Tropical Cyclone Diane passed south of Rodrigues on Saturday. At 4:00 p.m. EST on Saturday the center of Tropical Cyclone Diane was located at latitude 22.2°S and longitude 64.7°E which put it about 190 miles (305 km) south-southeast of Port Mathurin, Maritius. Diane was moving toward the east-southeast at 23 m.p.h. (37 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 993 mb.
Tropical Cyclone Diane brought winds to tropical storm force when it passed south of Rodrigues. Diane also caused winds to tropical storm force over Mauritius earlier on Saturday. A weather station at Le Morne on Mauritius measured a wind speed of 49 m.p.h. (79 km/h). Several other weather stations on Mauritius including one at the international airport also reported winds to tropical storm force.
Tropical Cyclone Diane will move through an environment only marginally favorable for intensification. Diane will move over water where the Sea Surface Temperature is near 27°C. An upper level trough east of Madagascar will produce northwesterly winds which will blow toward the top of the tropical cyclone. Those winds will cause moderate vertical wind shear which will inhibit intensification. Tropical Cyclone Diane could strengthen a little more during the next 12 hours, but the wind shear will cause weakening in a day or two.
The upper level trough will steer Tropical Cyclone Diane toward the east-southeast during the next 24 to 36 hours. On its anticipated track Diane will move quickly away from Rodrigues
Elsewhere over the South Indian Ocean, Tropical Cyclone Esami was churning about 1000 miles (1600 km) east of Tropical Cyclone Diane. At 4:00 p.m. EST on Saturday the center of Tropical Cyclone Esami was located at latitude 25.9°S and longitude 74.8°E which put it about 1160 miles (1875 km) east-southeast of Port Louis, Mauritius. Esami was moving toward the southeast at 13 m.p.h. (20 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 996 mb.