MANILA, Philippines — Four weather systems are forecast to bring rains across the country on Wednesday, according to the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (Pagasa). In its 5 p.m. weather forecast, Pagasa said that the shear line, or the convergence of warm and cold winds, will prevail over the northeastern part of Luzon while the northeast monsoon, or amihan, will affect the western section of Northern and Central Luzon.  “The influence of the shear line will continue, that’s why the northeastern part of Luzon will experience chances of rain in the next two to three days,” Pagasa weather […]... Keep on reading: Rains expected nationwide as four weather systems affect PH