Tag Archives: IO95

Low Pressure System Forms over Bay of Bengal

A low pressure system formed over the Bay of Bengal on Thursday. The low pressure system was designated as Invest 95B. At 10:00 p.m. EST on Thursday the center of a low pressure system was located at latitude 9.4°N and longitude 86.3°E which put it about 485 miles (780 km) southeast of Chennai, India. The low pressure system was moving toward the northwest at 10 m.p.h. (16 km/h). The maximum sustained wind speed was 25 m.p.h. (40 km/h) and there were wind gusts to 35 m.p.h. (55 km/h). The minimum surface pressure was 1008 mb.

The circulation around a low pressure system over the Bay of Bengal exhibited more organization on Thursday evening. The pattern of clouds began to look more like a developing tropical cyclone. More thunderstorms formed in bands around the low pressure system. The bands started to revolve around the center of circulation. Storms near the center began to generate upper level divergence that pumped mass away from the low pressure system.

The low pressure system will be in an environment favorable for the development of a tropical cyclone during the next 36 hours. Invest 95B will move over water where the Sea Surface Temperatures are near 29°C. It will move under the middle of an upper level ridge over the Bay of Bengal. The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear. The low pressure system will intensify during the next 36 hours. It is likely to develop into a tropical cyclone.

The low pressure system will move around the southwestern part of a high pressure system over East Asia. The high pressure system will steer Invest 95B toward the northwest during the next 36 hours. On its anticipated track, the low pressure system will move toward the coast of southeast India. It could approach the coast as a tropical cyclone by the end of the weekend.