Tag Archives: Sanya

Typhoon Bavi Intensifies to Equivalent of a Major Hurricane

Typhoon Bavi intensified to the equivalent of a major hurricane on Thursday night.  The threat posed by Bavi prompted the issuance of Typhoon Watches and Tropical Storm Watches for the Marianas.  At 5:00 a.m. EDT on Friday the center of Typhoon Bavi was located at latitude 12.9°N and longitude 153.8°E which put the center about 625 miles (1010 km) east of Guam.  Bavi was moving toward the west at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 150 m.p.h. (240 km/h).  The minimum surface pressure was 955 mb.

Typhoon Watches are in effect for Guam, Rota, Tinian, and Saipan.

Tropical Storm Watches are in effect for Alamagan, Pagan, and Agrihan.

A circular eye with a diameter of 21 miles (33 km) was at the center of Typhoon Bavi.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Bavi’s circulation.  Storms near the core of Bavi generated strong upper level divergence that pumped large quantities of mass away from typhoon.  The removal of large quantities of mass caused the surface pressure to decrease rapidly.

The circulation around Typhoon Bavi was fairly symmetrical.  Winds to typhoon force extended out 50 miles (80 km) from the center of Bavi’s circulation.  Winds to tropical storm force extended out 150 miles (240 km) from the center of Typhoon Bavi.

The Hurricane Intensity Index (HII) for Typhoon Bavi is 22.1.  The Hurricane Size Index (HSI) is 18.6 and the Hurricane Wind Intensity Size Index (HWISI) is 40.7.  Typhoon Bavi is similar in intensity to Hurricane Jeanne when Jeanne hit South Florida in 2004.  Bavi is not quite as large as Jeanne was.

Typhoon Bavi will more through an environment that will be very favorable for intensification during the next 24 hours.  Bavi will move over water where the Sea Surface Temperatures are near 29°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Typhoon Bavi will intensify during the next 24 hours.  Bavi could intensify rapidly at times.  Typhoon Bavi could strengthen to the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale during the next 24 hours.

Typhoon Bavi will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Bavi toward the west during the next 24 hours.  On its anticipated track, Typhoon Bavi could reach the Marianas in less than 60 hours.

Typhoon Bavi will bring strong winds and heavy rain to the Marianas.  Bavi could be capable of causing catastrophic damage.  Heavy rain will cause flash floods in some locations.

Flood Watches are in effect for Guam, Rota, Tinian, and Saipan.

Typhoon Bavi could cause a storm surge of up to 16 feet (5 meters) along the coast of the Marianas.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Maysak was bringing gusty winds and locally heavy rain to Hainan.  At 5:00 a.m. EDT on Friday the center of Tropical Storm Maysak was located at latitude 17.9°N and longitude 109.4°E which put the center about 25 miles (40 km) south of Sanya, China.  Maysak was moving toward the northwest 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 999 mb.

Bavi Strengthens to a Typhoon

Former Tropical Storm Bavi strengthened to a typhoon over the Western North Pacific Ocean east of the Marianas on Thursday.  At 5:00 p.m. EDT on Thursday the center of Typhoon Bavi was located at latitude 12.7°N and longitude 156.1°E which put the center about 790 miles (1275 km) east of Guam.  Bavi was moving toward the west-northwest at 14 m.p.h. (22 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 982 mb.

Former Tropical Storm Bavi strengthened to a typhoon on Thursday.  The inner end of a rainband wrapped around the center of Bavi’s circulation.  A circular eye formed at the center of Typhoon Bavi.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Bavi’s circulation.  Storms near the center of Bavi generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

The size of the circulation around Typhoon Bavi increased on Thursday as Bavi intensified.  Winds to typhoon force extended out 50 miles (80 km) from the center of Bavi’s circulation.  Winds to tropical storm force extended out 160 miles (260 km) from the center of Typhoon Bavi.

Typhoon Bavi will more through an environment that will be very favorable for intensification during the next 24 hours.  Bavi will move over water where the Sea Surface Temperatures are near 29°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Typhoon Bavi will intensify during the next 24 hours.  Bavi could intensify rapidly at times. Typhoon Bavi could strengthen to the equivalent of a major hurricane during the next 24 hours.

Typhoon Bavi will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Bavi toward the west-northwest during the next 24 hours.  On its anticipated track, Typhoon Bavi could reach the Marianas in less than 72 hours.

Typhoon Bavi will bring strong winds and heavy rain to the Marianas.  Bavi could be capable of causing catastrophic damage.  Heavy rain will cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, former Tropical Depression 10W strengthened to Tropical Storm Maysak southeast of Hainan.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Maysak was located at latitude 17.6°N and longitude 110.2°E which put the center about 50 miles (80 km) southeast of Sanya, China.  Maysak was moving toward the west at 7 m.p.h. (11 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 1002 mb.

Tropical Storm Bavi Intensifies

Tropical Storm Bavi was intensifying over the Western North Pacific Ocean east of the Marianas on Wednesday night.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Bavi was located at latitude 11.2°N and longitude 159.7°E which put the center about 1050 miles (1690 km) east of Guam.  Bavi was moving toward the west-northwest 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 996 mb.

Former Tropical Depression 09W intensified on Wednesday and the Japan Meteorological Agency designated the system as Tropical Storm Bavi.

The circulation around Tropical Storm Bavi exhibited much more organization on Wednesday evening.  The inner end of a rainband wrapped around the western side of the center of Bavi’s circulation.  Other bands of showers and thunderstorms were revolving around the center of Tropical Storm Bavi.  Storms near the center of Bavi generated more upper level divergence that pumped mass away from the tropical storm.  The removal of more mass caused the surface pressure to decrease.

The distribution of wind speeds in Tropical Storm Bavi became more symmetrical on Wednesday.  Winds to tropical storm force extended out 80 miles (130 km) from the center of Bavi’s circulation.

Tropical Storm Bavi will more through an environment that will be very favorable for intensification during the next 24 hours.  Bavi will move over water where the Sea Surface Temperatures are near 29°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Bavi is likely to intensify to a typhoon during the next 24 hours.  Bavi could intensify rapidly at times.  Tropical Storm Bavi is likely to strengthen to the equivalent of a major hurricane by the weekend.

Tropical Storm Bavi will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Bavi toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Bavi could reach the Marianas in less than four days.

Tropical Storm Bavi is likely to intensify to the equivalent of a major hurricane before it reaches the Marianas.

Elsewhere over the Western North Pacific Ocean, Tropical Depression 10W formed over the South China Sea.  At 11:00 p.m. EDT on Wednesday the center of Tropical Depression 10W was located at latitude 17.7°N and longitude 112.6°E which put the center about 250 miles (400 km) east-southeast of Sanya, China.  The tropical depression was moving toward the west at 21 m.p.h. (33 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 1003 mb.

Tropical Depression 10W is forecast to strengthen to a tropical storm before it reaches Hainan.  It will bring strong winds and locally heavy rain to Hainan.  Heavy rain could cause flash floods in some locations.

Typhoon Kajiki Brings Wind and Rain to Hainan

Typhoon Kajiki brought wind and rain to Hainan on Sunday.  At 5:00 a.m. EDT on Sunday the center of Typhoon Kajiki was located at latitude 17.5°N and longitude 109.8°E which put the center about 50 miles (80 km) south-southeast of Sanya, China.  Kajiki was moving toward the west at 11 m.p.h. (17 km/h).  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 967 mb.

Typhoon Kajiki rapidly intensified to the equivalent of a Category 2 hurricane on the Saffir-Simpson Scale during Saturday night.  A circular eye with a diameter of 25 miles (40 km) formed at the center of Kajiki’s circulation.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Typhoon Kajiki.  Storms near the center of Kajiki generated strong upper level divergence that pumped large quantities of mass away from the typhoon.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

The circulation around Typhoon Kajiki became more symmetrical when it rapidly intensified.  Winds to typhoon force extended out 30 miles (50 km) from the center of Kajiki’s circulation.  Winds to tropical storm force extended out 115 miles (185 km) from the center of Typhoon Kajiki.

The Hurricane Intensity Index (HII) for Typhoon Kajiki is 17.8.  The Hurricane Size Index (HSI) is 11.3 and the Hurricane Wind Intensity Size Index (HWISI) is 29.1.  Typhoon Kajiki is similar in size and intensity to Hurricane Sally when Sally hit South Alabama in 2020.

Typhoon Kajiki will move through an environment that is favorable for intensification during the next 24 hours.  Kajiki will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over China.  The upper level ridge will produce northeasterly winds that will blow toward the top of Kajiki’s circulation.  The winds in the lower levels of the atmosphere will also blow from the northeast.  So, there will be little vertical wind shear.  Typhoon Kajiki will intensify during the next 24 hours as long as the center remains south of Hainan.  Kajiki could strengthen to the equivalent of a major hurricane.

Typhoom Kajiki will move around the southern side of a high pressure system over China.  The high pressure system will steer Kajiki toward the west during the next 24 hours.  On its anticipated track, the center of Typhoon Kajiki will continue to pass south of Hainan during the next 12 hours.  Kajiki will hit the coast of  northern Vietnam in 24 hours.

Typhoon Kajiki will continue bring strong winds and heavy rain to Hainan during the next 12 hours.  Heavy rain is likely to cause flash floods in some locations.

Typhoon Kajiki will also bring strong winds and heavy rain to northern Vietnam.  Heavy rain is likely to cause flash floods there as well.  Typhoon Kajiki could cause a storm surge of up to 10 feet (3 meters) along the coast of northern Vietnam.

Tropical Depression Forms South of Hainan Island

A tropical depression formed just to the south of Hainan Island on Friday night. At 11:00 p.m. EDT on Friday the center of Tropical Depression 05W was located at latitude 18.3°N and longitude 109.5°E which put it about 35 miles (55 km) south of Sanya, China. The depression was moving toward the west at 16 m.p.h. (26 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.

Thunderstorms developed closer to the center of a low pressure system south of Hainan Island on Friday night and both the Japan Meteorological Agency and the Joint Typhoon Warning Center designated the system as a tropical depression. The distribution of thunderstorms around Tropical Depression 05W was asymmetrical. The strongest thunderstorms were occurring in bands southwest of the center of the tropical depression. Bands in the other parts of the circulation consisted primarily of showers and lower clouds. An upper level ridge centered over southern China was producing moderate northeasterly winds that were blowing toward the top of the depression. Those winds were causing moderate vertical wind shear and they were also causing the asymmetrical distribution of thunderstorms.

The center of Tropical Depression 05W will move near Hainan Island during the next few hours. The northern half of the circulation around the tropical depression will be over Hainan Island, which will inhibit intensification. Tropical Depression 05W will move into an environment favorable for intensification when it moves west of Hainan Island. The tropical depression will move over an area where the Sea Surface Temperatures are near 30°C. The upper level ridge over southern China will continue to produce moderate vertical wind shear. Even with the moderate wind shear, Tropical Depression 05W is likely to intensify to a tropical storm during the next 24 hours.

Tropical Depression 05W will move around the southern part of a subtropical high pressure system over the Western North Pacific Ocean during the next 36 hours. The high pressure system will steer the tropical depression toward the west-northwest. On its anticipated track the center of Tropical Depression 05W will pass near the southern part of Hainan Island. Since the strongest thunderstorms are in the southwestern part of the circulation, the tropical depression will cause mainly gustier winds over Hainan Island. Tropical Depression 05W could approach northern Vietnam in 24 hours. It could bring gusty winds and locally heavy rain to parts of northern Vietnam. Heavy rain could cause flash floods in some locations.