Tag Archives: Aneityum

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 Dovi Brings Wind and Rain to Vanuatu

Tropical Cyclone Dovi brought wind and rain to parts of Vanuatu on Wednesday morning. At 10:00 a.m. EST on Wednesday the center of Tropical Cyclone Dovi was located at latitude 20.5°S and longitude 169.4°E which put it about 260 miles (420 km) east-northeast of Noumea, New Caledonia. Dovi was moving toward the southeast at 6 m.p.h. (10 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 Cyclone Dovi brought gusty winds and rain to southern Vanuatu on Wednesday morning. The center of Dovi’s circulation was southwest of Aneityum. Bands on the northern side of Tropical Cyclone Dovi also brought wind and rain to Erromango and Tanna. The inner end of a rainband wrapped around the center of Dovi’s circulation, which could represent the initial stage in the formation of an eyewall. Most of the thunderstorms and the strongest winds were occurring in bands in the northern half of Tropical Cyclone Dovi. Bands in the southern half of the circulation consisted primarily of showers and lower clouds. Storms near the center generated upper level divergence that pumped mass away from the tropical cyclone. Winds to tropical storm force extended out 175 miles (280 km) in the northern half of Dovi’s circulation. Winds to tropical storm force extended out 70 miles (110 km) in the southern half of the circulation.

Tropical Cyclone Dovi will move through an environment favorable for intensification during the next 24 hours. Dovi will move over water where the Sea Surface Temperatures are near 28˚C. It will move under the western part of an upper level ridge centered east of New Caledonia. The ridge will produce southerly winds that will blow toward the top of the tropical cyclone. Those winds will some moderate vertical wind shear. The wind shear will inhibit intensification, but it will not be strong enough to prevent intensification. Tropical Cyclone Dovi will intensify during the next 24 hours and it could strengthen rapidly if an inner core with an eye and an eyewall devlops.

Tropical Cyclone Dovi will move around the western side of a high pressure system over the South Pacific Ocean. The high pressure system will steer Dovi toward the southwest during the next 24 hours. On its anticipated track Tropical Cyclone Dovi will move slowly away from Vanuatu. Weather conditions will gradually improve as Dovi moves away. Tropical Cyclone Dovi will be near the Loyalty Islands in 12 hours. The center could pass near Mare. Dovi will bring gusty winds and locally heavy rain to Ouvea, Lifou and Mare. The center of Tropical Cyclone Dovi could be near Ile des Pins in 24 hours. Dovi will begin to affect southern New Caledonia during the next 24 hours.