[8] For the first time this year the GCACIC issued forecasts in May and July, which predicted how many tropical cyclones would make landfall in South China, and pass within 100 km (62 mi) of either the Korean Peninsula or Japan during 2010.

[12] As a result of being under the influence of a weakening El Niño, the HKO also predicted that the chances of a tropical cyclone affecting Hong Kong before June was not high.

[citation needed] After 01W had dissipated the Western Pacific became dormant until Tropical Storm Omais formed about 325 km (202 mi) to the southeast of Chuuk Island on March 22.

During the next couple of days Omais impacted the Micronesian islands of Woleai, Fais Ulithi and Yap, before moving into the Philippine area of responsibility and being named as Agaton by PAGASA.

Early on January 18 the JMA reported that it was upgraded to a tropical depression which had formed within the northeast monsoon about 320 km (200 mi) to the north-west of Bandar Seri Begawan in Brunei.

[17] However over the next 12 hours, whilst the depression moved towards Vietnam, the low level circulation center rapidly consolidated and became well defined after the vertical wind shear around the system relaxed.

[18] During the next day, the depression weakened with the low level circulation center becoming partially exposed, as it moved over an area of cold sea surface temperatures.

[21] The depression then made landfall on Vietnam near Gò Công early on January 20 before the JMA then issued their final advisory later that day as the system dissipated over Cambodia.

[25] On March 18, the JTWC reported that an area of deep atmospheric convection had persisted about 325 km (202 mi) to the southeast of Chuuk Island in southern Micronesia.

[26] Over the next couple of days both the low level circulation center and the deep convection gradually became better organized, prompting the issuance of a Tropical Cyclone Formation Alert late on March 20.

After passing close to Hainan island, Conson moved into an area with high levels of vertical wind shear and as a result it rapidly weakened into a tropical storm, before making landfall in Vietnam during July 17.

However, as the low level circulation center was located close to land and was not very organized, the JTWC declared that there was a poor chance of it becoming a significant tropical cyclone within 48 hours.

As a result, early the next day the JTWC issued a Tropical Cyclone Formation Alert on the depression, however they thought that further development might be hindered as it was located close to land.

Whilst it moved along the southern edge of the subtropical ridge, the Depression made landfall on Aurora province at 0600 UTC, before the JTWC initiated advisories later that morning, as the low level circulation center had consolidated and poleward outflow into the tropical upper tropospheric trough had improved.

However, on the evening of August 18, as it crossed Babuyan Islands, the disturbance's low level center (LLC) weakened due to land interaction and high vertical wind shear.

Early on the next day, the disturbance started to move west and located in warm water temperatures and favorable conditions with moderate vertical wind shear.

The storm later weakened to a Category 1 typhoon in the Yellow Sea, before veering northeast and making landfall on Ganghwa Island, northwest of Incheon and Seoul, killing at least four people.

In the evening hours of August 31, Namtheun weakened into a tropical depression north of Taiwan Strait, then continued to move south to southwest, and skirted the southern coast of Fujian province.

Nevertheless, it lingered over Kantō region and caused heavy rain in Greater Tokyo Area[citation needed] until it transitioned into a polar low on September 10.

Later that day the JTWC started to monitor the system and reported that the depression, had an unorganized low level circulation center that had convection flaring over it and was located in a favorable environment of decreasing vertical windshear and high sea surface temperatures.

During this time, the remnant low regenerated slightly, but didn't restrengthen into a tropical depression, and the system dissipated on October 11 near Hong Kong.

However, early, the next day the JMA reported that the system had re-intensified into a tropical depression and reissuing advisories on it, whilst it was located about 1,400 km (870 mi) to the southwest of Chiba, Japan.

[100][101] On December 13, JTWC and the JMA both issued their last advisory on Tropical Depression 19W, as it dissipated completely over the northwestern part of the South China Sea, without impacting any major land masses.

[104][102][105] Early on December 20, the system crossed over the International Date Line into the Central Pacific basin, where the CPHC named it Tropical Storm Omeka.

On the same time, the disturbance suddenly strengthened and its LLCC began to consolidate as well as significant banding all over the system and located over moderate vertical wind shear.

[109] During the next 36 hours the low-pressure area moved to the east before late on June 3, the JMA reported that the system had intensified into a tropical depression whilst located about 600 km (370 mi) to the northwest of Manila, Philippines.

[122] During the next day, the depression remained offshore and moved towards the north, passing about 120 km (75 mi) to the southeast of Shanghai,[123] before weakening into an area of low pressure on July 28.

[131] Late on August 28, the Central Pacific Hurricane Center reported that an area of low pressure, associated with a tropical disturbance, had developed about 1,000 mi (1,600 km) to the southwest of Honolulu, Hawaii.

[136] On November 3, the JMA reported that a tropical depression had developed within an area of moderate vertical windshear, about 500 km (310 mi) to the northeast of Ho Chi Minh City in Southern Vietnam.

[137][138] During that day the depression moved westwards as its low level circulation center gradually consolidated further, before the JTWC issued a Tropical Cyclone Formation Alert on the system.