MANILA— The trough of Super Typhoon Choi-Wan is expected to bring cloudy skies, scattered rains and thunderstorms over parts of the Visayas and Mindanao, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Monday. In its 24-hour public weather forecast issued at 4 a.m. on October 5, PAGASA said the trough of…