MANILA – The trough of a low-pressure area (LPA) will bring cloudy skies with scattered rains and thunderstorms over parts of Southern Luzon and the Visayas on Saturday, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said. In its 4 a.m. weather bulletin, PAGASA said the LPA was estimated at 3 a.m. to be…