“OPONG” Tropical Storm Updated as of 0500HRS 24-Sep-2025



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“OPONG” INTENSIFIES INTO A TROPICAL STORM

Location of eye/center : The center of the eye was estimated based on all available data at 855 km East of Northeastern Mindanao (09.8, 133.3). Strength : Maximum winds of 65 kph near the center and gustiness of up to 80 kph. Forecast movement : Forecast to move West Southwestward at 20 kph

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Forecast position : 

Sep 24, 2025 02:00 PM - 780 km East of Surigao City, Surigao del Norte Sep 25, 2025 02:00 AM - 560 km East of Guiuan, Eastern Samar Sep 25, 2025 02:00 PM - 365 km East Northeast of Guiuan, Eastern Samar Sep 26, 2025 02:00 AM - 250 km East of Catarman, Northern Samar Sep 26, 2025 02:00 PM - Over the coastal waters of Bato, Catanduanes Sep 27, 2025 02:00 AM - In the vicinity of San Nicolas, Batangas Sep 28, 2025 02:00 AM - 600 km West of Iba, Zambales (OUTSIDE PAR) Sep 29, 2025 02:00 AM - 1,245 km West of Northern Luzon (OUTSIDE PAR)

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HAZARDS AFFECTING LAND AREAS Heavy Rainfall Outlook

OPONG is less likely to directly affect the weather condition of the country in the next 24 hours. Onset of heavy rains due to OPONG is possible by tomorrow (25 September) onwards. For more information, refer to Weather Advisory No. 19 issued at 5:00 AM today.

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 Coastal Inundation

There is a potential risk of coastal flooding due to storm surge in low-lying coastal areas of Southern Luzon and Eastern Visayas due to the passage of OPONG. Storm surge warning may be issued starting today or tomorrow (25 September).

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TRACK AND INTENSITY OUTLOOK

OPONG is forecast to begin moving west northwestward while approaching Eastern Visayas – Southern Luzon area. On the forecast track, OPONG may make landfall over Bicol Region by Friday (26 September) afternoon and is expected to cross the Southern Luzon area from Friday afternoon until Saturday (27 September) morning. It may exit the Philippine Area of Responsibility by Saturday evening or Sunday (28 September) morning. It must be emphasized that heavy rainfall, severe winds, and storm surge may still be experienced in localities outside the landfall point and the forecast confidence cone. Refer to “Other Hazards affecting Land Areas” for more details. Furthermore, the track may still shift within the limit of the forecast confidence cone. OPONG will continue to intensify over the Philippine Sea and may reach severe tropical storm category by tomorrow (25 September) evening. Further intensification, especially after the passage over the Philippine landmass, is not ruled out.

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Forecast Position

  • Sep 24, 2025 02:00 PM - 780 km East of Surigao City, Surigao del Norte

  • Sep 25, 2025 02:00 AM - 560 km East of Guiuan, Eastern Samar

  • Sep 25, 2025 02:00 PM - 365 km East Northeast of Guiuan, Eastern Samar

  • Sep 26, 2025 02:00 AM - 250 km East of Catarman, Northern Samar

  • Sep 26, 2025 02:00 PM - Over the coastal waters of Bato, Catanduanes

  • Sep 27, 2025 02:00 AM - In the vicinity of San Nicolas, Batangas

  • Sep 28, 2025 02:00 AM - 600 km West of Iba, Zambales (OUTSIDE PAR)

  • Sep 29, 2025 02:00 AM - 1,245 km West of Northern Luzon (OUTSIDE PAR)                                                         

Source: PAGASA