Tropical Cyclone Chalane strengthened east of Mozambique on Tuesday. At 4:00 a.m. EST on Tuesday the center of Tropical Cyclone Chalane was located at latitude 19.6°S and longitude 39.3°E which put it about 225 miles (365 km) east of Beira, Mozambique. Chalane was moving toward the west at 18 m.p.h. (30 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.
The circulation around Tropical Cyclone Chalane was much more symmetrical and it exhibited better organization on Tuesday. The inner end of a rainband wrapped around the center of circulation and satellite images indicated that an eye could be forming at the center of Chalane. Bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Chalane. Storms near the center generated upper level divergence which was pumping mass away from the tropical cyclone. The circulation around Chalane was small. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.
Tropical Cyclone Chalane will move through an environment favorable for intensification during the next 24 hours. Chalane will move over water where the Sea Surface Temperature is near 31°C. It will move under the axis of an upper level ridge over the Southwest Indian Ocean. The winds near the axis of the ridge are weak and there will be little vertical wind shear. Tropical Cyclone Chalane will intensify today and it could strengthen to the equivalent of a hurricane/typhoon.
Tropical Cyclone Chalane will move north of a subtropical high pressure system over the Southwest Indian Ocean. The high will steer Chalane toward the west during the next two days. On its anticipated track Tropical Cyclone Chalane will make landfall near Beira, Mozambique in 24 hours. Tropical Cyclone Chalane could be the equivalent of a hurricane/typhoon when it reaches Mozambique. Chalane will bring strong winds to the portion of the coast near Beira. It could cause a storm surge at the coast of up to 7 feet (2 meters). Tropical Cyclone Chalane will drop heavy rain over parts of central Mozambique and flash floods could occur.