While tracking towards the north-northeast, the storm began to gradually weaken as a result of increasing southwesterly wind shear and colder sea surface temperatures. At about 1200 UTC on September 2, Isaac was downgraded to a tropical storm.
While heading north-northeast, the storm began to gradually diminish due to increasing southwesterly wind shear and colder sea surface temperatures. At approximately 1200 UTC on September 2, Isaac was downgraded to a tropical storm.