GENERAL SANTOS CITY, Philippines — Residents across Mindanao should prepare for another day of unsettled weather on Friday, November 13, as the easterlies are expected to bring cloudy skies, scattered rainshowers, and thunderstorms over Caraga and the Davao Region, while other parts of the island will experience partly cloudy to cloudy conditions with isolated rainshowers or thunderstorms.
In its Regional Weather Forecast issued at 5:00 a.m. on November 13, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) Mindanao station (MINPRSD) warned that moderate to, at times, heavy rainfall over Caraga and Davao Region could trigger flash floods or landslides, particularly in areas vulnerable to flooding and rain-induced slope instability.
The forecast covers the 24-hour period from 5:00 a.m. Friday until 5:00 a.m. Saturday, November 14.
The weather disturbance is associated with the easterlies, or the prevailing winds bringing warm and humid air from the Pacific Ocean toward the eastern sections of the country. These conditions are expected to sustain cloudiness and rain-producing weather systems, particularly over eastern Mindanao.
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Caraga and Davao Region face higher rainfall risks
Among Mindanao’s regions, Caraga and Davao are expected to experience the more persistent rainy conditions, with cloudy skies accompanied by scattered rainshowers and thunderstorms throughout the forecast period.
In Caraga, the provinces of Agusan del Norte, Agusan del Sur, Surigao del Norte, Surigao del Sur, and Dinagat Islands are all forecast to experience cloudy skies with rainshowers and thunderstorms.
Temperatures in Agusan del Norte are expected to range from 23°C to 34°C, while Agusan del Sur will have cooler conditions at 23°C to 31°C. Surigao del Norte is forecast to register temperatures between 25°C and 32°C, Surigao del Sur between 24°C and 31°C, and Dinagat Islands between 25°C and 33°C.
In the Davao Region, Metro Davao, Davao del Norte, Davao del Sur, Davao Oriental, Davao de Oro, and Davao Occidental are likewise expected to experience cloudy skies with rainshowers and thunderstorms.
Metro Davao is forecast to have temperatures ranging from 24°C to 33°C. Davao del Norte and Davao del Sur will experience temperatures of 23°C to 33°C, while Davao Oriental is also expected to register 24°C to 33°C.
Davao de Oro will have temperatures ranging from 23°C to 31°C, while Davao Occidental is forecast to experience 24°C to 32°C.
The possibility of moderate to occasionally heavy rainfall makes these areas particularly important to monitor, especially communities near rivers, waterways, steep slopes, and locations with a history of flooding and landslides.
Rest of Mindanao to experience isolated rainshowers and thunderstorms
Outside Caraga and Davao, the rest of Mindanao will generally experience partly cloudy to cloudy skies, with isolated rainshowers or thunderstorms also associated with the easterlies.
In the Zamboanga Peninsula, Zamboanga City is forecast to experience temperatures between 25°C and 35°C. Zamboanga del Norte will have temperatures of 26°C to 34°C, Zamboanga del Sur 23°C to 32°C, and Zamboanga Sibugay 24°C to 33°C. Isabela City is expected to register 26°C to 35°C.
Northern Mindanao will also experience partly cloudy to at times cloudy conditions with rainshowers or thunderstorms. Bukidnon is forecast to have the coolest temperature range in the region, at 21°C to 32°C, while Camiguin will experience 25°C to 32°C.
Lanao del Norte is expected to register 25°C to 32°C, Misamis Occidental 25°C to 33°C, and Misamis Oriental 25°C to 32°C.
Across SOCCSKSARGEN, North Cotabato is forecast to experience temperatures ranging from 23°C to 33°C. South Cotabato will have 25°C to 34°C, Sultan Kudarat 24°C to 33°C, and Sarangani 24°C to 34°C. Partly cloudy to at times cloudy skies with isolated rainshowers or thunderstorms are expected in these provinces.
BARMM provinces also likely to experience rainshowers
The Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) will generally experience partly cloudy to at times cloudy skies, with isolated rainshowers or thunderstorms.
Cotabato City is forecast to have temperatures between 24°C and 34°C, while Basilan will experience 26°C to 35°C. Lanao del Sur is expected to register 20°C to 31°C, making it among the cooler areas across Mindanao.
Sulu will have temperatures ranging from 25°C to 33°C, while Tawi-Tawi is forecast to experience 26°C to 31°C. Maguindanao del Norte will register 24°C to 34°C, while Maguindanao del Sur is expected to experience 24°C to 35°C.
Although rainfall in these areas is expected to be more isolated compared with Caraga and Davao, PAGASA cautioned that severe thunderstorms could still trigger flash floods or landslides.
Light to moderate winds, generally slight to moderate seas
PAGASA also forecast light to moderate winds blowing from the northeast to east across Mindanao, with coastal waters generally expected to remain slight to moderate.
Sea conditions are forecast to range from 0.6 to 2.5 meters during the 24-hour forecast period.
While these conditions are generally less hazardous than those associated with stronger wind systems, fishermen, small boat operators, and other maritime stakeholders are advised to remain attentive to changing weather conditions, particularly during thunderstorms.
Residents urged to remain alert for flooding and landslides
The forecast highlights the continuing need for precautionary measures, particularly in communities exposed to flooding, overflowing rivers, and landslides.
Residents in low-lying and flood-prone areas should monitor water levels and remain alert for sudden rises in rivers and waterways. Those living near hillsides and mountainous terrain should also watch for signs of possible landslides, especially after prolonged or heavy rainfall.
Motorists are advised to exercise caution on roads with poor drainage, reduced visibility, or slippery surfaces during rainshowers and thunderstorms. Fisherfolk and coastal communities should likewise monitor local weather advisories before undertaking sea travel.
PAGASA emphasized that severe thunderstorms may produce localized hazards even in areas where rainfall is not expected to be widespread.