Tropical Cyclone Vernon Forms Southwest of Cocos Island

Tropical Cyclone Vernon formed over the South Indian Ocean southwest of Cocos Island on Thursday night. At 10:00 p.m. EST on Thursday the center of Tropical Cyclone Vernon was located at latitude 13.5°S and longitude 95.3°E which put it about 140 miles (220 km) southwest of Cocos Island. Vernon was moving toward the west-southwest 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 995 mb.

The circulation around a low pressure system over the South Indian Ocean southwest of Cocos Island strengthened on Thursday night and the Australian Bureau of Meteorology designated the system as Tropical Cyclone Vernon. More thunderstorms formed near the center of Tropical Cyclone Vernon. Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical cyclone. Bands of showers and thunderstorms were revolving around the core of Vernon’s circulation. Winds to tropical storm force extended out 60 miles (95 km) from the center of circulation.

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

Tropical Cyclone Vernon will move north of a high pressure system over the South Indian Ocean. The high pressure system will steer Vernon toward the west during the next few days. On its anticipated track Tropical Cyclone Vernon will move farther away from Cocos Island.