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Tropical Storm Linfa Makes Landfall in Vietnam

Tropical Storm Linfa made landfall on the coast of Vietnam on Sunday.  At 11:00 a.m. EDT on Sunday the center of Tropical Storm Linfa was located at latitude 15.4°N and longitude 107.4°E which put it about 50 miles (80 km) east of Lamam, Laos.  Linfa was moving toward the west at 6 m.p.h. (10 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 1000 mb.

The center of Tropical Storm Linfa made landfall on the central coast of Vietnam south of Da Nang on Sunday.  Linfa brought tropical storm force winds to the portion of the coast south of Da Nang.  Tropical Storm Linfa dropped heavy rain over central Vietnam, southern Laos and northeastern Cambodia.  Linfa is forecast to continue to move toward the west and it will be over northeastern Thailand on Monday.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Chan-hom weakened southeast of Japan and a new tropical depression formed west of the Philippines.  At 11:00 a.m. EDT on Sunday the center of Tropical Storm Chan-hom was located at latitude 31.1°N and longitude 142.2°E which put it about 300 miles (485 km) south-southeast of Tokyo, Japan.  Chan-hom was moving toward the southeast at 8 m.p.h. (13 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 1000 mb.

At 11:00 a.m. EDT on Sunday the center of Tropical Depression 18W was located at latitude 17.1°N and longitude 118.3°E which put it about 700 miles (1130 km) east of Da Nang, Vietnam.  The depression was moving toward the west at 10 m.p.h. (16 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 1002 mb.

Tropical Storm Linfa Forms East of Vietnam

Tropical Storm Linfa formed east of Vietnam on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Linfa was located at latitude 15.0°N and longitude 109.9°E which put it about 155 miles (250 km) east-southeast of Da Nang, Vietnam.  Linfa was moving toward the west at 21 m.p.h. (34 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 997 mb.

More thunderstorms developed near the center of a low pressure system over the South China Sea east of Vietnam and the Japan Meteorological Agency designated the system as Tropical Storm Linfa on Saturday.  The circulation around Tropical Storm Linfa exhbited better organization.  More thunderstorms formed near the center of circulation.  Bands of showers and thunderstorms were revolving around the center of Linfa.  Storms near the center generated upper level divergence which pumped mass away to the west of the tropical storm.  Winds to tropical storm force extended out 100 miles (160 km) from the center of Linfa.

A high pressure system over eastern Asia will steer Tropical Storm Linfa quickly toward the west during the next two days.  On its anticipated track Linfa will make landfall on the coast of Vietnam south of Da Nang in about 8 hours.  Tropical Storm Linfa will move through an environment favorable for intensification until it makes landfall.  Linfa will move over water where the Sea Surface Temperature is near 29°C.  It will move under the southern part of an upper level ridge.  The ridge will produce easterly winds which will blow toward the top of Tropical Storm Linfa.  Those winds will cause moderate vertical wind shear.  The shear will limit the rate of intensification but Linfa will strengthen before it makes landfall.

Tropical Storm Linfa will make landfall on the coast of Vietnam south of Da Nang in a few hours.  Linfa will bring gusty winds and locally heavy rain to parts of central Vietnam, southern Laos, northern Cambodia and northeastern Thailand.  Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Chan-hom was passing south of Japan.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Chan-hom was located at latitude 32.0°N and longitude 139.8°E which put it about 215 miles (345 km) south of Tokyo, Japan.  Chan-hom was moving toward the east at 15 m.p.h. (24 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 985 mb.

Tropical Storm Noul Brings Wind and Rain to Central Vietnam

Tropical Storm Noul brought wind and rain to central Vietnam on Thursday night.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Noul was located at latitude 16.7°N and longitude 107.2°E which put it about 45 miles (75 km) north-northwest of Da Nang, Vietnam.  Noul was moving toward the west at 22 m.p.h. (35 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.

The distribution of thunderstorms and rain around Tropical Storm Noul was asymmetrical.  The strongest thunderstorms and the heaviest rain were on the western side of Noul.  Tropical Storm Noul was moving under the southern part of a large upper level ridge over Asia and the Western North Pacific Ocean.  The ridge was producing strong easterly winds which were blowing toward the top of Noul.  Those winds were causing moderate vertical wind shear and they were also the cause of the asymmetrical distribution of rainfall.  Winds to tropical storm force extended out 150 miles (240 km) from the center of circulation.

The upper level ridge will steer Tropical Storm Noul quickly toward the west.  Noul will across central Vietnam and southern Laos on Friday.  Tropical Storm Noul will drop locally heavy rain over parts of central Vietnam, southern Laos and northeastern Thailand.  Flash floods could occur in some locations.

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.

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.

Tropical Storm Podul Drops Heavy Rain on Vietnam

Tropical Storm Podul dropped heavy rain on Vietnam on Thursday.  At 2:00 p.m. EDT on Thursday the center of Tropical Storm Podul was located at latitude 17.5°N and longitude 106.5°E which put it about 10 miles (15 km) northwest of Dong Hoi, Vietnam.  Podul was moving toward the west at 21 m.p.h. (34 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 994 mb.

Tropical Storm Podul made landfall near Dong Hoi, Vietnam on Thursday.  The structure of Podul was very asymmetrical.  Most of the thunderstorms were occurring in the western half of the circulation.  Tropical Storm Podul was moving south of an upper level ridge over eastern Asia.  The ridge was producing strong easterly winds which were blowing across the top of Podul.  Those winds were causing strong vertical wind shear and they were the reason why most of the thunderstorms were in the western half of the circulation.  As a result of the wind shear, heavy rain was already falling over Vietnam even before the center made landfall.

The upper level ridge was steering Tropical Storm Podul rapidly toward the west.  Podul will weaken quickly as it moves farther inland.  Even though Tropical Storm Podul will weaken quickly, heavy rain will fall over portions of Laos and northeastern Thailand on Friday.  Locally heavy rainfall could cause flash floods in parts of Vietnam, Laos and northeastern Thailand.

Tropical Storm Pabuk Brings Wind and Rain to Southern Thailand

Tropical Storm Pabuk brought wind and rain to southern Thailand on Friday.  At 5:00 p.m. EST on Friday the center of Tropical Storm Pabuk was located at latitude 8.7°N and longitude 98.5°E which put it about 60 miles (95 km) northeast of Phuket, Thailand.  Pabuk was moving toward the west-northwest at 10 m.p.h. (16 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 997 mb.

Tropical Storm Pabuk made landfall near Sichon in southern Thailand.  Pabuk brought gusty winds to much of the Isthmus of Kra.  It also dropped heavy rain over parts of southern Thailand.  Tropical Storm Pabuk weakened when it crossed the Isthmus of Kra, but the core of the circulation appears to have remained intact.  Pabuk is moving over the Andaman Sea and it still has a well defined low level center of circulation.  Several bands of showers and thunderstorms are revolving around the core of the tropical storm.  Additional bands of showers and thunderstorms are located in the northeastern part of the circulation which is over the Gulf of Thailand.

Tropical Storm Pabuk will move into an environment favorable for intensification during the next 24 to 36 hours.  Pabuk will move over water where the Sea Surface Temperature is near 28°C.  An upper level ridge over the Western North Pacific Ocean will produce southeasterly winds which will blow toward the top of the circulation.  Those winds will cause moderate vertical wind shear, which will inhibit intensification.  However, the wind shear may not be strong enough to prevent Tropical Storm Pabuk from strengthening.

Tropical Storm Pabuk will continue to move around the western end of the ridge over the Western North Pacific Ocean.  The ridge will steer Pabuk toward the west-northwest for another 24 to 36 hours.  Pabuk will turn more toward the north when it reaches the western end of the ridge.  On its anticipated track Tropical Storm Pabuk will reach the Andaman Islands in about 36 hours.

Elsewhere over the Western North Pacific Ocean, Tropical Depression 01W formed southeast of the Marshall Islands.  At 4:00 p.m. EST on Friday the center of Tropical Depression 01W was located at latitude 4.9°N and longitude 174.0°E which put it about 250 miles (400 km) southeast of Majuro, Marshall Islands.  It was moving toward the northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1004 mb.  Tropical Depression 01W is forecast to move toward the west-northwest and strengthen.  On its anticipated track it could move toward Majuro, Kwajalein, Ujelang, and the Marianas.

Tropical Storm Pabuk Nears Southern Thailand

Tropical Storm Pabuk neared southern Thailand late on Thursday.  At 10:00 p.m. EST on Thursday the center of Tropical Storm Pabuk was located at latitude 8.0°N and longitude 101.0°E which put it about 110 miles (170 km) southeast of Sichon, Thailand.  Pabuk was moving toward the west-northwest at 16 m.p.h. (26 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 988 mb.

Tropical Storm Pabuk exhibited more organization on Thursday.  A broken ring of showers and thunderstorms surrounded the center of circulation.  Stronger thunderstorms were occurring in the western part of the ring, while weaker storms and showers comprised the rest of the ring.  Several bands of thunderstorms were on the western side of Tropical Storm Pabuk.  Bands of showers and thunderstorms were also on the eastern side of the circulation.  Storms near the center of circulation were generating upper level divergence which was pumping mass away to the northwest of the tropical storm.  Winds to tropical storm force extended out about 100 miles (160 km) from the center.

Tropical Storm Pabuk will move through an environment favorable for intensification for the next six to twelve hours.  Pabuk will move over water where the Sea Surface Temperature is near 28°C.  It will move around the western end of a subtropical ridge over the Western North Pacific Ocean.  The ridge will produce southeasterly winds which will blow toward the top of the circulation.  Those winds will cause moderate vertical wind shear which will inhibit intensification.  Pabuk could intensify during the short term.  It will reach the coast of southern Thailand in less than 12 hours.  Tropical Storm Pabuk will weaken when it moves across the Isthmus of Kra.  Pabuk could strengthen again when it moves over the Andaman Sea in a day or so.

Tropical Storm Pabuk will move around the western end of the subtropical ridge, which will steer the tropical storm in a northwesterly direction.  On its anticipated track Tropical Storm Pabuk will make landfall on the coast of southern Thailand near Sichon in a few hours.  Pabuk will move across the Isthmus of Kra and into the Andaman Sea in a day or so.  Tropical Storm Pabuk could reach the Andaman Islands within 60 hours.

Tropical Storm Pabuk will bring gusty winds and heavy rain to southern Thailand.  Heavy rain could cause flash floods, especially in areas of steeper terrain.

Tropical Storm Pabuk Forms Over South China Sea

Tropical Storm Pabuk formed over the South China Sea near Pulau Laut on Tuesday.  At 10:00 p.m. EST on Tuesday the center of Tropical Storm Pabuk was located at latitude 5.9°N and longitude 108.2°E which put it about 675 miles (1090 km) east-southeast of Chumphon, Thailand.  Pabuk was moving toward the west at 6 m.p.h. (10 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 1000 mb.

More thunderstorms developed near the western side of the center of Tropical Depression 36W and the Japan Meteorological Agency designated the system as Tropical Storm Pabuk.  The distribution of thunderstorms around Tropical Storm Pabuk was asymmetrical.  Many of the stronger thunderstorms were occurring west of the center of circulation.  Pabuk was near the western end of a subtropical ridge over the Western North Pacific Ocean.  The ridge was producing southeasterly winds which were blowing toward the top of the circulation.  Those winds were causing moderate vertical wind shear and they were inhibiting upper level divergence to the west of Tropical Storm Pabuk.  The wind shear was also probably causing the asymmetrical distribution of thunderstorms.  Several bands of showers and thunderstorms were located on the northern periphery of Pabuk.

Tropical Storm Pabuk will move through an environment somewhat favorable for intensification.  Pabuk will move over water where the Sea Surface Temperature is near 28°C.  The upper level ridge over the Western North Pacific will continue to cause vertical wind shear, but the strength of the upper level winds could weaken slightly.  Wind shear will inhibit intensification, but Tropical Storm Pabuk is likely to strengthen during the next 24 to 48 hours.

The ridge over the Western North Pacific will steer Tropical Storm Pabuk toward the west-northwest during the next several days.  On its anticipated track Pabuk could approach southern Thailand in 48 to 60 hours.