On 16 September 2023, partly cloudy to cloudy skies with isolated rain showers or thunderstorms due to Southwest Monsoon/Localized Thunderstorms may have caused possible flash floods or landslides during severe thunderstorms to Metro Manila and the rest of the country.

On the same day, several barangays in Tantangan, South Cotabato experienced flash floods due to continuous heavy rainfall brought by localized thunderstorms.

Source: DOST-PAGASA Daily Weather Bulletin and DSWD Field Office (FO) XII

II. Status of Affected Areas and Population

A total of 1,451 families or 7,255 persons are affected in Tantangan, South Cotabato (see Table 1).