Large masses of powerful convective clouds are also present around the system, and the typhoon is expected to grow substantially as it absorbs them. The storm is forecast to become strong enough to generate violent winds by the night of July 29. Forecast uncertainty remains relatively limited through August 1, resulting in a comparatively narrow forecast cone. The Pacific high-pressure system is forecast to extend broadly east of the typhoon, while a trough of low pressure is expected farther east. 13 does not directly approach or make landfall in Japan, its expected development into a violent storm could produce significant effects over a wide area.