PAGASA has issued a yellow rainfall warning for the provinces of Apayao and Cagayan as a shear line sweeps across northern Luzon.
This weather system — formed where cold winds from the northeast monsoon (amihan) meet warm easterlies — is expected to bring moderate to heavy rain as it moves in.
Residents in low‑lying or flood-prone areas are urged to stay alert. The forecast warns of possible flash floods and landslides, especially in mountainous zones.
Local disaster response teams and communities are advised to prepare accordingly and monitor updates from weather authorities.