MANILA, July 30, 2026 — A Low Pressure Area parked off the coast of Nasugbu, Batangas is bringing widespread cloudy skies, scattered thunderstorms, and a real risk of flash floods and landslides to large parts of Luzon on Thursday, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). The agency issued its 24-hour public weather forecast at 4:00 AM today, valid until 4:00 AM on July 31.
While Mindanao and the Visayas are spared the worst of the disturbance, no region in the country is entirely dry today — localized thunderstorms remain possible across the archipelago.
What Is Driving Today's Weather
The headline system is a Low Pressure Area (LPA), which PAGASA located at 3:00 AM today over the coastal waters of Nasugbu, Batangas, at coordinates 14.1°N, 120.4°E. An LPA is a zone where atmospheric pressure is lower than its surroundings, causing air to rush inward and rise. As that air rises, it cools and condenses into clouds and rain. Because this particular LPA sits close to the coast of southern Luzon, it is funneling moisture and instability directly into the densely populated regions around and north of Manila Bay.
A second, separate driver is at work over northern Luzon: the easterlies. These are steady winds blowing in from the Pacific Ocean to the east, carrying warm, humid air that produces its own round of clouds and rain over Cagayan Valley — independent of the LPA to the south.
For the rest of the country, localized thunderstorms — weather disturbances that build from heat and moisture within a specific area rather than being driven by a large-scale system — are the main concern.
Region-by-Region Forecast
Metro Manila and Nearby Luzon Provinces
Metro Manila, the Ilocos Region, the Cordillera Administrative Region (CAR), Central Luzon, and CALABARZON should all expect cloudy skies with scattered rains and thunderstorms today, all attributed directly to the LPA near Batangas. PAGASA warns that moderate to at times heavy rains from these storms make flash floods and landslides possible. Residents in low-lying communities along rivers and in mountainous parts of the Cordillera and Rizal should be on alert.
Cagayan Valley
The Cagayan Valley region — covering Cagayan, Isabela, Nueva Vizcaya, Quirino, and Batanes — faces cloudy skies with scattered rains and thunderstorms driven by the easterlies rather than the LPA. The hazard is the same: moderate to at times heavy rainfall raises the risk of flash floods and landslides, particularly in the elevated, rain-prone areas of the Cagayan River basin.
Southern Luzon, Visayas, and Mindanao
The rest of the country — which includes Bicol, Eastern Visayas, Western Visayas, Central Visayas, and all of Mindanao — is forecast to have partly cloudy to cloudy skies with isolated rainshowers or thunderstorms due to localized disturbances. While these conditions are less severe than what Luzon is facing, PAGASA notes that flash floods and landslides remain possible if a particularly intense thunderstorm develops in your area. "Isolated" means these storms will not be widespread, but when they do occur, they can be intense and fast-moving.
Wind and Coastal Conditions
Winds across the entire country are forecast to be light to moderate, with direction varying by location:
- Mindanao: South to southwest winds, with slight to moderate coastal waters and wave heights of 0.6 to 2.1 meters.
- Southern Luzon and Visayas: Southwest to southeast winds, with wave heights of 0.6 to 1.8 meters.
- The rest of Luzon: East to southeast winds, with wave heights of 0.6 to 1.5 meters.
While wave heights are within the "slight to moderate" range, conditions near the LPA can shift quickly. PAGASA advises caution on the water, particularly for small vessels operating near southern and central Luzon coastlines.
Understanding the Hazard Warnings
PAGASA has flagged two specific hazards in today's bulletin: flash floods and landslides. These are not abstract risks — they are the direct, life-threatening consequences of moderate to heavy rainfall falling quickly on already-saturated ground, river channels, and steep slopes. In Metro Manila and Central Luzon, flash flooding most often strikes low-lying barangays near esteros and rivers. In the Cordillera, Sierra Madre, and other highland areas, rapidly saturating slopes can trigger landslides with little warning.
There are no active tropical cyclone wind signals or PAGASA rainfall color-coded warnings (yellow, orange, or red) contained in this bulletin. However, the hazard language used — "possible flash floods or landslides due to moderate to at times heavy rains" — should be treated seriously. For a full explanation of what different PAGASA warning levels mean and how to respond, see our guide on how to read PAGASA's weather warnings.
What It Means for You
Commuters in Metro Manila and Luzon
Expect a difficult commute, particularly during morning and afternoon rush hours. Scattered thunderstorms driven by the LPA can produce sudden, heavy downpours that flood underpasses, streets, and low-lying roads with little warning. Leave earlier than usual, check water levels on frequently flooded routes before proceeding, and avoid walking through floodwater of unknown depth.
Fisherfolk and Small Boat Operators
Wave heights of up to 2.1 meters off Mindanao and up to 1.8 meters around the Visayas and southern Luzon coasts are within the manageable range for larger vessels, but small and motorized bancas should exercise caution. Conditions near the LPA in Batangas waters may be choppy and unpredictable. Check in with your local coast guard station before departing, and do not venture out if skies are darkening or thunder is audible.
Farmers
For rice and vegetable farmers in Central Luzon, CALABARZON, and Cagayan Valley, today's rains could be a double-edged situation — welcome irrigation in some areas, but potential crop damage and soil erosion if the heavier bursts hit. Secure loose equipment and materials, and monitor field drainage to avoid waterlogging of root systems.
Students, Parents, and Schools
Parents in Metro Manila, Central Luzon, CALABARZON, and the Cordillera should monitor local government announcements on class suspensions, as flooding can trigger suspensions with short notice. Pack rain gear for children, and have a contingency plan for early pickup if conditions deteriorate rapidly during the school day.
Outdoor Workers and Construction Sites
Workers in exposed outdoor environments — particularly on elevated ground, slopes, or near riverbanks in Luzon — face heightened risk today. Site supervisors should have clear protocols for suspending work and evacuating personnel if thunder is heard or water levels begin to rise. In mountainous areas of CAR and Cagayan Valley, landslide-prone slopes should be monitored closely.
Temperature and Humidity
PAGASA's weather station in Diliman, Quezon City recorded a maximum temperature of 25.4°C (at 5:00 PM yesterday) and a minimum of 24.5°C (at 5:00 AM yesterday) for the 24-hour period ending at 8:00 PM on July 29. Relative humidity was extremely high, reaching 95% maximum and 94% minimum — meaning the air is nearly saturated with moisture. This combination of warm, humid conditions is characteristic of an active wet-season pattern and is consistent with the LPA's influence. Even on breaks between rain showers, the air will feel heavy and uncomfortable outdoors.
Sunrise over Metro Manila today is at 5:39 AM and sunset at 6:26 PM. The moon is at 99% illumination, essentially a full moon, though cloud cover will obscure it for much of tonight.
Bottom Line
If you are in Metro Manila, Central Luzon, CALABARZON, the Cordillera, or Cagayan Valley today — July 30, 2026 — your single most important action is to stay aware of your surroundings and know your evacuation route. The LPA near Batangas is generating real flash flood and landslide potential across Luzon. Do not wait for a warning signal to be raised before taking precautions. Keep your phone charged, monitor your local government's official channels, and never attempt to cross flooded roads or rivers on foot or by vehicle.
Monitor official PAGASA updates at pagasa.dost.gov.ph.