The system's shadow reaches ahead of its arrival
As one weather system quietly departed Philippine waters in the early hours of Tuesday, another was already gathering strength far out in the Pacific — a reminder that the archipelago's wet season rarely offers pause between threats. By morning, PAGASA had confirmed the second low pressure area had intensified into a tropical depression some 2,230 kilometers east of Eastern Visayas, with its outer reach already beginning to darken skies over Mindanao. The system, expected to enter the Philippine Area of Responsibility by Thursday under the name Ferdie, arrives at a moment when the southwest monsoon still holds sway — a convergence that meteorologists warn could amplify rainfall across a much wider portion of the country.
- A tropical depression has formed far out in the Pacific and is moving steadily toward Philippine waters, with landfall into PAR expected as early as Thursday.
- Even before arrival, the system's outer bands are already pushing rain and thunderstorms into Caraga and the Davao Region, threatening flash floods and landslides within 24 hours.
- The first low pressure area that had kept forecasters watchful quietly exited Philippine waters overnight, offering only a brief reprieve before the next system emerged.
- PAGASA has urged residents in vulnerable southern regions to prepare now, as saturated terrain in Mindanao heightens the risk of rapid ground instability.
- Meteorologists warn that once Ferdie enters PAR, it may amplify the southwest monsoon, spreading heavier rainfall well beyond Mindanao later in the week.
The Philippine weather bureau's Tuesday began with a quiet exit and an urgent arrival. The first low pressure area it had been tracking slipped out of the country's area of responsibility around midnight, last seen 710 kilometers northeast of Batanes and posing no danger. But a second system had already taken its place in the forecasters' attention.
By 8 am on September 10, that second system had intensified into a tropical depression, sitting 2,230 kilometers east of Eastern Visayas. PAGASA Weather Specialist Veronica Torres said it was expected to enter the Philippine Area of Responsibility between September 12 and 13, at which point it would be named Ferdie.
The country would not need to wait for its arrival to feel the effects. The depression's outer bands were already extending westward, and Caraga and the Davao Region were forecast to see scattered rain and thunderstorms within 24 hours. PAGASA cautioned residents in both areas to brace for possible flash floods and landslides, particularly given terrain already softened by weeks of wet season rainfall.
The broader concern was what Ferdie might do once it drew closer. Arriving at the tail end of the southwest monsoon season, the system risked amplifying the monsoon's reach, potentially spreading heavier rainfall across a wider stretch of the archipelago by week's end. For the moment, most of the Philippines would see relatively clear skies — but the window of calm, forecasters made clear, would be brief.
The first weather system being tracked by the Philippine weather bureau slipped out of the country's area of responsibility early Tuesday morning, but a second one was already taking its place. By mid-afternoon on September 10, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration confirmed that the initial low pressure area had crossed beyond Philippine waters around midnight, positioning itself 710 kilometers northeast of Itbayat in Batanes. It posed no threat to the country.
The second system, however, told a different story. Located 2,230 kilometers east of the Eastern Visayas, it had intensified into a tropical depression by 8 am that same morning. PAGASA Weather Specialist Veronica Torres indicated the system would likely enter the Philippine Area of Responsibility sometime between Thursday, September 12, and Friday, September 13. Once it does, it will carry the local name Ferdie.
But the country would not have to wait for the system to arrive to feel its effects. The outer bands and trough of the tropical depression were already beginning to influence weather patterns across the southern Philippines. Caraga and the Davao Region were forecast to experience scattered rain and thunderstorms within the next 24 hours as the system's extension pushed westward. The weather bureau issued a cautionary note for both regions, warning residents to prepare for possible flash floods and landslides as moisture-laden winds brought rain to already saturated terrain.
The timing of this second system coincided with the tail end of the southwest monsoon season, which had been affecting much of the archipelago. As the tropical depression moved closer to Philippine waters, meteorologists anticipated it could amplify the monsoon's effects, potentially intensifying rainfall across a broader swath of the country later in the week. For the remainder of Tuesday and into Wednesday, most of the Philippines would experience generally clear skies, though isolated showers and thunderstorms remained possible in areas influenced by the southwest monsoon winds.
The sequence of two systems—one departing, one arriving—underscored the dynamic nature of the tropical Pacific during the tail end of the wet season. While the first posed minimal risk, the second represented a more tangible concern, particularly for the vulnerable regions of Mindanao where terrain and weather patterns converge to create conditions ripe for flooding and ground instability.
Citas Notables
The tropical depression could enter PAR on Thursday, September 12, or Friday, September 13— PAGASA Weather Specialist Veronica Torres
La Conversación del Hearth Otra perspectiva de la historia
Why does it matter that the first system left but a second one is coming? Aren't these weather events routine?
They are routine in the sense that the Philippines sits in a typhoon belt, but the timing matters. Two systems in close succession means the atmosphere is primed for moisture and instability. The second one hasn't even arrived yet, but its outer bands are already triggering rain in Mindanao.
So Caraga and Davao are at risk before the system officially enters Philippine waters?
Exactly. The trough—the extension of the system—reaches out ahead of the main circulation. It's like the shadow of something approaching. Rain starts falling days before the center arrives.
What happens if the tropical depression enhances the southwest monsoon?
The monsoon is already bringing moisture from the southwest. If the tropical depression amplifies it, you get a compounding effect—heavier, more persistent rain across a wider area. That's when flash floods become more likely.
Why is Mindanao specifically vulnerable?
Terrain. The region has steep slopes and valleys where water concentrates quickly. Add heavy rain to that geography, and you get rapid runoff. Landslides follow when soil becomes saturated.
When will people know if Ferdie poses a real threat?
By Thursday or Friday when it enters PAR. That's when PAGASA will have better data on its exact track and intensity. Right now, it's still far enough out that forecasts have uncertainty.