The shear line - an imaginary line where the hot and cold air converge - will be bringing heavy to intense rainfall over Isabela on Tuesday and in Cagayan on Wednesday, according to the state weather bureau.

The shear line and the Northeast Monsoon (Amihan) will bring rains over parts of Luzon in the next 24 hours, PAGASA said Monday afternoon. In its forecast, the shear line will bring cloudy skies with scattered rains and isolated thunderstorms over Metro Manila,

Two weather systems will continue to bring overcast skies and rains in most parts of Luzon on Monday, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) said. According to state weather specialist Grace Castañeda,

Most areas in Luzon, including Metro Manila, will have scattered rains and isolated thunderstorms due to the shear line, an imaginary line where hot and cold air converge, the Philippine Atmospheric,