Tag Archives: Vietnam

Typhoon Phanfone Moves Away from the Philippines

Typhoon Phanfone moved away from the Philippines on Wednesday after bringing wind and rain to the central Philippines.  At 10:00 p.m. EST on Wednesday the center of Typhoon Phanfone was located at latitude 13.2°N and longitude 118.3°E which put it about 190 miles (310 km) west-southwest of Manila, Philippines.  Phanfone was moving toward the west-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 115 m.p.h. (185 km/h).  The minimum surface pressure was 975 mb.

Typhoon Phanfone weakened earlier on Wednesday.  The core of Phanfone moved over southern Mindoro and the typhoon weakened when the circulation was disrupted by the mountains.  Satellite imagery suggested that the circulation around Typhoon Phanfone might be reorganizing on Wednesday night.  A small circular eye reappeared on visible satellite images.  Thunderstorms in the eyewall were growing taller.  Storms around the core of Phanfone were generating upper level divergence which was pumping mass away from the typhoon.  Winds to typhoon force extended out 40 miles (65 km) north of the center of circulation and out 20 miles (30 km) south of the center.  Winds to tropical storm force extended out 100 miles (160 km) from the center of Phanfone.

Typhoon Phanfone will move through an environment capable of supporting a typhoon for another 24 hours.  Phanfone will move over water where the Sea Surface Temperature is near 29°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  In about 24 hours Typhoon Phanfone will reach an area where winds near the surface are blowing from the northeast.  Those winds will bring drier air which will get pulled into the circulation around Phanfone.  Typhoon Phanfone will weaken when the drier air enters its circulation.

Typhoon Phanfone will move south of a subtropical high pressure system over the Western North Pacific Ocean.  The high will steer Phanfone toward the west-northwest.  On its anticipated track Typhoon Phanfone will move across the South China Sea and it will move farther away from the Philippines.

Tropical Storm Fung-wong Nears Southern Ryukyu Islands

Tropical Storm Fung-wong neared the southern Ryukyu Islands on Thursday night.  At 10:00 p.m. EDT on Thursday the center of Tropical Storm Fung-wong was located at latitude 23.3°N and longitude 124.9°E which put it about 110 miles (175 km) south-southwest of Harari, Japan.  Fung-wong was moving toward the north-northeast at13 m.p.h. (20 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 989 mb.

Tropical Storm Fung-wong was weakening gradually as it neared the southern Ryukyu Islands.  An upper level trough over east Asia was producing southwesterly winds which were blowing toward the top of the circulation.  Those winds were causing moderate vertical wind shear.  There was still a well defined low level center of circulation.  A broken ring of thunderstorms surrounded the center and the strongest winds were occurring near the center of Fung-wong.  Most of the stronger thunderstorms were occurring in bands north and east of the center of circulation.  Bands in the southern and western parts of the tropical storm consisted primarily of showers and lower clouds.  Winds to tropical storm force extended out 120 miles (195 km) from the center of circulation.

A high pressure system over the Western North Pacific Ocean and the trough over east Asia will interact to steer Tropical Storm Fung-wong toward the north-northeast during the next 24 to 36 hours.  On its anticipated track Fung-wong will move over the southern Ryukyu Islands during the next 24 hours.  The center of the tropical storm could pass close to Miyako Jima in about 12 hours.  Tropical Storm Fung-wong will continue to weaken gradually because of the moderate vertical wind shear.  Fung-wong will bring gusty winds and locally heavy rain to some of the southern Ryukyu Islands.  Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Depression Kalmaegi was moving across the South China Sea toward Vietnam.  At 10:00 p.m. EST on Thursday the center of Tropical Depression Kalmaegi was located at latitude 11.5°N and longitude 114.5°E which put it about 550 miles (890 km) east of Ho Chi Minh City, Vietnam.  Kalmaegi was moving toward the west-southwest at 11 m.p.h. (17 km/h).  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1004 mb.  Tropical Depression Kalmaegi could drop locally heavy rain over parts of southern Vietnam during the weekend.

Tropical Storm Nakri Brings Wind, Rain to Vietnam and Cambodia

Tropical Storm Nakri brought wind and rain to Vietnam and Cambodia on Sunday.  At 4:00 p.m. EST on Sunday the center of Tropical Storm Nakri was located at latitude 13.0°N and longitude 108.9°E which put it about 20 miles (35 km) west of Tuy Hoa, Vietnam.  Nakri was moving toward the west at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 992 mb.

The center of Tropical Storm Nakri made landfall on the coast of Vietnam near Tuy Hoa on Sunday.  The maximum sustained wind speed at the time of landfall was 65 m.p.h. (105 km/h).  Nakri moved slowly toward the west after it made landfall.  Tropical Storm Nakri has been weakening slowly since the center moved over land.  The heaviest rain was falling in bands in the western half of the circulation.  Heavy rain was falling over portions of southern Vietnam and northeastern Cambodia.  The strongest winds were occurring in the eastern half of Nakri which was still over the South China Sea.  Winds to tropical storm force extended out 60 miles (95 km) from the center of circulation.

Tropical Storm Nakri will move south of a ridge over high pressure over the South China Sea and southeast Asia.  The ridge will steer Nakri toward the west-northwest during the next 24 to 36 hours.  Tropical Storm Nakri will continue to weaken as it moves farther inland.  On its anticipated track Nakri will drop locally heavy rain over parts of southern Vietnam, northern Cambodia, southern Laos and eastern Thailand.  Heavy rain could cause flash floods in some locations.

Nakri Strengthens to a Typhoon and Moves Toward Vietnam

Former Tropical Storm Nakri strengthened into a typhoon and started to move toward Vietnam on Friday.  At 4:00 p.m. EST on Friday the center of Typhoon Nakri was located at latitude 12.9°N and longitude 114.9°E which put it about 395 miles (635 km) east of Quy Nhon, Vietnam.  Nakri was moving toward the west at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 977 mb.

The distribution of thunderstorms around Typhoon Nakri was asymmetrical.  A broken ring of showers and thunderstorms surrounded the center of Nakri.  The strongest thunderstorms were in the southern portion of the ring.  Most of the strongest rainbands were in the southern half of the typhoon, although there was one strong rainband along the northern periphery of the circulation.  Many of the other bands on the eastern and northern sides of Typhoon Nakri consisted primarily of showers and lower clouds.  It appeared that sinking, drier air was limiting the development of thunderstorms in the northern half of the circulation.

In spite of the effects of the drier air, the size of the circulation around Typhoon Nakri increased on Friday.  Winds to typhoon force extended out 45 miles (75 km) from the center of circulation.  Winds to tropical storm force extended out 175 miles (280 km) from the center.

Typhoon Nakri will be moving through an environment marginally favorable for intensification during the next 12 to 24 hours.  Nakri will move over water where the Sea Surface Temperature is near 28°C.  It will move around the southern side of an upper level ridge over southeast Asia and the South China Sea.  The ridge will produce easterly winds which will blow toward the top of the circulation.  Those winds will cause moderate vertical wind shear which will inhibit intensification.  Drier air to the north of Typhoon Nakri will also inhibit intensification.  Nakri is likely to maintain its intensity during the next day or so, but it could start to weaken if the wind shear increases or more drier air sinks over the circulation.

The ridge over southeast Asia and the South China Sea will steer Typhoon Nakri toward the west during the next two to three days.  On its anticipated track Typhoon Nakri could approach the coast of Vietnam in about 48 hours.  Typhoon Nakri could bring gusty winds and a storm surge for the central coast of Vietnam.  Nakri could drop locally heavy rainfall when it moves inland and flash floods could occur in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Halong was speeding away from Miami Tori Shima, Japan.  At 4:00 p.m. EDT on Friday the center of Tropical Storm Halong was located at latitude 30.9°N and longitude 161.1°E which put it about 580 miles (935 km) northeast of Minami Tori Shima, Japan.  Halong was moving toward the northeast at 14 m.p.h. (22 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 983 mb.

Tropical Storm Nakri Stalls West of the Philippines

Tropical Storm Nakri stalled west of the Philippines on Thursday.  At 10:00 p.m. EST on Thursday the center of Tropical Storm Nakri was located at latitude 12.8°N and longitude 116.8°E which put it about 290 miles (465 km) west-southwest of Manila, Philippines.  Nakri was moving toward the south at 2 m.p.h.  The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h).  The minimum surface pressure was 980 mb.

Tropical Storm Nakri meandered slowly west of the Philippines on Thursday.  The structure of Nakri did not change a lot during the day.  There was a distinct low level center center of circulation.  Thunderstorms were forming on the south side of the center and the strongest winds were occurring in those thunderstorms.  Thunderstorms were also developing in bands in the southern half of Tropical Storm Nakri.  Bands in the northern half of the circulation consisted primarily of showers and lower clouds.  Storms south of the center generated upper level divergence that pumped mass away to the west of the tropical storm.  Winds to tropical storm force extended out 175 miles (280 km) from the center of circulation.

Tropical Storm Nakri will move through an environment favorable for intensification during the next 24 to 36 hours.  Nakri mixed cooler water to the surface during the period when it meandered west of the Philippines, but it will move over water where the Sea Surface Temperature is near 29°C when it starts moving.  Tropical Storm Nakri will move southeast of an upper level ridge over southeast Asia.  The ridge will produce easterly winds which will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but it will not be strong enough to prevent Tropical Storm Nakri from strengthening.  Nakri will likely become a typhoon on Friday or Saturday.

Tropical Storm Nakri has been in an area where the steering winds have been weak and it has moved little during the past 24 hours.  The ridge over southeast Asia will strengthen and it will steer Nakri toward the east during the next 72 hours.  On its anticipated track Tropical Storm Nakri could approach the coast of Vietnam in less than 72 hours.  Nakri is likely to be a typhoon when it approaches the coast of Vietnam.

Elsewhere over the Western North Pacific Ocean, Typhoon Halong was passing north of Minami Tori Shima, Japan.  At 10:00 p.m. EST on Thursday the center of Typhoon Halong was located at latitude 27.2°N and longitude 154.4°E which put it about 175 miles (280 km) north of Minami Tori Shima, Japan.  Halong was moving toward the northeast at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 115 m.p.h. (185 km/h).  The minimum surface pressure was 968 mb.

Typhoon Halong Intensifies into Equivalent of Cat. 5 Hurricane

Typhoon Halong intensified into the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale on Tuesday.  At 4:00 p.m. EST on Tuesday the center of Typhoon Halong was located at latitude 20.4°N and longitude 150.6°E which put it about 345 miles (560 km) southwest of Minami Tori Shima, Japan.  Halong was moving toward the north-northwest at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 180 m.p.h. (290 km/h) and there were wind gusts to 220 m.p.h. (355 km/h).  The minimum surface pressure was 900 mb.

Typhoon Halong intensified into one of the strongest tropical cyclones of 2019 over the Western North Pacific Ocean on Tuesday.  There was a circular eye with a diameter of 15 miles (24 km) at the center of Halong.  The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Typhoon Halong.  Storm near the core were generating strong upper level divergence which was pumping mass away to the northeast of the typhoon.

The circulation around Typhoon along was compact and symmetrical.  Winds to typhoon force extended out 25 miles (40 km) from the center of circulation.  Winds to tropical storm force extended out 115 miles (185 km) from the center.  The Hurricane Intensity Index (HII) for Typhoon Halong was 42.2.  The Hurricane Size Index (HSI) was 9.4 and the Hurricane Wind Intensity Size Index (HWISI) was 51.6.

Typhoon Halong has probably reached its peak intensity.  Halong will move over water where the Sea Surface Temperature is near 29°C.  However, an upper level trough near Japan will approach Typhoon Halong from the northwest.  The trough will produce strong southwesterly winds which will start to increase the vertical wind shear.  More wind shear will cause Halong to weaken.

The upper level trough will start to steer Typhoon Halong toward the northeast in 12 to 24 hours.  On its anticipated track Typhoon Halong will pass northwest of Minami Tori Shima on Thursday.  Even though it will weaken, Halong will bring strong, gusty winds and heavy rain.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Nakri developed over the South China Sea between the Philippines and Vietnam on Tuesday.  At 4:00 p.m. EST on Tuesday the center of Tropical Storm Nakri was located at latitude 13.8°N and longitude 116.0°E which put it about 380 miles (615 km) west of Manila, Philippines.  Nakri was moving toward the northeast at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 998 mb.

Although Tropical Storm Nakri is currently moving toward the northeast, it is forecast to move back toward the west later this week.  Nakri will move through an environment favorable for intensification.  It will move over water where the Sea Surface Temperature is near 28°C.  Tropical Storm Nakri could strengthen into a typhoon before it reaches the coast of Vietnam.

Tropical Storm Matmo Makes Landfall in Vietnam

Tropical Storm Matmo made landfall on the southern coast of Vietnam near Quy Nhon on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Matmo was located at latitude 13.7°N and longitude 108.2°E which put it about 50 miles (80 km) west of Quy Nhon, Vietnam.  Matmo was moving toward the west at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 944 mb.

Tropical Storm Matmo organized quickly as it approached the coast of southern Vietnam on Wednesday.  The inner end of a band of showers and thunderstorms wrapped about 75% around the center of circulation and an eye appeared to be forming.  Thunderstorms near the center of Matmo were generating upper level divergence which was pumping mass away from the tropical storm.  The removal of mass allowed the pressure to decrease which caused the wind speed to increase.  The maximum sustained wind speed at the time when Tropical Storm Matmo made landfall was 60-65 m.p.h. (95-105 km/h).

Tropical Storm Matmo began to weaken after the center moved over land.  The strongest winds were occurring in bands of showers and thunderstorms in the eastern half of Matmo over the South China Sea.  Wind speeds in the parts of the circulation what were over land were less.  Tropical Storm Matmo will continue to move westward during the next several days.  Matmo will drop heavy rain over parts of southern Vietnam, Cambodia, southern Laos, and Thailand.  Heavy rain could cause floods in some locations.

Tropical Storm Matmo Forms East of Vietnam

Tropical Storm Matmo formed over the South China Sea east of Vietnam on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Matmo was located at latitude 12.7°N and longitude 112.2°E which put it about 60 miles (260 km) east of Dai Lanh, Vietnam.  Matmo was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 998 mb.

More thunderstorms developed near the center of a low pressure system over the South China Sea east of Vietnam on Tuesday and the Japan Meteorological Agency designated the system as Tropical Storm Matmo.  The circulation around Tropical Storm Matmo was still organizing.  Thunderstorms were forming around the center of circulation.  Bands of showers and thunderstorms were developing in the northern and western parts of the tropical storm.  Bands in the eastern and southern parts of the circulation consisted primarily of showers and lower clouds.  Storms near the center of circulation were beginning to generate upper level divergence.

Tropical Storm Matmo will move through an environment favorable for intensification during the next 12 to 18 hours.  Matmo will move over water where the Sea Surface Temperature is near 29°C.  It will move under the west part of an upper level ridge where the winds are weaker and where there is less vertical wind shear.  Tropical Storm Matmo could strengthen during the next 12 hours.  Matmo will near the coast of Vietnam in about 12 hours and it will start to weaken when the center moves over land.

Tropical Storm Matmo will move south of a ridge of high pressure over the Western North Pacific Ocean.  The ridge will steer Matmo toward the west.  On its anticipated track Tropical Storm Matmo could make landfall on the coast of Vietnam between Dai Lanh and Quy Nhon in 12 to 18 hours.  Matmo will bring gusty winds to the coastal regions of southern Vietnam.  Tropical Storm Matmo could also drop heavy rain over parts of southern Vietnam, Cambodia, southern Laos and eastern Thailand.  Heavy rain could cause floods in some locations.

Lingling Strengthens to Typhoon South of Ryukyu Islands

Former Tropical Storm Lingling strengthened to a typhoon south of the Ryukyu Islands on Tuesday.  At 11:00 a.m. EDT on Tuesday the center of Typhoon Lingling was located at latitude 21.7°N and longitude 124.3°E which put it about 180 miles (295 km) south of Ishigaki, Japan.  Lingling was moving toward the north at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 979 mb.

Typhoon Lingling exhibited much greater organization on Tuesday.  A circular eye with a diameter of 30 miles (50 km) developed at the center of circulation.  The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Typhoon Lingling.  The strongest rainbands were occurring in the southeastern half of the circulation.  Storms near the core of Lingling were generating upper level divergence which was pumping mass away from the typhoon.  Winds to typhoon force extended out about 30 miles from the center of circulation.  Winds to tropical storm force extended out about 140 miles (220 km) from the center.

Typhoon Lingling will move through an environment favorable for intensification during the next 24 to 48 hours.  Lingling will move over water where the Sea Surface Temperature is near 28°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Typhoon Lingling is likely to continue to intensify and it could strengthen into the equivalent of a major hurricane in a couple of days.

Typhoon Lingling is moving around the western end of a large subtropical ridge over the Western North Pacific Ocean.  The ridge will steer Lingling toward the north during the next several days.  On its anticipated track Typhoon Lingling could reach the southern Ryukyu Islands within 24 hours.  Lingling will bring strong, gusty winds and heavy rain to those islands.  Typhoon Lingling could approach Kyushu and South Korea in about three days.

Elsewhere over the Western North Pacific Ocean, Tropical Depression Kajiki was dropping heavy rain over parts of Vietnam and Laos.  At 11:00 a.m. EDT on Tuesday the center of Tropical Depression Kajiki was located at latitude 16.4°N and longitude 107.3°E which put it about 65 miles (105 km) west-northwest of Da Nang, Vietnam.  Kajiki was moving toward the west at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 998 mb.

Tropical Storm Kajiki Forms Near Vietnam

Tropical Storm Kajiki formed near the coast of Vietnam on Monday.  At 5:00 p.m. EDT on Sunday the center of Tropical Storm Kajiki was located at latitude 16.6°N and longitude 107.6°E which put it about 50 miles (80 km) northeast of Vinh Linh, Vietnam.  Kajiki was moving toward the southwest at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 996 mb.

The wind speed around a low pressure system just east of the coast of Vietnam increased to 40 m.p.h. (65 km/h) on Monday and the Japan Meteorological Agency designated the system as Tropical Storm Kajiki.  The distribution of thunderstorms around Kajiki was asymmetrical.  Many of the stronger thunderstorms were occurring in bands in the western half of the circulation.  Bands in the eastern half of Tropical Storm Kajiki contained fewer thunderstorms.  Kajiki was moving south of an upper level ridge over eastern Asia.  The ridge was producing northeasterly winds which were blowing toward the top of the tropical storm.  Those winds were causing moderate vertical wind shear and they were the reason for the asymmetrical distribution of thunderstorms.

The upper level ridge will steer Tropical Storm Kajiki toward the southwest during the next 12 to 24 hours.  On it anticipated track Kajiki will reach the coast of Vietnam within 12 hours.  Even though Tropical Storm Kajiki will move over water where the Sea Surface Temperature is near 30°C, it will have only a few hours to strengthen before the center reaches the coast.  Kajiki will bring some gusty winds to the coast, but the greater risk is for heavy rain.  Tropical Storm Kajiki will drop locally heavy rain over parts of central Vietnam and northern Laos.  Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Lingling was strengthening as it north toward the southern Ryukyu Islands.  At 5:00 p.m. EDT on Sunday the center of Tropical Storm Lingling was located at latitude 19.5°N and longitude 124.1°E which put it about 565 miles (915 km) south-southwest of Okinawa.  Lingling was moving toward the north-northwest at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 994 mb.  Tropical Storm Lingling is forecast to strengthen into a typhoon before it reaches the southern Ryukyu Islands.