QUEZON CITY, June 19, 2026 — The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has placed virtually the entire country under a thunderstorm advisory for Friday, warning that intense rain episodes could set off dangerous flash floods and landslides from the northern tip of Luzon all the way down to the southernmost reaches of Mindanao.
In its early-morning weather bulletin released at 4:00 AM on June 19, 2026, PAGASA identified the easterlies — warm, moisture-heavy winds blowing in from the Pacific Ocean — as the dominant weather system currently affecting Central Luzon, Southern Luzon, and the Visayas. Localized convective activity, or thunderstorm development, is responsible for the unsettled conditions in the remaining parts of the country not directly under the easterly influence.
The weather forecast covers a 24-hour window beginning at 4:00 AM Friday, June 19, and running through 4:00 AM Saturday, June 20, 2026.
No Tropical Cyclone in the PAR
PAGASA confirmed in its bulletin that no tropical cyclone is currently present within or approaching the Philippine Area of Responsibility (PAR). Despite the absence of a named storm, the interplay between the easterly wind flow and localized convective systems is more than enough to produce widespread cloudiness, periodic rain, and thunderstorm outbreaks across virtually all regions of the archipelago throughout the day.
Residents, commuters, and travelers nationwide are advised to prepare for intermittent showers and the possibility of sudden heavy downpours that could disrupt outdoor activities, delay transportation, and temporarily reduce road visibility.
Metro Manila and Surrounding Provinces
The National Capital Region is forecast to have partly cloudy to cloudy skies with isolated rainshowers or thunderstorms for most of the day, according to PAGASA. Metro Manila residents are encouraged to bring an umbrella or raincoat and to be extra careful in flood-prone, low-lying urban areas during heavy rain spells.
Wind direction over Luzon will be from the east to southeast at light to moderate speeds. PAGASA's Science Garden monitoring station in Diliman, Quezon City recorded the previous day's peak temperature at 34.2°C at 11:00 AM and the overnight low at 25.2°C at 6:00 AM, with relative humidity fluctuating between 46% and 89% — conditions that reflect the warm, muggy character of the June easterly season.
Central Luzon, encompassing Bulacan, Pampanga, Tarlac, Nueva Ecija, Bataan, and Zambales, as well as CALABARZON — covering Cavite, Laguna, Batangas, Rizal, and Quezon — will likewise experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms driven by the easterlies. PAGASA cautioned that communities situated along riverbanks or at the base of hills in these provinces should remain on alert for flash flooding and landslides if thunderstorms intensify.
MIMAROPA and Bicol
The island group of MIMAROPA — which includes Mindoro, Marinduque, Romblon, and Palawan — falls under the same easterly-influenced weather pattern, with partly cloudy to cloudy skies and isolated rainshowers or thunderstorms expected. Residents of coastal and interior mountain communities in Palawan and Mindoro are urged to stay vigilant during extended or heavy rainfall bouts.
The Bicol Region — consisting of Camarines Norte, Camarines Sur, Albay, Sorsogon, Masbate, and Catanduanes — is also within the easterly forecast zone, according to PAGASA. Residents in low-lying areas and those living near the slopes of the region's volcanic mountains and major river systems are strongly advised to follow weather updates throughout the day, given the area's heightened exposure to flooding and landslides.
Northern Luzon
Regions in the northern part of Luzon not individually enumerated in the PAGASA bulletin — including the Ilocos Region, Cagayan Valley, the Cordillera Administrative Region (CAR), and Aurora — are covered under the general nationwide forecast of partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, attributable this time to localized thunderstorm formation rather than the easterlies. PAGASA noted that the mountainous terrain of the Cordillera significantly amplifies the risk of landslides even during moderate rain events.
Visayas: Easterlies Bring Showers and Choppy Coastal Waters
All three Visayas subregions — Western, Central, and Eastern Visayas — are under the direct influence of the easterlies and are forecast to experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms, PAGASA said in its bulletin.
Winds over the Visayas will blow from the east to northeast at light to moderate intensity. Coastal wave heights in Visayan waters are forecast at 0.6 to 1.2 meters, classified as slight to moderate. PAGASA warned that small watercraft — particularly bancas and outrigger boats — should stay near shore and exercise caution, as thunderstorm episodes can rapidly whip up stronger gusts and choppier seas with very little lead time.
Flash floods and landslides remain a significant concern in the hilly and mountainous interior areas of Visayan provinces, particularly in Leyte, Samar, Negros, Cebu, and Panay, during severe thunderstorm events.
Mindanao: Localized Storms Bring Similar Risks
Unlike the northern and central island groups, Mindanao's unsettled weather on Friday is driven not by the easterlies but by localized thunderstorm activity, PAGASA explained. The region will nonetheless share a similar forecast of partly cloudy to cloudy skies with isolated rainshowers or thunderstorms.
Winds over Mindanao are expected to blow from the northeast to northwest at light to moderate speeds — a slightly different wind profile compared to the rest of the country. Wave heights in waters surrounding Mindanao, including the Sulu Sea and adjacent straits, are also pegged at 0.6 to 1.2 meters.
Flash floods and landslides pose a risk across Mindanao's mountainous interior and major river basins, including communities in the Davao Region, Caraga Region, BARMM, and both Northern and Southern Mindanao zones, particularly if thunderstorms are prolonged or severe.
Marine and Coastal Advisories
PAGASA noted that wind conditions across all three major island groups are classified as light to moderate and do not present a broad navigational threat under ordinary circumstances. However, the agency stressed that severe thunderstorms are capable of producing sudden, strong gusts and elevated local wave heights that could pose real danger to small vessels.
Wave heights of 0.6 to 1.2 meters are forecast for coastal waters nationwide. Fishermen and maritime workers are advised by PAGASA to closely monitor local weather bulletins before departing for sea, and to return to port or shore immediately if threatening weather develops.
Manila Bay Tidal Data
According to tidal predictions provided by the National Mapping and Resource Information Authority (NAMRIA), Manila Bay will reach a high tide of 1.42 meters at 12:44 PM and a low tide of -0.09 meters at 9:24 PM on June 19. NAMRIA's data was cited in the PAGASA bulletin as a reference for coastal barangays along Manila Bay, which should be especially watchful during these tidal peaks — more so if accompanied by heavy local rainfall that could worsen coastal flooding.
Sunrise, Sunset, and Moon Phase for Metro Manila
Metro Manila will see sunrise at 5:28 AM and sunset at 6:27 PM today. The moon will rise at 9:32 AM and set at 10:25 PM, with a lunar illumination of just 25%, placing it in a waxing crescent phase that will offer very limited natural light after dark.
Safety Reminders from PAGASA
PAGASA specifically highlighted the elevated risk of flash floods and landslides as key hazards during severe thunderstorm events across all regions. The agency urged the following groups to exercise heightened caution throughout the day:
- Households and communities situated in low-lying areas near rivers, creeks, and drainage channels
- Residents living on hillsides, steep slopes, or at the base of mountain foothills
- Motorists crossing flood-prone roads and bridges during or after heavy downpours
- Fishermen, ferry passengers, and maritime workers operating in coastal and open waters
- Farmers and outdoor workers in areas prone to sudden, intense thunderstorms
The public is reminded to heed all weather advisories and to follow instructions from local government units and disaster risk reduction authorities if conditions deteriorate in their area. PAGASA updates its weather bulletins multiple times daily and encourages everyone to check for the latest information before making travel or outdoor work decisions.
Originally reported by: PAGASA / Philippine News Agency