Tag Archives: 06W

Tropical Storm Champi Develops West of the Marianas

Tropical Storm Champi developed west of the Marianas on Tuesday night. At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Champi was located at latitude 15.3°N and longitude 139.9°E which put it about 320 miles (515 km) west-northwest of Guam. Champi was moving toward the west-northwest at 9 m.p.h. (15 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 circulation around former Tropical Depression 06W strengthened on Tuesday night and the Japan Meteorological Agency designated the system as Tropical Storm Champi. More thunderstorms formed near the center of Tropical Storm Champi. The inner end of a rainband wrapped around the eastern and northern sides of the center of Champi. Other bands of showers and thunderstorms were revolving around the center of circulation. Storms near the center generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 50 miles (80 km) from the center of circulation.

Tropical Storm Champi will move through an environment favorable for intensification during the next 48 hours. Champi will move over an area where the Sea Surface Temperatures are near 29°C. It will move between an upper level low northeast of the Marianas and and upper level ridge over eastern Asia. The upper level winds are weak between the upper low and the ridge and there will be little vertical wind shear. Tropical Storm Champi will intensify during the next 48 hours and it could strengthen to a typhoon.

Tropical Storm Champi will move around the western end of a subtropical high pressure system over the Western North Pacific Ocean during the next 48 hours. The high will steer Champi toward the north during the next several days. On its anticipated track Tropical Storm Champi could be southwest of Iwo To in 48 hours.

Tropical Depression Forms Southeast of Guam, Warning Issued

Tropical Depression 06W formed southeast of Guam on Sunday night and a Tropical Storm Warning was issued for Guam. At 5:00 a.m. EDT on Monday the center of Tropical Depression 06W was located at latitude 12.1°N and longitude 146.0°E which put it about 160 miles (260 km) southeast of Guam. Tropical Depression 06W was moving toward the west-northwest at 13 m.p.h. (20 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 1000 mb.

A Tropical Storm Warning was issued for Guam. A Tropical Storm Watch was issued for Rota.

A circulation center developed in a cluster of thunderstorms southeast of Guam on Sunday night and the Joint Typhoon Warning Center designated the system as Tropical Depression 06W. The distribution of thunderstorms around Tropical Depression 06W was asymmetrical. The strongest thunderstorms were occurring in bands on the eastern side of the tropical depression. Bands in the western half of the circulation consisted primarily of showers and lower clouds. Storms near the center of Tropical Depression 06W began to generate upper level divergence that pumped mass away from the tropical depression.

Tropical Depression 06W will move through an environment that is somewhat favorable for intensification during the next several days. The depression will move over an area where the Sea Surface Temperatures are near 29°C. It will move south of an upper level ridge over the Western North Pacific Ocean. The ridge will produce easterly winds that will blow toward the top of Tropical Depression 06W. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. The tropical depression will move into an area where drier air is sinking toward the surface. The drier air will limit the formation of thunderstorms on the western side of the circulation and it will inhibit intensification. Tropical Depression 06W is forecast to intensify to a tropical storm during the next 24 hours.

Tropical Depression 06W will move around the western side of a subtropical high pressure system over the Western North Pacific Ocean. The high will steer the depression toward the northwest during the next 24 hours. On its anticipated track Tropical Depression 06W will pass near Guam in 12 hours. The tropical depression will bring gusty winds and heavy rain to parts of Guam. It will move more toward the north when it reaches the western end of the high pressure system.

Tropical Storm Erick Forms Over Eastern North Pacific

Tropical Storm Erick formed over the Eastern North Pacific Ocean on Saturday.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Erick was located at latitude 11.9°N and longitude 126.8°W which put it about 1955 miles (3145 km) east-southeast of Hilo, Hawaii.  Erick was moving toward the west at 17 m.p.h. (28 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 1005 mb.

More thunderstorms developed near the center of a low pressure system over the Eastern North Pacific Ocean and the National Hurricane Center designated the system as Tropical Storm Erick.  The circulation around Erick was still organizing.  A small cluster of thunderstorms formed near the center of circulation and the strongest winds were occurring in that cluster.  Winds to tropical storm force extended out about 25 miles (40 km) from the center of circulation.  Bands of showers and thunderstorms were developing and the bands were beginning to revolve around the center of Tropical Storm Erick.  Storms near the center of circulation were starting to generate upper level divergence which was pumping mass away from the tropical storm.

Tropical Storm Erick will move through an environment favorable for intensification during the next 48 to 72 hours.  Erick will move over water where the Sea Surface Temperature is near 27.5°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Erick will strengthen and it could become a hurricane within 48 hours.  Erick could intensify more rapidly if an eye and eyewall form.

Tropical Storm Erick will move south of a subtropical high pressure system over the Eastern North Pacific Ocean.  The subtropical high will steer Erick toward the west-northwest during the next few days.  On its anticipated track Tropical Storm Erick could be southeast of Hawaii in four or five days.

Tropical Storm Danas Speeds Toward South Korea

Tropical Storm Danas sped toward South Korea on Friday as it moved quickly north-northeast over the East China Sea.  At 11:00 a.m. EDT on Friday the center of Tropical Storm Danas was located at latitude 32.3°N and longitude 125.1°E which put it about 190 miles (305 km) south-southwest of Mopko, South Korea.  Danas was moving toward the north-northeast at 19 m.p.h. (30 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 987 mb.

The distribution of thunderstorms around Tropical Storm Danas remained asymmetrical on Friday.  The strongest thunderstorms were occurring in bands well to the east of the center of circulation.  Bands closer to the center and on the western side of the circulation consisted primarily of showers and lower clouds.  An upper level trough over eastern China was producing southwesterly winds which were blowing toward the top of the circulation.  Those winds were causing moderate vertical wind shear and they were the reason for the asymmetrical distribution of thunderstorms.  The wind field also exhibited the effects of the wind shear.  Winds to tropical storm force extended out about 200 miles (320 km) from the center of Danas on the eastern side of the circulation, but only extended out about 120 miles (195 km) on the western side of the tropical storm.

Tropical Storm Danas will remain in an environment only marginally favorable for intensification until it makes landfall in South Korea.  Danas will move over water where the Sea Surface Temperature is near 30°C.  The upper level trough over eastern China will continue to cause moderate vertical wind shear.  Tropical Storm Danas could intensify a little during the next 12 hours, but it will weaken after the center moves over South Korea.

Tropical Storm Danas will move around the western end of a subtropical ridge over the western North Pacific Ocean.  The ridge and the upper level trough will interact to steer Danas rapidly toward the north-northeast.  On its anticipated track the center of Tropical Storm Danas will make landfall on the southwestern coast of South Korea in about 12 hours.  Danas will bring gusty winds and locally heavy rain to South Korea on Saturday.  The heaviest rain will fall over the southeastern half of South Korea.  Locally heavy rain in that region could cause flash floods.  The outer rainbands of Tropical Storm Danas could also drop locally heavy rain over western Kyushu.

Tropical Storm Danas Nears Southern Ryukyu Islands

Tropical Storm Danas moved near the southern Ryukyu Islands late on Wednesday.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Danas was located at latitude 23.9°N and longitude 124.1°E which put it about 30 miles (50 km) south of Ishigaki, Japan.  Danas was moving toward the north 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 990 mb.

The circulation around Tropical Storm Danas exhibited a little more organization on Wednesday.  More thunderstorms formed near the center of circulation and several bands of showers and thunderstorms formed in the eastern half of the circulation.  The bands north and west of the center consisted primarily of showers and lower clouds.  Storms near the center began to generate upper level divergence which pumped mass away to the northeast of the tropical storm.  Winds to tropical storm force extended out about 125 miles (200 km) from the center of circulation.

Tropical Storm Danas will move into an environment somewhat favorable for intensification.  Danas will move over water where the Sea Surface Temperature is near 30°C.  A small upper level low near Taiwan will produce southwesterly winds which blow toward the top of the circulation around Tropical Storm Danas.  Those winds were the reason why the stronger rainbands were in the eastern half of the circulation.  Those winds will cause moderate vertical wind shear, which will inhibit intensification.  However, the shear will have less of an effect since Danas will move in the same direction as the upper level winds.  Tropical Storm Danas is likely to intensify during the next 24 hours and there is a chance it could strengthen into a typhoon.

Tropical Storm Danas will move around the western end of a subtropical ridge over the western North Pacific Ocean.  The ridge will steer Danas toward the north-northeast.  On its anticipated track Tropical Storm Danas will move through the southern Ryukyu Islands during the next few hours.  Danas will bring gusty winds and locally heavy rain when it passes over those islands.  Tropical Storm Danas will move over the East China Sea toward southwestern Japan and South Korea during the next several days.

Tropical Storm Danas Forms East of Luzon

Tropical Storm Danas formed east of Luzon on Tuesday.  A distinct low level center of circulation developed in an area of low pressure east of Luzon and the Japan Meteorological Agency designated the system as Tropical Storm Danas.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Danas was located at latitude 17.5°N and longitude 123.1°E which put it about 80 miles (130 km) east of Tuguegarao, Philippines.  Danas was moving toward the west at 4 m.p.h. (6 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 994 mb.

The distribution of thunderstorms around Tropical Storm Danas was highly asymmetrical.  There were a few thunderstorms just to the southwest of the center of circulation, but most of the thunderstorms were occurring in a band on the far western edge of the circulation around Danas.  Bands in other parts of the circulation consisted primarily of showers and lower clouds.  Tropical Storm Danas was moving around the southeastern portion of an upper level ridge over east Asia.  The ridge was producing strong easterly winds which were blowing across the top of the circulation around Danas.  The easterly winds were causing strong vertical wind shear and the wind shear was causing the asymmetric distribution of thunderstorms.  The circulation around Tropical Storm Danas was large.  Winds to tropical storm force extended out about 200 miles (320 km) from the center of circulation.

Tropical Storm Danas will move into an environment that is only marginally favorable for intensification.  Danas will move over water where the Sea Surface Temperature is near 31°C.  So, there is plenty of energy in the upper ocean.  The strong upper level easterly winds are expected to weaken somewhat during the next several days.  If those winds weaken, then there will be less vertical wind shear and Tropical Storm Danas could strengthen.  If the upper level winds remain strong, then Danas will not strengthen and it could weaken to a tropical depression.  The forecast is for very slow intensification during the next 24 to 48 hours.

Since there are not a lot of taller thunderstorms near the center of Tropical Storm Danas, it will be steered by the winds in the lower troposphere.  Danas will move around the western end of a subtropical ridge over the Western North Pacific Ocean.  The ridge will turn Danas toward the north on Wednesday.  On its anticipated track the center of Tropical Storm Danas will remain east of Luzon.  The center of Danas could be near southeastern Taiwan in 24 to 36 hours.  Tropical Storm Danas could be near the east coast of China in about three days.  The primary risks will be locally heavy rain and flash floods.

Maliksi Strengthens Into a Typhoon East of Okinawa

Former Tropical Storm Maliksi strengthened into a typhoon east of Okinawa near Minami Daito Jima late on Saturday.  At 11:00 p.m. EDT on Saturday the center of Typhoon Maliksi was located at latitude 25.7°N and longitude 131.7°E which put it about 210 miles (335 km) east of Okinawa.  Maliksi was moving toward the northeast at 24 m.p.h. (39 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 970 mb.

The circulation of Typhoon Maliksi became more organized on Saturday.  An inner rainband wrapped around the center of circulation and an eye was apparent on satellite images.  There were intermittent breaks in the rings of thunderstorms around the eye.  Several bands of showers and thunderstorms in the eastern half of the circulation were revolving around the core of the typhoon.  Bands west of the center consisted primarily of showers and low clouds.  Storms near the core of Maliksi were generating upper level divergence which was pumping mass away to the northeast of the typhoon.  The circulation of Typhoon Maliksi was large and winds to tropical storm force extended out about 250 miles (400 km) from the center of circulation.

Typhoon Maliksi will move through an environment favorable for intensification during the next 12 to 24 hours.  Maliksi will move over water where the Sea Surface Temperature is near 30°C.  An upper level trough to the west of Maliksi will produce southwesterly winds which will blow toward the top of the circulation.  Those winds will produce some vertical wind shear, but the shear will not be strong enough to prevent intensification on Sunday.  The shear will increase after 18 to 24 hours and that will likely cause Maliksi to start to weaken.

The upper level trough is steering Maliksi toward the northeast and that general motion is expected to continue for another two or three days.  Typhoon Maliksi will speed past Minami Daito Jima during the next few hours.  On its anticipated track Maliksi will reach some of the islands south of Honshu in about 24 hours.  Typhoon Maliksi will produce gusty winds and locally heavy rain.

Tropical Storm Maliksi Forms East of Luzon, Ewiniar Brings Rain to South China.

Tropical Storm Maliksi formed east of Luzon on Thursday while Tropical Storm Ewiniar brought rain to parts of South China.  At 8:00 p.m. EDT on Thursday the center of Tropical Storm Maliksi was located at latitude 17.4°N and longitude 127.7°E which put it about 330 miles (535 km) east of Luzon.  Maliksi was moving toward the north at 4 m.p.h. (6 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 Japan Meteorological Agency designated an area of low pressure east of Luzon as Tropical Storm Maliksi late on Thursday.  There was a large counterclockwise circulation east of Luzon, but there were few thunderstorms near the center of the circulation.  Most of the thunderstorms were occurring in three bands in the outer portions of the circulation.  One band was located well to the west of the center of circulation, a second band was located well to the north of the center and the third band was located well to the east of the center.  The winds to tropical storm force were occurring in those bands.

Tropical Storm Maliksi will move through an environment favorable for intensification during the next 24 to 48 hours.  Maliksi will move over water where the Sea Surface Temperature is near 30°C.  Maliksi will move underneath an upper level ridge where the winds are weak and there will be little vertical wind shear.  The large circulation will be the primary factor inhibiting intensification in the short term.  Maliksi will intensify slowly until thunderstorms develop near the center of circulation and the strongest winds occur closer to the center.

Tropical Storm Maliksi will move around the western end of a subtropical ridge.  The ridge will steer Maliksi slowly toward the north.  When Tropical Storm Maliksi moves farther to the north westerly winds will begin to steer it toward the northeast.  On its anticipated track Tropical Storm Maliksi will remain east of Luzon.  The circulation of Maliksi is so large that rainbands on the western side of the circulation could affect the northern Philippines.

Elsewhere over the western North Pacific Ocean, Tropical Storm Ewiniar brought heavy rain to parts of South China.  Ewiniar made landfall on the coast of China near Yangjiang on Thursday.  At 8:00 p.m. EDT on Thursday the center of Tropical Storm Ewiniar was located at latitude 22.6°N and longitude 112.1°E which put it about 50 miles (80 km) northeast of Yangjiang, China.  Ewiniar was moving toward the north at 9 m.p.h. (15 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.

The center of Tropical Storm Ewiniar was moving farther inland over South China.  The winds to tropical storm force were occurring in rainbands that were still over the South China Sea.  Ewiniar was dropping heavy rain over parts of western Guangdong province and over southern Zizhiqu province.  The heavy rain could cause flooding in those areas.

Tropical Storm Talas Makes Landfall in Vietnam

Tropical Storm Talas made landfall on the coast of Vietnam on Sunday.  Talas was bringing gusty winds and heavy rainfall to parts of Vietnam, Laos and Thailand.  At 5:00 p.m. EDT on Sunday the center of Tropical Storm Talas was located at latitude18.6°N and longitude 105.5°E which put the center near Vinh, Vietnam.  Talas was moving toward the west at 17 m.p.h. (27 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 984 mb.

Tropical Storm Talas strengthened before it made landfall in Vietnam.  A primary band wrapped around the western and southern sides of the center of circulation.  Thunderstorms formed near the center of Talas as the tropical storm approached the coast of Vietnam.  The strongest winds in Tropical Storm Talas were occurring in thunderstorms over the South China Sea.  Tropical Storm Talas will weaken as it moves farther inland.

Tropical Storm Talas was bringing gusty winds and heavy rain to parts of Vietnam, Laos and Thailand.  Locally heavy rain could cause flooding, which will be the greatest risk as Tropical Storm Talas moves farther inland.

Tropical Storm Talas Forms East of Vietnam

Tropical Storm Talas formed east of Vietnam on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Talas was located at latitude 17.3°N and longitude 110.1°E which put it about 170 miles (270 km) east-northeast of Da Nang, Vietnam.  Talas was moving toward the west at 11 m.p.h. (17 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.

A large area of showers and thunderstorms persisted over the South China Sea for the past several days.  A distinct center of circulation began to develop in the northern part of the area of thunderstorms.  The Japan Meteorological Agency classified the system as Tropical Storm Talas on Saturday.

The circulation of Tropical Storm Talas is still organizing.  The center of rotation was near the northwestern edge of the area of thunderstorms.  Additional thunderstorms were beginning to form near the center of circulation.  Several bands of showers and thunderstorms were southwest of the center.  Bands of lighter showers were occurring in the remainder of Tropical Storm Talas.  Thunderstorms forming near the center of circulation were beginning to generate strong upper level divergence which was pumping out mass.

Tropical Storm Talas has about 24 hours to strengthen.  Talas will move over water where the Sea Surface Temperature is near 30°C.  An upper level ridge north of Talas is producing easterly winds which are blowing toward the top of the tropical storm.  There is some vertical wind shear, but the shear appears to have diminished during the past few hours.  Since Tropical Storm Talas will be moving through an environment of very warm water and reduced vertical wind shear, it will likely strengthen during the next 24 hours.

A subtropical ridge north of Talas is steering the tropical storm toward the west and motion a little to the north of due west is forecast.  On its anticipated track the center of Tropical Storm Talas will pass south of Hainan Island.  Tropical Storm Talas will approach the coast of Vietnam near Vinh in about 24 hours.  Tropical Storm Talas will bring gusty winds and locally heavy rain to Central Vietnam when it makes landfall.