To: 639163047000 Type: Auto bId: rId: ID: 30963 [WEATHER UPDATE] Issued at 4:00 PM, 21 December 2023 SYNOPSIS: Shear Line affecting the eastern section of Northern Luzon. Northeast Monsoon affecting the rest of Northern Luzon. Forecast Weather Condition Cagayan, Isabela, Apayao, Aurora, Northern portion of Quezon, and Kalayaan Islands: Cloudy skies with scattered rainshowers and thunderstorms, Shear Line / Trough of LPA, Possible flash floods or landslides due to moderate to heavy rains The rest of Cordillera Administrative Region and the rest of Cagayan Valley: Cloudy skies with rains, Northeast Monsoon Possible flash floods or landslides due to moderate to at times heavy rains, Ilocos Region: Partly cloudy to cloudy skies with isolated light rains Northeast Monsoon, No significant impact, Metro Manila and the rest of the country: Partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, Easterlies / Localized Thunderstorms, Possible flash floods or landslides during severe thunderstorms