[14][15][16][17] As the depression was moving into a high level of vertical wind shear, it did not develop any further and late on January 5 as the baroclinic zone approached Auring, it was downgraded to a low-pressure area by PAGASA before the JMA followed suit the next day as it was declared as dissipated by the JTWC.

[25] Early on February 12, PAGASA reported that a low-pressure area located about 140 km (87 mi) to the east of Surigao City in the Philippines had intensified into a tropical depression.

[35] Later that day the JTWC reported that Crising's low-level circulation center has weakened and was now poorly organized as it underwent a Fujiwhara effect with what was to become Typhoon Kujira (Dante).

On May 6, The JTWC reported that Kujira was in its beginning stages of becoming extratropical, with the low-level circulation center almost fully exposed in association with increasing vertical wind shear and lower sea surface temperatures in the region.

However, JMA did not issue the final advisory for the tropical depression until early on May 13, when the storm's low-level circulation dissipated and began accelerate northeastward, as it was caught up in the jet stream, at which time it was forecast to become extratropical or be absorbed by a cold front.

[45] Over the next couple of days, the disturbance gradually developed with the JMA declaring the system as a tropical depression early on June 14 whilst the JTWC issued a TCFA.

[63] Deep convection then rapidly dissipated with both the JMA and the JTWC downgrading Linfa to a Tropical depression by early on June 22, as the storm moved away from the Chinese coastline.

Early on June 22, JTWC issued an advisory that the potential of the formation of a significant tropical cyclone within 24 hours was upgraded to "Fair" because of its well-defined LLCC and was located in a favorable area.

Deep convection was embedded in a broad, weak, poorly defined circulation that was starting to be enhanced by a tropical upper tropospheric trough (TUTT) cell to the east of the system.

[80] Over the next couple of days, gradual development took place before a TCFA was released by the JTWC early on July 9 as PAGASA designated the system as Tropical Depression Gorio.

[91][92][93] As a tropical depression, Soudelor brushed northern Luzon in the Philippines, producing upwards of 330 mm (13 in) of rainfall which resulted in flash flooding and landslides in at least ten villages.

Early the next day the JTWC reissued their TCFA whilst PAGASA issued their final warning on Jolina as it moved out of their area of responsibility heading towards a landfall on China.

[107][108] Still later that day, the JMA reported that the tropical depression had regenerated[109] and that deep convection was flaring on the western side of a partially exposed low-level circulation center.

[113] In Taiwan, where schools were closed ahead of the typhoon, Morakot caused landslides, severe floods, blew down trees and billboards, and stripped roofs from buildings.

Later that day the JTWC reported that the depression was located about 1,425 km (885 mi) to the southeast of Wake Island, with deep convection developing over the northern quadrant of a stretched out, low-level circulation center which was in an area of low to moderate vertical wind shear and had a good outflow into an upper-level trough.

[137] Satellite imagery shows that convective bands is starting to wrap into the Low-Level Circulation Centre (LLCC) and the system is located in moderate vertical windshear and favorable area.

[140][141] Thus the tropical depression began to weaken with the low-level circulation center becoming fully exposed and sheared as a result the JTWC issued their final advisory later that day.

[145] Satellite imagery revealed that a partial low-level circulation centre (LLCC) was exposed with an anticyclone providing good outflow that located to the northwest of the system.

[155][160] During September 19, Choi-wan rapidly weakened, as it moved into an unfavorable environment with higher amounts of vertical wind shear, causing the storm's deep convection to erode.

On September 11, the LLCC started to show improvement and was under moderate vertical shear with good westward outflow, but the JMA still upgraded the system to a minor tropical depression.

Also, PAGASA has alerted the National Disaster Coordinating Council (NDCC) for possible flashfloods and landslides in the affected areas, particularly in Laguna, Quezon, Zambales, Pampanga and Bataan provinces.

Bulacan also experienced an unusually high rainfall amount leading to the widespread and massive flooding in the province and overflowing of the Angat dam and opening of the floodgates at about 10:45 am.

[170][171][172] During the next couple of days very little intensification took place as convection barely deepened around the low-level circulation center and in fact weakened due to the precursor system to Typhoon Parma was developing to the southeast of 18W.

[174] As it passed near the island, the storm rapidly dissipated, first weakening to a depression and then as it lost its low-level circulation centre it was no longer considered a tropical cyclone and thus the final warnings from the JTWC and the JMA were issued.

On the evening of September 28, due to a TUTT that was providing good outflow for the system and low-level vertical wind shear with a favorable environment, the JTWC issued a Tropical Cyclone Formation Alert.

Late on October 31, the JTWC reported that a tropical disturbance had formed within an area of moderate vertical windshear about 1,400 km (870 mi), to the east of Manila, Philippines.

[203] Early on November 21 the Joint Typhoon Warning Center (JTWC) reported that an area of convection had persisted within a monsoon trough about 880 km (550 mi) to the southeast of Guam island.

[204][205] At this time the system was moving around the subtropical ridge of pressure, with an anticyclone over the cyclone helping the convection to consolidate over a broad and elongated low level circulation center which was located in an area of minimal vertical wind shear.

[223][224] On December 2, the JTWC issued a TCFA as the disturbance moved close to the upper-level ridge axis which was providing an area of low vertical wind shear and gave the system a good chance of development within 12–24 hours.

[231] The JTWC also issued their final warning at the same time as the depression was beginning to go through an extra tropical transition with dry air entering the cyclone and breaking down the storms warm core as it moved over an area of unfavourable vertical wind shear and sea surface temperatures of less than 26 °C (79 °F).