 A weak circulation formed near Kwajalein on August 5. Over the next couple days, the low moved northwest. Slowly developing, it became a tropical depression on the morning of August 9, and a tropical storm by evening. Becoming a typhoon on August 11, Dot moved westward under the base of the subtropical ridge. By August 12, Cecil's outflow began to impact Dot, and weakening ensued, sending Dot back to the tropical storm stage. As Cecil's influence began to lessen on August 13, Dot stopped weakening. As a tropical storm, Dot rapidly passed over Taiwan on August 15, rapidly weakening over the mountainous island. As a weak tropical storm, Dot dissipated after making landfall in eastern China. As of 2005, Dot is the eighth wettest known typhoon for Hong Kong. It dropped 491.7 millimetres (19.36 in) of rainfall upon the region.
