Tropical Depression "Ferdie" has merged with a low pressure area over the West Philippine Sea after it crossed the Balintang channel between the Babuyan and Batanes islands, the weather bureau said.
In its report, the Philippine Atmospheric, Geophysical and Astronomical Services, Ferdie has sustained winds of 55 kilometers per hour (kph) and is expected to move west at 15 kph.
It is expected to leave the "Philippine Area of Responsibility" by Saturday night.
Public Storm Signal Warning 1 is still up over Ilocos Norte, Ilocos Sur, and Abra. Pagasa expects heavy to intense rains in the area.
Residents in low-lying and mountainous areas should also watch out for flashfloods and landslides because of the rain, Pagasa said.
Fishing boats and other small craft have also been advised to avoid sailing in the western seaboard of Luzon.
Pagasa said on its Twitter account that Quezon City experienced 9.0 millimeters of rain from 10 a.m. to 11 a.m. Rainfall in Pasig was at 9mm while rainfall at La Mesa was 12mm. Pagasa said Marikina City had 8.5mm of rain while North Caloocan had 10.5mm of rain.
According to a radio report, Marikina City has raised its flood warning to first alarm after water on the Marikina River breached 15 meters. Marikina Mayor Del de Guzman said over dzMM that the city will keep watching the water level but expected it to go down soon.
Heavy rain prompted colleges and universities in Manila to cancel classes as residents remained wary of flooding.
De La Salle University and Ateneo De Manila University have both announced class suspensions, as have San Beda College and Far Eastern University. FEU has suspended classes in its Manila, Makati, and East Asia College campuses.
Mapua Institute of technology and Polytechnic University of the Philippines have also called off classes.
Adamson University, University of Santo Tomas, University of Asia and the Pacific, and St Scholastica's College have also suspended classes because of the rain.
Classes in Arellano University, Technological University of the Philippines, and Technological Institute of the Philippines have likewise been suspended.