Tag Archives: 22W

Tropical Storm Trami Makes Landfall in Vietnam

Tropical Storm Trami made landfall on the coast of Vietnam early on Sunday.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Trami was located at latitude 16.0°N and longitude 107.7°E which put the center about 35 miles (55 km) west-northwest of Da Nang, Vietnam.  Trami was moving toward the southwest at 8 m.p.h. (13 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 996 mb.

The center of Tropical Storm Trami made landfall on the coast of Vietnam near Da Nang early on Sunday.  Trami was a relatively small tropical storm at the time of landfall.  Winds to tropical storm force extended out 80 miles (130 km) from the center of Trami’s circulation.

Tropical Storm Trami will move around the southern side of a high pressure system over eastern China.  The high pressure system will steer Trami toward the southwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Trami will move inland over Southeast Asia.

Tropical Storm Trami will bring gusty winds and locally heavy rain to central Vietnam, southern Laos, northern Cambodia and northeastern Thailand.  Heavy rain is likely to cause floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Kong-rey started to strengthen southeast of Taiwan.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Kong-rey was located at latitude 16.3°N and longitude 131.6°E which put the center about 680 miles (1095 km) southeast of Taipei, Taiwan.  Kong-rey was moving toward the west at 13 m.p.h. (20 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 Trami Approaches Vietnam

Tropical Storm Trami approached the coast of Vietnam on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Trami was located at latitude 16.9°N and longitude 109.5°E which put the center about 165 miles (265 km) northeast of Da Nang, Vietnam.  Trami was moving toward the west at 10 m.p.h. (16 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 Trami was weakening as it approached the coast of Vietnam on Saturday.  Trami was moving under the southern part of an upper level ridge over eastern China.  The upper level ridge was producing easterly winds that were blowing toward the top of Trami’s circulation.  Those winds were causing moderate vertical wind shear and the wind shear was causing Tropical Storm Trami to weaken gradually.

The upper level winds were also causing the distribution of thunderstorms in Tropical Storm Trami to be asymmetrical.  Thunderstorms were occurring in bands in the western side of Trami’s circulation.  The bands in the eastern side of Tropical Storm Trami consisted primarily of showers and lower clouds.

Despite the moderate vertical wind shear, the distribution of wind speeds in Tropical Storm Trami was still fairly symmetrical.  Winds to tropical storm force extended out 150 miles (240 km) from the center of Trami’s circulation.

Tropical Storm Trami will move through an environment unfavorable for intensification.  Trami will move over water where the Sea Surface Temperatures are near 29°C.  However, the upper level ridge over eastern China will continue to cause moderate vertical wind shear.  The wind shear will prevent intensification of Tropical Storm Trami.  Trami is likely to continue to weaken gradually during the next 24 hours.

Tropical Storm Trami will move around the southern side of a high pressure system over eastern China.  The high pressure system will steer Trami toward the west-southwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Trami will make landfall on the coast of Vietnam north of Da Nang in about 24 hours.

Tropical Storm Trami will bring strong winds and heavy rain to central Vietnam.  Heavy rain is likely to cause floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Kong-rey was spinning southeast of Taiwan.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Kong-rey was located at latitude 16.7°N and longitude 134.0°E which put the center about 830 miles (1335 km) southeast of Taipei, Taiwan.  Kong-rey was moving toward the west at 14 m.p.h. (22 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 990 mb.

Tropical Storm Trami Moves Over South China Sea

Tropical Storm Trami moved over the South China Sea on Thursday.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Trami was located at latitude 17.0°N and longitude 118.3°E which put the center about 215 miles (350 km) northwest of Manila, Philippines.  Trami was moving toward the west at 6 m.p.h. (10 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 986 mb.

Tropical Storm Trami moved over the South China Sea on Thursday after dropping heavy rain on the Philippines that caused flash floods.  There were reports of damage and fatalities in Luzon.  The circulation around Trami began to strengthen when it moved over the South China Sea.  The inner end of a rainband wrapped around the center of Trami’s circulation.  Bands of thunderstorms were in the southern half of Tropical Storm Trami.  The bands in the northern side of Trami’s circulation consisted primarily of showers and lower clouds.  Storms near the center of Trami generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Trami was very large.  Winds to tropical storm force extended out 335 miles (535 km) from the center of Trami’s circulation.

Tropical Storm Trami will move through an environment favorable for intensification during the next 24 hours.  Trami will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southern part of an upper level ridge over the South China Sea.  The upper level ridge will produce easterly winds that will blow toward the top of Trami’s circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Trami is likely to intensify during the next 24 hours.  Trami could strengthen to a typhoon during the weekend.

Tropical Storm Trami will move around the south side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Trami toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Trami will toward Vietnam.

Tropical Storm Trami Brings Wind and Rain to Luzon

Tropical Storm Trami brought wind and rain to Luzon on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Trami was located at latitude 17.4°N and longitude 121.8°E which put the center about 25 miles (40 km) southeast of Tuguegarao, Philippines.  Trami was moving toward the northwest at 9 m.p.h. (15 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 988 mb.

Tropical Storm Trami brought wind and rain to Luzon on Wednesday.  Bands in the western side of Trami’s circulation dropped heavy rain on parts of Luzon.  There were reports of flooding in some places.

Thunderstorms were occurring in bands in the western side of Tropical Storm Trami.  Bands in the eastern side of Trami’s circulation consisted primarily of showers and lower clouds.  Storms near the center of Trami generated upper level divergence that pumped mass away to the west of the tropical storm.

The circulation around Tropical Storm Trami was large.  Winds to tropical storm force extended 165 miles (265 km) from the center of Trami’s circulation.

Tropical Storm Trami will move around the south side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Trami toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Trami will move across northern Luzon during the next 12 hours.

Tropical Storm Trami will continue to bring wind and rain to northern Luzon during the next 24 hours.  Heavy rain is likely to cause additional flooding.

Tropical Storm Trami will weaken a little as it moves across northern Luzon.  Trami will move over the South China Sea on Thursday.  Tropical Storm Trami is likely to strengthen again when it moves over the South China Sea.

Tropical Storm Trami Forms East of the Philippines

Tropical Storm Trami formed east of the Philippines on Monday night.  At 11:00 p.m. EDT on Monday the center of Tropical Storm Trami was located at latitude 13.8°N and longitude 127.0°E which put the center about 175 miles (280 km) east of Virac, Philippines.  Trami was moving toward the northwest 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 997 mb.

A low pressure system over the Western North Pacific Ocean east of the Philippines strengthened on Monday night and the Japan Meteorological Agency designated the system as Tropical Storm Trami.  The distribution of thunderstorms in Tropical Storm Trami was asymmetrical.  Thunderstorms were occurring in bands in the western side of Trami’s circulation.  Bands in the eastern side of Tropical Storm Trami consisted primarily of showers and lower clouds.  Storms near the center of Trami’s circulation began to generate upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Trami was large.  Winds to tropical storm force extended out 165 miles (265 km) from the center of Trami’s circulation.

Tropical Storm Trami will move through an environment somewhat favorable for intensification during the next 24 hours.  Trami will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southern part of an upper level ridge over the Western North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Trami’s circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Trami will intensify during the next 24 hours.

Tropical Storm Trami will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Trami toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Trami will approach northern Luzon in 36 hours.

Tropical Storm Trami will bring strong winds and heavy rain to parts of Luzon.  Heavy rain is likely to cause flash floods in some locations.

Tropical Storm Lionrock Drops Heavy Rain on Northern Vietnam

Tropical Storm Lionrock dropped heavy rain on parts of northern Vietnam on Saturday night. At 11:00 p.m. EDT on Saturday the center of Tropical Storm Lionrock was located at latitude 20.4°N and longitude 107.1°E which put it about 25 miles (40 km) southeast of Haiphong, Vietnam. Lionrock was moving toward the west-northwest at 15 m.p.h. (24 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 995 mb.

Tropical Storm Lionrock dropped heavy rain over the part of northern Vietnam between Hanoi and Haiphong on Saturday night. The heaviest rain was falling in bands in the western half of Tropical Storm Lionrock. Bands in the eastern side of Lionrock consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 120 miles (195 km) from the center of Lionrock’s circulation.

Tropical Storm Lionrock will move south of a high pressure system over China during the next 24 hours. The high pressure system will steer Lionrock toward the west during the next day or so. On its anticipated track Tropical Storm Lionrock will move across northern Vietnam and northern Laos. Lionrock will bring gusty winds and locally heavy rain to parts of northern Vietnam and northern Laos. Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Kompasu was spinning east of Luzon and Tropical Storm Namtheun formed east of the northern Marianas. At 11:00 p.m. EDT on Saturday the center of Tropical Storm Kompasu was located at latitude 15.9°N and longitude 129.8°E which put it about 470 miles (760 km) east of Luzon. Kompasu was moving toward the northwest at 9 m.p.h. (15 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 990 mb. Kompasu is forecast to move toward the west-northwest and to strengthen.

At 11:00 p.m. EDT on Saturday the center of Tropical Storm Namtheun was located at latitude 17.0°N and longitude 160.3°E which put it about 980 miles (1580 km) east of Alamagan. Namtheun was moving toward the west 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. Namtheun was forecast to move toward the northwest and to strengthen.

Tropical Storm Lionrock Drops Heavy Rain on Hainan

Tropical Storm Lionrock dropped heavy rain on Hainan on Friday. At 11:00 a.m. EDT on Friday the center of Tropical Storm Lionrock was located at latitude 19.1°N and longitude 110.2°E which put it about 50 miles (80 km) south of Haikou, China. Lionrock was moving toward the north at 7 m.p.h. (11 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 991 mb.

Tropical Storm Lionrock brought gusty winds and heavy rain to Hainan on Friday. The center of Lionrock was over Hainan. Bands of showers and thunderstorms on the northern and western sides of Tropical Storm Lionrock were dropping heavy rain over much of Hainan. Bands on the southern and eastern sides of Lionrock consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical storm. The circulation around Tropical Storm Lionrock was large. Winds to tropical storm force extended out 220 miles (350 km) from the center of circulation.

Tropical Storm Lionrock is likely to weaken during the next 12 hours while the center of circulation moves over Hainan. Lionrock will move into an environment favorable for intensification when the center moves over the Gulf of Tonkin. Lionrock will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the western side of a small upper level ridge. The ridge will produce southerly winds that will blow toward the top of Lionrock’s circulation. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Tropical Storm Lionrock is likely to intensify slowly after the center of circulation moves over the Gulf of Tonkin.

Tropical Storm Lionrock will move around the southwestern part of a subtropical high pressure system over the Western North Pacific Ocean during the next 12 hours. The subtropical high will steer Lionrock toward the northwest. On its anticipated track the center of Tropical Storm Lionrock will move across Hainan and it will emerge over the Gulf of Tonkin on Saturday. Lionrock will continue to bring gusty winds and locally heavy rain to Hainan during the next 12 hours. Heavy rain could cause flash floods in some locations. Tropical Storm Lionrock will move south of a second high pressure system that is centered over China during the weekend. The second high pressure system will steer Lionrock toward the west. Tropical Storm Lionrock could approach the coast of northern Vietnam in 36 hours.

Elsewhere over the Western North Pacific Ocean, a former tropical depression east of the Philippines strengthened to Tropical Storm Kompasu. At 11:00 a.m. EDT on Friday the center of Tropical Storm Kompasu was located at latitude 13.8°N and longitude 131.5°E which put it about 570 miles (920 km) east of Daet, Philippines. Kompasu was stationary. 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.

Tropical Storm Lionrock Forms Southeast of Hainan

Tropical Storm Lionrock formed over the South China Sea southeast of Hainan on Thursday. At 5:00 p.m. EDT on Thursday the center of Tropical Storm Lionrock was located at latitude 17.5°N and longitude 111.0°E which put it about 95 miles (150 km) southeast of Lingshui, China. Lionrock was moving toward the north-northwest 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 994 mb.

The circulation around a low pressure system over the South China Sea strengthened on Thursday and the Japan Meteorological Agency designated the system as Tropical Storm Lionrock. There was a broad center of circulation in the middle of Tropical Storm Lionrock. Many of the thunderstorms were occurring in bands northeast and southwest of the broad center. Storms in the bands generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 150 miles (240 km) on the eastern side of Lionrock. Winds to tropical storm force extended out 75 miles (120 km) on the western side of the circulation.

Tropical Storm Lionrock will move through an environment somewhat favorable for intensification during the next 24 hours. Lionrock will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the eastern side of a small upper level ridge. The ridge will produce northeasterly winds that will blow toward the top of Lionrock’s circulation. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Tropical Storm Lionrock is likely to intensify slowly during the next 24 hours because of the broad center of circulation.

Tropical Storm Lionrock will move around the southwestern part of a subtropical high pressure system over the Western North Pacific Ocean during the next 24 hours. The subtropical high will steer Lionrock toward the north-northwest. On its anticipated track the center of Tropical Storm Lionrock will reach Hainan in 24 hours. Lionrock will bring gusty winds and locally heavy rain to Hainan. Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, a tropical depression formed east of the Philippines. At 5:00 p.m. EDT on Thursday the center of the tropical depression was located at latitude 13.3°N and longitude 129.7°E which put it about 400 miles (645 km) east of Legazpi, Philippines. The tropical depression was moving toward the east-northeast at 7 m.p.h. (11 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 Atsani Passes Just South of Taiwan

Tropical Storm Atsani passed just south of Taiwan early on Friday. At 4:00 a.m. EST on Friday the center of Tropical Storm Atsani was located at latitude 21.5°N and longitude 120.7°E which put it about 30 miles (50 km) south of Taiwan. Atsani was moving toward the west-northwest at 12 m.p.h. (19 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 995 mb.

The center of Tropical Storm Atsani passed just to the south of the southern tip of Taiwan early on Friday. Radar images from the Taiwan Central Weather Bureau showed the well organized structure of Tropical Storm Atsani.

There was a small, tight center of circulation. The center was surrounded by a partial eyewall and the strongest winds were occurring in eyewall. Multiple bands of showers and thunderstorms were revolving around the core of Tropical Storm Atsani. Bands in the northern half of Atsani were dropping heavy rain over the southern half of Taiwan. The heaviest rain was falling in parts of southeastern Taiwan where the wind was pushing air up the eastern slopes of mountains. Flash floods are possible in those areas. Winds to tropical storm force extended out 100 miles (160 km) from the center of Atsani.

Tropical Storm Atsani will be in an environment favorable for intensification during the next 12 to 24 hours. Atsani will move over water where the Sea Surface Temperature is near 28°C. It will be in an area where the upper level winds are weaker and there will be little vertical wind shear. Tropical Storm Atsani could intensify during the next 24 hours and there is a chance it could strengthen into a typhoon. An upper level trough over eastern Asia will approach Atsani during the weekend. The trough will produce stronger southwesterly winds which will cause more vertical wind shear. Tropical Storm Atsani will weaken when the wind shear increases. If the shear is strong enough, the upper level winds could blow the top half of Atsani northeast of the low level circulation.

Tropical Storm Atsani will move south of a ridge of high pressure over the Western North Pacific Ocean. The high will steer Atsani toward the west during the next day or so. If the wind shear blows the top half of Tropical Storm Atsani northeast of the lower level circulation, then a surface high pressure system over eastern Asia could push the lower half of Atsani toward the southeast. On its anticipated track Tropical Storm Atsani will pass southeast of Hong Kong and it could eventually move toward Vietnam.

Elsewhere over the Western North Pacific Ocean, the remnants of former Typhoon Goni were dropping heavy rain over parts of Vietnam. At 4:00 a.m. EST on Friday the center of Tropical Depression Goni was located at latitude 13.8°N and longitude 108.3°E which put it about 50 miles (80 km) west of Quy Nhon, Vietnam. Goni was moving toward the west at 7 m.p.h. (11 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 1003 mb. Tropical Depression Goni is dropping heavy rain over ground that is already saturated and the rain will make ongoing floods worse.

Dangerous Typhoon Goni Hits Catanduanes

Extremely dangerous Typhoon Goni hit Catanduanes Island on Saturday. At 5:00 p.m. EDT on Saturday the center of Typhoon Goni was located at latitude 13.7°N and longitude 124.4°E which put it about 25 miles (40 km) northeast of Virac, Philippines. Goni was moving toward the west-southwest at 16 m.p.h. (26 km/h). The maximum sustained wind speed was 195 m.p.h. (315 km/h) and there were wind gusts to 235 m.p.h. (380 km/h). The minimum surface pressure was 884 mb.

The eye of Typhoon Goni moved over the southern part of Catanduanes Island on Saturday. Despite the development of concentric eyewalls and the occurrence of an eyewall replacement cycle, Goni actually strengthened on Saturday. The original inner eyewall weakened and the outer eyewall contracted around the center of Typhoon Goni. Goni exhibited an eye with a diameter of 14 miles (22 km) when it made landfall on Catanduanes Island.

The circulation around Typhoon Goni increased in size during the eyewall replacement cycle. Winds to typhoon force extended out 60 miles (95 km) from the center of Goni. Winds to tropical storm force extended out 130 miles (210 km) from the center of circulation. The Hurricane Intensity Index (HII) for Typhoon Goni was 48.0. The Hurricane Size Index (HSI) was 16.0 and the Hurricane Wind Intensity Size Index (HWISI) was 64.0. Typhoon Goni was capable of causing catastrophic damage on a regional scale.

Typhoon Goni will also generate a storm surge of up to 20 feet (6 meters) along the coasts of Catanduanes Island and southeastern Luzon. Typhoon Goni will move west across the Philippines. Goni will weaken as the core passes over land. The center of Goni will make landfall in southeastern Luzon near Tabaco. The southern eyewall of Goni will produce strong winds in Legaspi. The northern eyewall will bring strong winds to Naga. Typhoon Goni could be near Manila in 18 hours and it could still be the equivalent of a major hurricane at that time. Goni will also drop locally heavy rain over southern Luzon and flash floods are likely.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Atsani was organizing slowly east of the Philippines. At 5:00 p.m. EDT on Saturday the center of Tropical Storm Atsani was located at latitude 15.2°N and longitude 135.8°E which put it about 900 miles (1450 km) east of Luzon. Atsani was moving toward the west-northwest 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 1001 mb. Tropical Storm Atsani was forecast to move toward the west and to strengthen.