Published July 21, 2021, 11:52 AM (PAGASA) The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Wednesday morning, July 21, warned residents living near the Pasig, Marikina, and Tullahan rivers to take precaution against possible flooding due to rains triggered by the southwest monsoon or “habagat.” PAGASA issued a flood advisory for Pasig, Marikina, Tullahan rivers and their tributaries, particularly in the following areas: Upper Marikina River – Rodriguez, Antipolo, and San Mateo, Rizal; Quezon City; and Marikina City Lower Marikina River – Pasig City and Mandaluyong City Pasig River – Pasig City, Makati City, Mandaluyong City, and Manila City Tullahan River – Quezon City, Caloocan City, Malabon City, Navotas City, and Valenzuela City