September 27, 2025 – The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) issued its 5:00 AM regional weather forecast today, warning Mindanao residents of possible flooding and landslides as Typhoon “Opong” {international name Bualoi} continues to influence the southwest monsoon.
As of 3:00 AM, the center of Typhoon Opong was located 470 kilometers west of Ambulong, Tanauan City, Batangas (14.1°N, 116.7°E). The typhoon is moving west-northwest at 30 kilometers per hour with maximum sustained winds of 120 km/h near the center and gustiness reaching 150 km/h.
Zamboanga Peninsula at Risk
The Zamboanga Peninsula, including Zamboanga City, Zamboanga del Norte, Zamboanga del Sur, Zamboanga Sibugay, and Isabela City, is expected to experience cloudy skies with scattered rainshowers and thunderstorms throughout the day and night due to the enhanced southwest monsoon. PAGASA warned of possible flash floods and landslides in low-lying and mountainous areas as moderate to heavy rains may occur. Coastal waters will remain slight to moderate, ranging from 0.6 to 1.5 meters.
Daytime temperatures are forecast to range between 22°C and 31°C, slightly cooler than average because of persistent rains.
Northern Mindanao and Caraga: Isolated Thunderstorms
Provinces in Northern Mindanao, including Bukidnon, Camiguin, Lanao del Norte, Misamis Oriental, and Misamis Occidental, as well as Caraga provinces such as Agusan del Norte, Agusan del Sur, Surigao del Norte, Surigao del Sur, and Dinagat Islands, will have partly cloudy to cloudy skies with isolated rainshowers or thunderstorms brought by localized thunderstorms.
Residents are cautioned against sudden heavy downpours that could trigger localized flooding and landslides.
Davao Region and SOCCSKSARGEN
The Davao Region, covering Metro Davao, Davao del Norte, Davao del Sur, Davao Oriental, Davao de Oro, and Davao Occidental, will generally experience partly cloudy to occasionally cloudy skies with rainshowers and thunderstorms. Similar conditions are expected in SOCCSKSARGEN provinces—North Cotabato, South Cotabato, Sultan Kudarat, and Sarangani.
Temperatures may reach up to 33°C in some parts of Davao during fair weather intervals, with evening lows of around 23°C.
BARMM Provinces: Mixed Conditions
The Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) will see varying conditions: Basilan may encounter cloudy skies with rainshowers and thunderstorms, while Lanao del Sur, Maguindanao del Norte, Maguindanao del Sur, Sulu, and Tawi-Tawi are expected to have partly cloudy skies with chances of localized thunderstorms.
Public Advisory
PAGASA urged the public, particularly in areas under the Zamboanga Peninsula and Caraga, to stay alert for possible flash floods, landslides, and sudden severe thunderstorms. Fisherfolk and those with small sea crafts are advised to take precautionary measures as seas, while slight to moderate, may become rough during thunderstorms.
The public is advised to continue monitoring weather bulletins through PAGASA’s official website at bagong.pagasa.dost.gov.ph or through hotline numbers (632) 8922-1992 and 8927-1335 for further updates.