossed into the South China Sea two days later, the convection of the disturbance began organizing.
[15] Weakening into a tropical storm as it crossed into the Gulf of Tonkin,[15][5] Chuck made its second landfall around 100 mi (160 km) east-southeast of Hanoi early on 29 June.
Massive waves engulfed several coastal fishing villages in Cát Hải district, with seven people being missing there.
[12] On 25 June, the Joint Typhoon Warning Center (JTWC) began tracking a tropical disturbance over the open Pacific.
[18] Initially, the depression was slow to consolidate due to wind shear produced by a nearby Typhoon Bobby alongside a tropical upper tropospheric trough (TUTT).
[20] Additionally, the remnants of Deanna produced moderate to heavy rainfall in the Ryukyu Islands and Southern Japan.
Omar begin to track westward, causing the outflow of Tropical Storm Polly to shear the system and slowing intensification.
Typhoon Omar was a destructive storm to Guam, causing over a foot of rain there, amounting to $702 million in damage (2008 USD) and a death.
Developing to Omar's west, Polly began its life on August 23 and reached tropical storm strength on the 26th.
Torrential rains produced by Tropical Storm Polly triggered devastating floods that killed 202 people and injured hundreds more.
[22] Typhoon Sibyl took an unusual track east of Japan, first heading northward, then back south, and finally north again while strengthening.
Winds at this time were estimated at 40 mph (64 km/h);[23] the Japan Meteorological Agency reported the system to have also attained a pressure of 1,002 mbar (1,002 hPa; 29.6 inHg).
It rapidly intensified into a super typhoon which started to recurve out at sea, preventing major impacts at the Philippines.
It passed within 30 nautical miles (56 kilometres) of Wake Island, causing a minor pressure dip and gusts to 32 kn (60 km/h).
No damage was reported, due to the relative weakness of 29W as compared to Dan, which ravaged the island 3 days earlier.
Typhoon Gay was the strongest and longest-lasting storm of the season, forming on November 13 near the International Date Line.
However, the Japan Meteorological Agency (JMA), which is the official warning center in the western Pacific, estimated winds of 205 km/h (127 mph), with a pressure of 900 mbar (27 inHg).
[26][27] The typhoon first affected the Marshall Islands, where 5,000 people were left homeless and heavy crop damage was reported.
The Philippine Atmospheric, Geophysical and Astronomical Services Administration uses its own naming scheme for tropical cyclones in their area of responsibility.
Due to extensive damage caused by Omar in Guam, the name was later retired and was replaced by Oscar and was first used in the 1995 season.
This table summarizes all the systems that developed within or moved into the North Pacific Ocean, to the west of the International Date Line during 1992.