According to the Marikina City Public Information Office (PIO), the river reached 16.0 meters at 1:50 p.m. and further rose to 16.1 meters at 2:08 p.m.

Earlier in the day, the river was recorded at 14.9 meters at 12:07 p.m. It rose to 15 meters at 12:17 p.m., prompting authorities to raise the alert to the first alarm.

Under the second alarm, residents in affected areas are advised to evacuate as a precaution, although evacuation is not yet mandatory.

The continued rise in the river level comes as the southwest monsoon persists, bringing heavy rains over parts of Luzon.