Category Archives: South Pacific

Tropical Cyclone Seru Weakens Southeast of Vanuatu

Tropical Cyclone Seru weakened as it moved southeast of Vanuatu on Wednesday.  At 10:00 a.m. EST on Wednesday the center of Tropical Cyclone Seru was located at latitude 21.1°S and longitude 170.7°E which put the center about 260 miles (420 km) south-southeast of Port Vila, Vanuatu.  Seru was moving toward the south at 7 m.p.h. (11 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 994 mb.

Tropical Cyclone Seru weakened as it moved southeast of Vanuatu on Wednesday.  An upper level trough south of New Caledonia produced northwesterly winds that blew to toward the top of Seru’s circulation.  Those winds caused moderate vertical wind shear.  The wind shear caused the distribution of thunderstorms in Tropical Cyclone Seru to become asymmetrical.  Thunderstorms were occurring in bands in the eastern and southern parts of Seru’s circulation.  Bands in the northern and western parts of Tropical Cyclone Seru consisted primarily of showers and lower clouds.

The size of the circulation around Tropical Cyclone Seru increased as Seru moved farther south.  Winds to tropical storm force extended out 145 miles (235 km) from the center of Seru’s circulation.

Tropical Cyclone Seru will move through an environment that will be unfavorable for intensification during the next 24 hours.  Seru will move over water where where the Sea Surface Temperatures are near 26°C.  The upper level trough south of New Caledonia will continue to cause moderate to strong vertical wind shear over Tropical Cyclone Seru.  The combination of cooler water and moderate to strong vertical wind shear will cause Seru to weaken during the next 24 hours.

The upper level trough south of New Caledonia will steer Tropical Cyclone Seru toward the southeast during the next 24 hours.  On its anticipated track, Tropical Cyclone Seru will move farther away from Vanuatu.

Tropical Cyclone Alfred Meanders over the Coral Sea

Tropical Cyclone Alfred meandered over the Coral Sea on Tuesday.  At 10:00 p.m. EST on Tuesday the center of Tropical Cyclone Alfred was located at latitude 15.0°S and longitude 155.0°E which put the center about 850 miles (1370 km) north of Brisbane, Australia.  Alfred was moving toward the south at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 105 m.p.h. (165 km/h).  The minimum surface pressure was 975 mb.

Tropical Cyclone Alfred continued to intensify gradually on Tuesday.  The inner end of a rainband wrapped around the center of Alfred’s circulation.  An eye appeared to be forming at the center of Tropical Cyclone Alfred.  A ring of thunderstorms surrounded the developing eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Alfred’s circulation.  Storms near the core of Alfred generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Cyclone Alfred was small. Winds to hurricane/typhoon force extended out 15 miles (25 km) in the southern side of Alfred’s circulation.  Winds to tropical storm force extended out 80 miles (130 km) from the center of Tropical Cyclone Alfred.

Tropical Cyclone Alfred will move through an environment favorable for intensification during the next 24 hours.  Alfred will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the Coral Sea.  The winds are weak near the middle of the upper level ridge and there will be little vertical wind shear.   Tropical Cyclone Alfred is likely to intensify during the next 24 hours.

Tropical Cyclone Alfred will move around the western side of a high pressure system that is over Vanuatu.  The high pressure system will steer Alfred slowly toward the south during the next 24 hours.  On its anticipated track, Tropical Cyclone Alfred will move parallel to the east coast of Australia.  Alfred could move closer to the coast of Queensland by the weekend.

Tropical Cyclone Seru Strengthens to Equivalent of Hurricane/Typhoon

Tropical Cyclone Seru strengthened to the equivalent of a hurricane/typhoon over the South Pacific Ocean between Vanuatu and Fiji on Tuesday.  At 10:00 a.m. EST on Tuesday the center of Tropical Cyclone Seru was located at latitude 18.2°S and longitude 171.3°E which put the center about 190 miles (310 km) east of Port Vila, Vanuatu.  Seru was moving toward the south-southeast at 9 m.p.h. (15 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 985 mb.

Tropical Cyclone Seru rapidly intensified to the equivalent of a hurricane/typhoon over the South Pacific Ocean between Vanuatu and Fiji on Tuesday.  The inner end of a rainband wrapped around the eastern and southern sides of the center of Seru’s circulation.  Other bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Seru.  Storms near the center of Seru generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The inner core of Tropical Cyclone Seru was exhibiting more organization.  Winds to hurricane/typhoon force extended out 20 miles (30 km) from the center of Seru’s circulation.  Winds to tropical storm force extended out 160 miles (260 km) from the center of Tropical Cyclone Seru.

Tropical Cyclone Seru will move through an environment favorable for intensification during the next 24 hours.  Seru will move over water where where the Sea Surface Temperatures are near 28°C.  It will move under the axis of an upper level ridge that extends from Vanuatu to Fiji.  The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear.  Tropical Cyclone Seru will intensify during the next 24 hours.

Tropical Cyclone Seru will move around the southwestern part of a high pressure system over the South Pacific Ocean.  The high pressure system will steer Seru toward the south-southeast during the next 24 hours.  On its anticipated track, Tropical Cyclone Seru will remain between Vanuatu and Fiji.

Elsewhere over the South Pacific Ocean, Tropical Cyclone Rae was weakening rapidly as it passed southwest of Tonga.  At 4:00 a.m. EST on Tuesday the center of Tropical Cyclone Rae was located at latitude 24.1°S and longitude 178.0°W which put the center about 310 miles (500 km) southwest of Nuku Alofa, Tonga.  Rae was moving toward the south-southeast at 13 m.p.h. (21 km/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 988 mb.

Tropical Cyclone Alfred Spins over the Coral Sea

Tropical Cyclone Alfred continued to spin over the Coral Sea on Monday.  At 10:00 p.m. EST on Monday the center of Tropical Cyclone Alfred was located at latitude 14.6°S and longitude 154.5°E which put the center about 670 miles (1085 km) north of Brisbane, Australia.  Alfred was moving toward the south at 4 m.p.h. (6 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 984 mb.

Tropical Cyclone Alfred strengthened to the equivalent of a hurricane/typhoon as it spun over the Coral Sea on Monday.  The inner end of a rainband wrapped around the center of Alfred’s circulation.  A small circular eye was evident at the center of Tropical Cyclone Alfred on visible satellite images.  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 Tropical Cyclone Alfred.  Storms near the center of Alfred generated upper level divergence that pumped mass away from the tropical cyclone.

The circulation around Tropical Cyclone Alfred was small.  Winds to hurricane/typhoon force extended out 15 miles (25 km) in the southern side of Alfred’s circulation.  Winds to tropical storm force extended out 60 miles (95 km) from the center of Tropical Cyclone Alfred.

Tropical Cyclone Alfred will move through an environment favorable for intensification during the next 24 hours.  Alfred will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge over the Coral Sea.  The upper level ridge will produce northeasterly winds that will blow toward the top of Alfred’s circulation.  Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification.  Tropical Cyclone Alfred is likely to intensify during the next 24 hours.

Tropical Cyclone Alfred will move around the western side of a high pressure system that is over Vanuatu.  The high pressure system will steer Alfred slowly toward the south during the next 24 hours.  On its anticipated track, Tropical Cyclone Alfred will move parallel to the east coast of Australia.  Alfred could move closer to the coast of Queensland by the end of the week.

Tropical Cyclone Rae Moves Away From Fiji

Tropical Cyclone Rae moved away from Fiji on Monday.  At 4:00 p.m. EST on Monday the center of Tropical Cyclone Rae was located at latitude 22.1°S and longitude 178.2°W which put the center about 235 miles (385 km) west-southwest of Nuku Alofa, Tonga.  Rae was moving toward the south-southeast at 16 m.p.h. (26 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 961 mb.

Tropical Cyclone Rae moved south of Fiji on Monday.  There were reports of wind damage and floods from some of the islands in eastern Fiji.  Rae was passing west of Tonga on Monday.

Tropical Cyclone Rae intensified to the equivalent of a hurricane/typhoon as it moved across eastern Fiji.  The inner end of a rainband wrapped around the center of Rae’s circulation.  A circular eye formed at the center of Tropical Cyclone Rae.  There was a ring of thunderstorms around the eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Rae’s circulation.  Storms near the center of Rae generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The size of the circulation around Tropical Cyclone Rae increased a little on Monday.  Winds to hurricane/typhoon force extended out 40 miles (65 km) from the center of Rae’s circulation.  Winds to tropical storm force extended out 145 miles (235 km) from the center of Tropical Cyclone Rae.

Tropical Cyclone Rae will move through an environment that will become unfavorable for intensification during the next 24 hours.  Rae will move over water where where the Sea Surface Temperatures are near 26°C.  It will move under the eastern side of an upper level trough that is southeast of New Caledonia.  The upper level trough will produce northwesterly winds that will blow toward the top of Rae’s circulation.  Those winds will cause the vertical wind shear to increase.  The combination of cooler water and more vertical wind shear will cause Tropical Cyclone Rae to weaken during the next 24 hours.

The upper level trough southeast of New Caledonia will steer Tropical Cyclone Rae toward the southeast during the next 24h hours.  On its anticipated track, Tropical Cyclone Rae will pass well to the south of Tonga.

Elsewhere, Tropical Cyclone 21P formed between Vanuatu and Fiji.  At 4:00 p.m. EST on Monday the center of Tropical Cyclone 21P was located at latitude 16.6°S and longitude 170.7°W which put the center about 180 miles (290 km) east-northeast of Port Vila, Vanuatu.  Tropical Cyclone 21P was moving toward the southeast at 5 m.p.h. (8 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 983 mb.

 

Tropical Cyclone Rae Brings Wind and Rain to Eastern Fiji

Tropical Cyclone Rae brought wind and rain to eastern Fiji on Sunday night.  At 7:00 p.m. EST on Sunday the center of Tropical Cyclone Rae was located at latitude 18.2°S and longitude 179.4°W which put the center about 55 miles (90 km) east-northeast of Moala, Fiji.  Rae was moving toward the south-southwest at 11 m.p.h. (17 km/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 988 mb.

Tropical Cyclone Rae brought strong winds and heavy rain to parts of eastern Fiji on Sunday night.  Rae passed over the Lau Group of islands.  The center of Tropical Cyclone Rae passed near Naitaba, Vanna Balavu, Mago, and Cicia.

Tropical Cyclone Rae intensified as it passed over eastern Fiji.  The inner end of a rainband wrapped around the center of Rae’s circulation.  An eye formed at the center of Tropical Cyclone Rae.  A ring thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Rae.  Storms near the core generated upper level divergence that pumped mass away from the tropical cyclone.

The circulation around Tropical Cyclone Rae became more circular on Sunday.  Winds to tropical storm force extended out 140 miles (225 km) from the center of Rae’s circulation.

Tropical Cyclone Rae will move through an environment favorable for intensification during the next 24 hours.  Rae will move over water where where the Sea Surface Temperatures are near 28°C.  It will move under the middle of an upper level ridge near Fiji. The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Tropical Cyclone Rae is likely to intensify to the equivalent of a hurricane/typhoon during the next 24 hours.

Tropical Cyclone Rae will move around the western end of a high pressure system over the South Pacific Ocean.  The high pressure system will steer Rae toward the south during the next 24 hours.  On its anticipated track, Tropical Cyclone Rae will move over the southern islands of in the Lau Group.

Tropical Cyclone Rae will bring continue to bring strong winds and heavy rain to the Lau Group of islands.  The center of center of Rae’s circulation will pass near Moala, Totoya, and Mataku.  Heavy rain is likely to cause flash floods in some locations.

Tropical Cyclone Rae Forms Northeast of Fiji

Tropical Cyclone Rae formed northeast of Fiji on Sunday.  At 4:00 a.m. EST on Sunday the center of Tropical Cyclone Rae was located at latitude 15.8°S and longitude 178.9°W which put the center about 200 miles (325 km) northeast of Suva, Fiji.  Rae was moving toward the south-southwest at 8 m.p.h. (13 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.

A low pressure system over the South Pacific Ocean strengthened on Sunday and the Fiji Meteorological Service designated the system as Tropical Cyclone Rae.  The circulation around Tropical Cyclone Rae was organizing rapidly on Sunday.  More thunderstorms developed near the center of Tropical Cyclone Rae.  More thunderstorms also formed in the bands revolving around the center of Rae’s circulation.  Storms near the center of Rae generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Cyclone Rae became more symmetrical on Sunday.  Winds to tropical storm force extended out 180 miles (290 km) from the center of Rae’s circulation.

Tropical Cyclone Rae will move through an environment favorable for intensification during the next 24 hours.  Rae. will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge near Fiji. The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear. Tropical Cyclone Rae will intensify during the next 24 hours.

Tropical Cyclone Rae will move around the western end of a high pressure system over the South Pacific Ocean.  The high pressure system will steer Rae toward the south during the next 24 hours.  On its anticipated track, Tropical Cyclone Rae will move over the islands of eastern Fiji.  The center of Rae’s circulation will pass east of Vanua Levu.

Tropical Cyclone Rae will bring strong winds and heavy rain to the Lau Group of islands.  The center of center of Rae’s circulation could pass near Vanna Balavu.  Heavy rain could cause flash floods in some locations.

Tropical Cyclone Alfred Forms over the Coral Sea

Tropical Cyclone Alfred formed over the Coral Sea on Sunday.  At 4:00 a.m. EST on Sunday the center of Tropical Cyclone Alfred was located at latitude 14.3°S and longitude 153.7°E which put the center about 560 miles (900 km) east-northeast of Cairns, Australia.  Alfred was moving toward the east at 8 m.p.h. (13 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 990 mb.

A low pressure system over the Coral Sea strengthened on Sunday and the Australian Bureau of Meteorology designated the system as Tropical Cyclone Alfred.  The circulation around Tropical Cyclone Alfred exhibited more organization on Sunday.  More thunderstorms formed near the center of Alfred’s circulation.  More thunderstorms also developed in bands revolving around the center of Tropical Cyclone Alfred.  Storms near the center of Alfred generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Cyclone Alfred was fairly large.  Winds to tropical storm force extended out 180 miles (290 km) from the center of Alfred’s circulation.

Tropical Cyclone Alfred will move through an environment favorable for intensification during the next 24 hours.  Alfred will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the Coral Sea.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Tropical Cyclone Alfred will intensify during the next 24 hours.

Tropical Cyclone Alfred will move around the southern side of a high pressure system that is near the Equator.  The high pressure system will steer Alfred toward the east during the next 24 hours.  On its anticipated track, Tropical Cyclone Alfred will move farther away from Australia.  Alfred is like to start to move toward the south early next week.

Elsewhere, Tropical Cyclone Bianca formed over the South Indian Ocean northwest of Australia.  At 4:00 a.m. EST on Sunday the center of Tropical Cyclone Bianca was located at latitude 17.0°S and longitude 106.9°E which put the center about 590 miles (950 km) northwest of Exmouth, Australia.  Bianca was moving toward the west-southwest at 15 m.p.h. (24 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.

Tropical Cyclone Pita Forms West of Niue

Tropical Cyclone Pita formed over the South Pacific Ocean west of Niue on Friday.  At 1:00 p.m. EST on Friday the center of Tropical Cyclone Pita was located at latitude 18.5°S and longitude 172.2°W which put the center about 155 miles (250 km) west-northwest of Niue.  Pita was moving toward the east-southeast 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 991 mb.

A low pressure system over the South Pacific Ocean west of Niue strengthened on Friday and the Fiji Meteorological Service designated the system as Tropical Cyclone Pita.  The circulation around Tropical Cyclone Pita organized quickly on Friday.  The inner end of a rainband wrapped around the eastern and southern sides of the center of Pita’s circulation.  Bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Pita.  Storms near the center of Pita generated upper level divergence that pumped mass away from the tropical cyclone.

Tropical Cyclone Pita will move through an environment favorable for intensification during the next 24 hours.  Pita will move over water where where the Sea Surface Temperatures are near 28°C.  It will move under the southern part of an upper level ridge over the South Pacific Ocean.  The upper level ridge will produce westerly winds that will blow toward the top of Pita’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Cyclone Pita is likely to intensify during the next 24 hours.

Tropical Cyclone Pita will move around the northern side of a high pressure system over the South Pacific Ocean.  The high pressure system will steer Pita toward the east-southeast during the next 24 hours.  On its anticipated track, the center of Tropical Cyclone Pita will reach Niue in less than 12 hours.

Tropical Cyclone PIta will bring strong winds and heavy rain to Niue.  Heavy rain is likely to cause flash floods in some locations.

Tropical Cyclone Paul Weakens

Tropical Cyclone Paul weakened over the Coral Sea on Thursday night. At 11:00 p.m. EDT on Thursday the center of Tropical Cyclone Paul was located at latitude 15.2°S and longitude 156.5°E which put it about 325 miles (525 km) southeast of the Tagula Island. Paul was moving toward the east 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 1001 mb.

Tropical Cyclone Paul strengthened earlier on Thursday when it was in a more favorable environment. Then an upper level trough near the east coast of Australia began to produce strong west-northwesterly winds that blew across the top of Paul’s circulation. Those winds caused the vertical wind shear to increase. The stronger vertical wind shear blew the tops off of many of the thunderstorms in Tropical Cyclone Paul. A few thunderstorms were still occurring in bands in the southeastern part of Paul’s circulation. Bands in the other parts of Tropical Cyclone Paul consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 40 miles (65 km) from the center of Paul.

Tropical Cyclone Paul will move through an environment unfavorable for intensification during the next 24 hours. Paul will move over water where the Sea Surface Temperatures are near 29°C. However, the upper level trough near eastern Australia will continue to produce strong west-northwesterly winds that will blow across the top of Paul’s circulation. Those winds will cause strong vertical wind shear. The strong wind shear will cause Paul to continue to weaken.

Tropical Cyclone Paul will be steered by the winds in the lower levels of the atmosphere because of the strong vertical wind shear. Paul will move around the northern side of high pressure system over the Southwest Pacific Ocean and eastern Australia. The high pressure system will steer Paul toward the west-northwest during the next 24 hours. On its anticipated track, Tropical Cyclone Paul will weaken over the Coral Sea.