Tropical Cyclone Cheneso Strengthens to Equivalent of a Hurricane/Typhoon

Tropical Cyclone Cheneso strengthened to the equivalent of a hurricane/typhoon over the Mozambique Channel west of Madagascar on Tuesday. At 10:00 p.m. EST on Tuesday the center of Tropical Cyclone Cheneso was located at latitude 20.1°S and longitude 43.0°E which put it about 75 miles (120 km) west of Morondava, Madagascar. Cheneso was nearly stationary. The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 977 mb.

Tropical Cyclone Cheneso rapidly intensified to the equivalent of a hurricane/typhoon over the warm water in the Mozambique Channel west of Madagascar on Tuesday. The inner end of a rainband wrapped most of the way around Cheneso’s circulation. A circular eye appeared to be developing at the center of circulation. Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Cheneso. Storms near the core generated upper level divergence that pumped mass away from the tropical cyclone. Winds to hurricane/typhoon force extended out 20 miles (30 km) from the center of Cheneso. Winds to tropical storm force extended out 150 miles (240 km) from the center of circulation.

Tropical Cyclone Cheneso will be in an environment favorable for intensification during the next 36 hours. Cheneso will be over over water where the Sea Surface Temperatures are near 29˚C. It will be under the axis of an upper level ridge that stretches from Madagascar westward across southern Africa. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Tropical Cyclone Cheneso will intensify during the next 36 hours. Cheneso could intensify rapidly at times. Tropical Cyclone Cheneso could strengthen to the equivalent of a major hurricane in two or three days.

Tropical Cyclone Cheneso will be in a region where the steering winds are weak during the next 24 hours. Cheneso could be nearly stationary during much of Wednesday. The northwestern part of a high pressure system over the Southwest Indian Ocean will start to steer Tropical Cyclone Cheneso toward the southwest in 24 to 36 hours. On its anticipated track Tropical Cyclone Cheneso will remain near the west coast of Madagascar during the next 24 hours. Bands of showers and thunderstorms in the eastern side of Cheneso’s circulation could continue to drop locally heavy rain over parts of the west coast of Madagascar. Heavy rain falling on saturated ground is likely to cause flooding in some locations.