Tropical Cyclone Judy formed over the Southwest Pacific Ocean north of Vanuatu on Sunday night. At 10:00 p.m. EST on Sunday the center of Tropical Cyclone Judy was located at latitude 12.8°S and longitude 170.7°E which put it about 60 miles (95 km) southeast of Fatutaka. Judy was moving toward the west-southwest at 9 m.p.h. (15 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.

A low pressure system over the Southwest Pacific Ocean north of Vanuatu strengthened on Sunday night and the Fiji Meteorological Service designated the system as Tropical Cyclone Judy. Thunderstorms developed near the center of Judy’s circulation. Those thunderstorms began to generate upper level divergence that pumped mass away from the tropical cyclone. Other thunderstorms formed in bands revolving around the center of Tropical Cyclone Judy. Winds to tropical storm force extended out 140 miles (225 km) from the center of circulation.

Tropical Cyclone Judy will move through an environment favorable for intensification during the next 36 hours. Judy will move over over water where the Sea Surface Temperatures are near 30˚C. It will move under the middle of an upper level ridge east of Vanuatu. The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear. Tropical Cyclone Judy will intensify during the next 36 hours. Judy could rapidly intensify to the equivalent of a hurricane/typhoon during the next 24 hours.

Tropical Cyclone Judy will move around the western end of a high pressure system during the next several days. The high pressure system will steer Judy toward the southwest during the next 24 hours. Judy will move toward the south when it moves around the western end of the high pressure system. On its anticipated track Tropical Cyclone Judy could be near Maewo in 24 hours. The center of Judy will pass near Pentecost, Ambrym, Epi, Efate, Erromango and Tanna. The center of Tropical Cyclone Judy could be near Port Vila in 42 hours.

Tropical Cyclone Judy will be the equivalent of a hurricane/typhoon when it moves over Vanuatu. Judy will produce strong winds and locally heavy rain. Heavy rain is likely to cause flash floods in some locations. Tropical Cyclone Judy will also cause a storm surge where the wind blows water toward the islands.