Category Archives: South Pacific

Tropical Cyclone Freddy Moves Away from Western Australia

Tropical Cyclone Freddy moved away from Western Australia on Wednesday morning. At 10:00 a.m. EST on Wednesday the center of Tropical Cyclone Freddy was located at latitude 16.1°S and longitude 112.7°E which put it about 440 miles (710 km) north of Learmonth, Australia. Freddy was moving toward the west-southwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 115 m.p.h. (185 km/h). The minimum surface pressure was 972 mb.

Tropical Cyclone Freddy started to weaken as it moved away from Western Australia on Wednesday morning. Freddy was moving under the northwestern part of an upper level ridge over Australia. The upper level ridge was producing easterly winds that were blowing toward the top of Freddy’s circulation. Those winds were causing moderate vertical wind shear. The wind shear caused the distribution of thunderstorms in Tropical Cyclone Freddy to become asymmetrical. Many of the thunderstorms were occurring in bands in the western half of Freddy’s circulation. Bands in the eastern side of Freddy consisted primarily of showers and lower clouds. Winds to hurricane/typhoon force extended out 30 miles (50 km) from the center of Tropical Cyclone Freddy. Winds to tropical storm force extended out 115 miles (185 km) from the center of circulation.

Tropical Cyclone Freddy will move through an environment that is unfavorable for intensification during the next 24 hours. Freddy will move over over water where the Sea Surface Temperatures are near 28˚C. However, the upper level ridge over Australia will continue to cause moderate vertical wind shear. The wind shear is likely to cause Tropical Cyclone Freddy to weaken during the next 24 hours. The wind shear could lessen when Freddy moves farther west on Friday. If the shear lessens, then Tropical Cyclone Freddy could start to intensify again.

Elsewhere, Tropical Cyclone Gabrielle strengthened over the Coral Sea. At 10:00 a.m. EST on Wednesday the center of Tropical Cyclone Gabrielle was located at latitude 17.2°S and longitude 152.8°E which put it about 450 miles (725 km) east of Cairns, Australia. Gabrielle was moving toward the south-southwest at 9 m.p.h. (15 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 983 mb. Tropical Cyclone Gabrielle is forecast to move toward the southeast and to strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Gabrielle Forms over the Coral Sea

Tropical Cyclone Gabrielle formed over the Coral Sea on Tuesday night. At 10:00 p.m. EST on Tuesday the center of Tropical Cyclone Gabrielle was located at latitude 15.7°S and longitude 153.3°E which put it about 230 miles (370 km) east-northeast of Willis Island. Gabrielle was moving toward the south-southwest at 10 m.p.h. (16 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.

A low pressure system over the Coral Sea strengthened on Tuesday night and the Australian Bureau of Meteorology designated the system as Tropical Cyclone Gabrielle. The inner end of a rainband wrapped around the northern and eastern side of the center of Gabrielle’s circulation. 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 cyclone. Winds to tropical storm force extended out 65 miles (105 km) from the center of Tropical Cyclone Gabrielle.

Tropical Cyclone Gabrielle will move through an environment favorable for intensification during the next 24 hours. Gabrielle will move over over water where the Sea Surface Temperatures are near 29˚C. It will move under the center of an upper level ridge over the Coral Sea. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Tropical Cyclone Gabrielle will intensify during the next 24 hours. Gabrielle could intensify rapidly at times and it could strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Gabrielle will move around the western end of a high pressure system over the Southwest Pacific Ocean during the next 24 hours. The high pressure system will steer Gabrielle toward the south. On its anticipated track Tropical Cyclone Gabrielle will remain east of Australia. An upper level trough over Australia will steer Gabrielle toward the southeast later this week.

Tropical Cyclone Irene Forms West of Vanuatu

Tropical Cyclone Irene formed over the South Pacific Ocean west of Vanuatu on Wednesday morning. At 10:00 a.m. EST on Wednesday the center of Tropical Cyclone Irene was located at latitude 18.7°S and longitude 166.3°E which put it about 320 miles (520 km) west-southwest of Port Vila, Vanuatu. Irene was moving toward the east at 21 m.p.h. (33 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.

An area of low pressure over the South Pacific Ocean strengthened rapidly on Wednesday morning and the Fiji Meteorological Service designated the system as Tropical Cyclone Irene. The inner end of a rainband wrapped around the western and southern side of Irene’s circulation. Other bands of thunderstorms were occurring in the eastern half of Tropical Cyclone Irene. Bands in the western half of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the southeast of the tropical cyclone. Winds to tropical storm force extended out 115 miles (185 km) from the center of Irene.

Tropical Cyclone Irene will move through an environment favorable for intensification during the next 24 hours. Irene will move over over water where the Sea Surface Temperatures are near than 28˚C. An upper level trough east of Australia will produce northwesterly winds that will blow toward the top of Irene’s circulation. Those winds will cause vertical wind shear, but the wind shear will not be strong enough to prevent intensification. Tropical Cyclone Irene is likely to intensify during the next 24 hours. It could intensify rapidly during the next 12 hours. Irene could strengthen to the equivalent of a hurricane/typhoon.

The upper level trough east of Australia will steer Tropical Cyclone Irene quickly to the east-southeast during the next 24 hours. The center of Irene could pass near the southern islands of Vanuatu in 12 hours. The center of Tropical Cyclone Irene will be near Tanna and Aneityum in 12 hours. Irene could bring strong gusty winds and locally heavy rain to southern Vanuatu. Heavy rain could cause flash floods in some locations.

Tropical Cyclone Gina Moves over Vanuatu

Tropical Cyclone Gina moved over Vanuatu on Thursday. At 5:00 p.m. EDT on Thursday the center of Tropical Cyclone Gina was located at latitude 17.4°S and longitude 168.4°E which put it about 35 miles (55 km) north-northwest of Port Vila, Vanuatu. Gina was moving toward the south-southwest 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 1002 mb.

The center of Tropical Cyclone Gina moved over southern Vanuatu on Thursday. The distribution of thunderstorms around Gina’s circulation continued to be asymmetrical. The strongest thunderstorms were occurring in bands in the southeastern part of Tropical Cyclone Gina. Heavy rain fell on Efate. Bands in the other parts of Gina’s circulation consisted primarily of showers and lower clouds. An upper level trough over the Coral Sea continued to produce northwesterly winds that were blowing toward the top of Tropical Cyclone Gina. Those winds were still causing moderate vertical wind shear and the wind shear was contributing to the asymmetrical distribution of thunderstorms. Winds to tropical storm force extended out 50 miles (80 km) from the center of Gina’s circulation.

Tropical Cyclone Gina will move through an environment that is only marginally favorable for intensification during the next 36 hours. Gina will move over water where the Sea Surface Temperatures are near 27˚C. However, the upper level trough over the Coral Sea will continue to produce northwesterly winds that will cause moderate vertical wind shear. The wind shear will strongly inhibit intensification. Tropical Cyclone Gina could maintain its intensity during the next 36 hours, if the upper level winds do not get stronger. If the wind shear increases, then Gina could weaken.

Tropical Cyclone Gina will move around the northwestern part of a high pressure system over the South Pacific Ocean during the next 26 hours. The high pressure system will steer Gina toward the southwest. On its anticipated track the center of Tropical Cyclone Gina will move southwest of Vanuatu during the next 36 hours. Gina could be northeast of New Caledonia during the weekend. Heavy rain could continue to fall over Efate during the next 12 to 18 hours. Rain should end on Friday when Tropical Cyclone Gina moves away from Vanuatu.

Tropical Cyclone Gina Forms East of Vanuatu

Tropical Cyclone Gina formed over the South Pacific Ocean east of Vanuatu on Wednesday. At 5:00 p.m. EDT on Wednesday the center of Tropical Cyclone Gina was located at latitude 15.3°S and longitude 168.9°E which put it about 190 miles (305 km) north-northeast of Port Vila, Vanuatu. Gina 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 1002 mb.

A low pressure system over the South Pacific Ocean east of Vanuatu strengthened on Wednesday and the Fiji Meteorological Service designated the system as Tropical Cyclone Gina. The low level center of Tropical Cyclone Gina was located east of Maewo and northeast of Pentecost. The distribution of thunderstorms around Gina’s circulation was asymmetrical. The strongest thunderstorms were occurring in bands in the southeastern part of Tropical Cyclone Gina. Bands in the other parts of Gina’s circulation consisted primarily of showers and lower clouds. An upper level trough over the Coral Sea was producing northwesterly winds that were blowing toward the top of Tropical Cyclone Gina. Those winds were causing moderate vertical wind shear and the wind shear was contributing to the asymmetrical distribution of thunderstorms. Winds to tropical storm force extended out 60 miles (95 km) from the center of Gina’s circulation.

Tropical Cyclone Gina will move into an environment that is only marginally favorable for intensification during the next 24 hours. Gina will move over water where the Sea Surface Temperatures are near 27˚C. However, the upper level trough over the Coral Sea will continue to produce northwesterly winds that will cause moderate vertical wind shear. The wind shear will strongly inhibit intensification. Tropical Cyclone Gina could strengthen a little during the next 24 hours, if the upper level winds weaken slightly. If the wind shear increases, then Gina could weaken.

Tropical Cyclone Gina will move around the northwestern part of a high pressure system over the South Pacific Ocean during the next 24 hours. The high pressure system will steer Gina toward the southwest. On its anticipated track the center of Tropical Cyclone Gina will move across Pentecost during the next 12 hours. The center of Gina could pass just north of Ambrym and it could move across Malekula within 24 hours. Since the strongest thunderstorms are in the southeastern part of Tropical Cyclone Gina, the gustiest winds and heaviest rain could affect Efate and Port Vila. Heavy rain could cause flash floods in some locations.

Tropical Cyclone May Develop Northeast of Vanuatu

A tropical cyclone may develop over the South Pacific Ocean northeast of Vanuatu during the next several days. At 2:00 p.m. EDT on Monday the center of a low pressure system, also designated at Invest 91P, was located at latitude 13.5°S and longitude 171.7°E which put it about 375 miles (600 km) northeast of Port Vila, Vanuatu. The low pressure system was moving toward the south-southwest at 4 m.p.h (6 km/h). The maximum sustained wind speed was 20 m.p.h. (30 km/h) and there were wind gusts to 30 m.p.h. (50 km/h). The minimum surface pressure was 1010 mb.

More thunderstorms formed just to the southwest of the center of a low pressure system over the South Pacific Ocean northeast of Vanuatu on Monday. Thunderstorms also formed in bands revolving around the center of the low pressure system. The storms just southwest of the center of circulation began to generate upper level divergence that started to pump mass away from the low pressure system. The better organization exhibited by the low pressure system increased the potential that the low may develop into a tropical cyclone during the next several days.

The low pressure system will move into an environment that is favorable for the development of a tropical cyclone. The low pressure system will move over water where the Sea Surface Temperatures are near 27˚C. It will move under the western side of an upper level ridge over the South Pacific Ocean. The ridge will produce northerly winds that will blow toward the top of the low pressure system. Those winds will cause some vertical wind shear, but the shear will not be great enough to prevent intensification. The low pressure system could strengthen to a tropical cyclone during the next several days.

The low pressure system will move around the western end of a high pressure system over the South Pacific Ocean. The high pressure system will steer the low pressure system toward the south-southwest during the next several days. On its anticipated track the low pressure system could approach southern Vanuatu later this week.

Tropical Cyclone Fili Brings Wind and Rain to New Caledonia

Tropical Cyclone Fili brought gusty winds and rain to New Caledonia on Wednesday. At 11:00 p.m. EDT on Wednesday the center of Tropical Cyclone Fili was located at latitude 22.9°S and longitude 164.7°E which put it about 115 miles (185 km) west-southwest of Noumea, New Caledonia. Fili was moving toward the south-southeast at 9 m.p.h (15 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.

Bands in the eastern half of Tropical Cyclone Fili brought gusty winds and locally heavy rain to New Caledonia on Wednesday. The core of Fili’s circulation with the strongest winds passed just west of New Caledonia. Tropical Cyclone Fili began to weaken slowly on Wednesday evening, but the circulation remained well organized. The strongest thunderstorms were occurring in bands in the eastern half of Fili’s circulation. Bands in the western half of Tropical Cyclone Fili consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 120 miles (195 km) from the center of Fili.

Tropical Cyclone Fili will move through an environment unfavorable for intensification during the next 36 hours. Fili will move over water where the Sea Surface Temperatures are near 26˚C. It will move under the southwestern part of an upper level ridge over the South Pacific Ocean. The ridge will produce stronger northwesterly winds that will blow toward the top of Fili’s circulation during the next two days. Those winds will cause more vertical wind shear. Drier air in the western half of Tropical Cyclone Fili will inhibit the formation of thunderstorms in that part of the circulation. The combination of more vertical wind shear and drier air will cause Tropical Cyclone Fili to weaken during the next 36 hours. Fili could begin to make a transition to an extratropical cyclone when it moves farther south where the Sea Surface Temperatures are colder.

Tropical Cyclone Fili will move around the western end of a high pressure system over the South Pacific Ocean during the next 36 hours. The high pressure system will steer Fili toward the southeast during that time period. On its anticipated track Tropical Cyclone Fili will move away from New Caledonia during the next 36 hours. The gusty winds and locally heavy rain will diminish when Fili moves farther away from New Caledonia.

Tropical Cyclone Fili Strengthens Northwest of New Caledonia

Tropical Cyclone Fili strengthened over the Coral Sea northwest of New Caledonia on Tuesday. At 11:00 p.m. EDT on Tuesday the center of Tropical Cyclone Fili was located at latitude 19.8°S and longitude 162.5°E which put it about 120 miles (195 km) west-northwest of Poum, New Caledonia. Fili was moving toward the south-southeast at 9 m.p.h (15 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 986 mb.

Tropical Cyclone Fili strengthened on Tuesday as it moved over the Coral Sea northwest of New Caledonia. The inner end of a rainband wrapped around the center of Fili’s circulation. Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical cyclone. Even though Tropical Cyclone Fili strengthened, some drier air appeared to be pulled into the western half of its circulation. The strongest thunderstorms were occurring in bands in the eastern half of Fili. Bands in the western half of the circulation consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 160 miles (260 km) in the eastern side of Tropical Cyclone Fili. Winds to tropical storm force extended out 100 miles (160 km) in the western half of Fili.

Tropical Cyclone Fili will move through an environment that will be mostly favorable for intensification during the next 24 hours. Fili will move over water where the Sea Surface Temperatures are near 27˚C. It will move under the southwestern part of an upper level ridge over the South Pacific Ocean. The ridge will produce northwesterly winds that will blow toward the top of Fili’s circulation. Those winds will cause some vertical wind shear, but the wind shear will not be large enough to prevent intensification. The drier air in the western half of Tropical Cyclone Fili will inhibit the formation of thunderstorms in that part of the circulation. The drier air will inhibit intensification. Tropical Cyclone Fili could intensify during the next 24 hours, but the drier air could limit strengthening.

Tropical Cyclone Fili will move around the western end of a high pressure system over the South Pacific Ocean during the next 36 hours. The high pressure system will steer Fili toward the south-southeast during that time period. On its anticipated track the center of Tropical Cyclone Fili will pass west of New Caledonia during the next 36 hours. Rainbands in the eastern half of Fili will bring gusty winds and locally heavy rain to New Caledonia. Heavy rain could cause flash floods in some locations.

Tropical Cyclone Fili Develops Northwest of New Caledonia

Tropical Cyclone Fili developed over the Coral Sea northwest of New Caledonia on Monday. At 11:00 p.m. EDT on Monday the center of Tropical Cyclone Fili was located at latitude 18.0°S and longitude 160.4°E which put it about 250 miles (400 km) northwest of Poum, New Caledonia. Fili was moving toward the west-southwest at 11 m.p.h (17 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 995 mb.

A low pressure system over the Coral Sea northwest of New Caledonia strengthened on Monday and the system was designated as Tropical Cyclone Fili. More thunderstorms developed near the center of Tropical Cyclone Fili but the distribution of thunderstorms was asymmetrical. Many of the stronger thunderstorms were occurring in bands in the eastern half of Fili’s circulation. Bands in the western half of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the east of the tropical cyclone. The wind field around Tropical Cyclone Fili was also asymmetrical. Winds to tropical storm force extended out 170 miles (280 km) in the northern half of the circulation. Winds to tropical storm force only extended out 80 miles (130 km) in the southern half of Fili.

Tropical Cyclone Fili will move through an environment favorable for intensification during the next 24 hours. Fili will move over water where the Sea Surface Temperatures are near 28˚C. It will move under the southwestern part of an upper level ridge over the South Pacific Ocean. The ridge will produce northwesterly winds that will blow toward the top of Fili’s circulation. Those winds will cause moderate vertical wind shear. The wind shear will inhibit intensification, but Tropical Cyclone Fili is likely to intensify during the next 24 hours. It could strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Fili will move around the western end of a high pressure system over the South Pacific Ocean during the next 36 hours. The high pressure system will steer Fili toward the south during that time period. On its anticipated track Tropical Cyclone Fili could move west of the northern end of New Caledonia within 36 hours.

Tropical Cyclone Dovi Moves Toward New Zealand

Tropical Cyclone Dovi moved toward New Zealand on Friday morning. At 10:00 a.m. EST on Friday the center of Tropical Cyclone Dovi was located at latitude 30.0°S and longitude 166.3°E which put it about 780 miles (1200 km) northwest of Auckland, New Zealand. Dovi was moving toward the south at 24 m.p.h. (39 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 969 mb.

Tropical Cyclone Dovi was located between New Caledonia and New Zealand on Friday morning. There was an eye with a diameter of 25 miles (40 km) at the center of Dovi’s circulation. The eye was surrounded by a broken ring of thunderstorms. The strongest thunderstorms were occurring in the eastern half of the ring. There were breaks in the northwestern part of the ring of storms. Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Dovi. Storms near the core generated upper level divergence that pumped mass away to the southeast of the tropical cyclone. Winds to hurricane/typhoon force extended out 50 miles (80 km) from the center of Dovi. Winds to tropical storm force extended out 250 miles (400 km) from the center of circulation.

Tropical Cyclone Dovi will move into an environment that is unfavorable for a tropical cyclone. Dovi will move over water where the Sea Surface Temperatures are near 23˚C. An upper level trough centered east of Australia will produce strong northwesterly winds that will blow toward the top of Dovi’s circulation. Those winds will cause strong vertical wind shear. The combination of colder water and strong vertical wind shear will cause Tropical Cyclone Dovi to make a transition to a strong extratropical cyclone.

The upper level trough east of Australia will steer Tropical Cyclone Dovi toward the southeast during the next 36 hours. On its anticipated track Dovi will move across New Zealand during the weekend. Tropical Cyclone Dovi will be a strong extratropical cyclone when it crosses New Zealand. Dovi will bring strong winds and locally heavy rain to parts of New Zealand. The strongest winds and heaviest rain will occur in northern New Zealand.