Thursday, 30 July 2009
140 degrees longitude
Nearly halfway round the globe, and this so-called African tropical wave has spawned a tropical cyclone. African waves are pulses of moist air, which move off the African continent in the summer months, into the Atlantic Ocean. They are the focal point for hurricanes to form in the Atlantic. However, the one that gave rise to tropical depression 6E travelled nearly halfway around the world. Within the hour, the Central Pacific Hurricane Center in Honolulu, Hawaii, will issue the second advisory, and it is likely to be for a tropical storm. Satellite images suggest that the system will continue to strengthen for a day or so. It will not directly affect Hawaii, passing 5 degrees of latitude to the south of the Aloha state.
The image shows 6E in the bottom right corner; Hawaii sits in the centre.