Benguet and Other Areas Under Signal No. 1 as Tropical Depression Isang Makes Landfall in Aurora

UPDATE May 13, 2026 11:17 AM:

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Tropical Depression Isang developed from the low pressure area east of Aurora and made landfall in Casiguran at 10:00 AM today, August 22, 2025. Signal No. 1 is now raised in several provinces of Northern and Central Luzon, including Benguet.
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The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) reported that the Low Pressure Area (LPA 08e) east of Aurora has developed into Tropical Depression Isang. At 10:00 AM, the center of Isang was located in the vicinity of Casiguran, Aurora with maximum sustained winds of 55 km/h near the center, gustiness of up to 90 km/h, and a central pressure of 1002 hPa. It is currently moving westward at 15 km/h.

Track and Intensity Outlook

Tropical Depression Isang is forecast to traverse Northern Luzon within the next 12 hours, then emerge over the West Philippine Sea tonight. It is expected to exit the Philippine Area of Responsibility (PAR) by tomorrow morning or afternoon (23 August).

• Isang is projected to intensify into a tropical storm by Saturday morning and may reach severe tropical storm category while moving toward the waters south of Hainan, China.
• Earlier intensification into a tropical storm after emerging over the West Philippine Sea is possible.

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Hazards Affecting Land Areas

Tropical Cyclone Wind Signals

Signal No. 1 (Strong winds: 39–61 km/h, lead time 36 hours, minimal to minor impacts):

• Batanes
• Cagayan
• Isabela
• Quirino
• Nueva Vizcaya
• Apayao
• Kalinga
• Abra
• Mountain Province
• Ifugao
• Benguet
• Ilocos Norte
• Ilocos Sur
• La Union
• Pangasinan
• Casiguran, Aurora
• Dinalungan, Aurora
• Dilasag, Aurora
• Baler, Aurora
• Maria Aurora, Aurora
• Dipaculao, Aurora
• San Luis, Aurora
• Lupao, Nueva Ecija
• Carranglan, Nueva Ecija
• Pantabangan, Nueva Ecija
• San Jose City, Nueva Ecija

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Severe Winds

• Minimal to minor impacts from strong winds possible within areas under Signal No. 1.
• Local winds may be stronger in coastal and upland/mountainous areas exposed to the prevailing wind direction.

Southwest Monsoon Winds Enhanced by Isang

• Today (Aug 22): Aurora (non-signal areas), Zambales, Bataan, Metro Manila, CALABARZON, MIMAROPA, Camarines Norte, Camarines Sur, Catanduanes, Burias Island, Western Visayas, Negros Island Region, Central Visayas, Dinagat Islands, Southern Leyte, Surigao del Norte, Camiguin.
• Tomorrow (Aug 23): Batanes, Cagayan, Ilocos Region, Cordillera Administrative Region, Zambales, Bataan, Tarlac, Pampanga, Bulacan, Metro Manila, Cavite, Rizal, Palawan, Occidental Mindoro, Romblon, Burias Island, Camarines Sur.
• Sunday (Aug 24): Kalayaan Islands.

Heavy Rainfall Outlook

Refer to PAGASA’s Weather Advisory No. 4 (11:00 AM, August 22) for details on rainfall due to Isang and the Southwest Monsoon.

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Hazards Affecting Coastal Waters

• Rough seas up to 3.0 m: seaboards of Batanes and Cagayan. Mariners of small seacraft are advised not to venture out to sea.
• Moderate seas up to 2.5 m: seaboards of Isabela, Ilocos Norte, and Ilocos Sur.
• Moderate seas up to 2.0 m: seaboard of Aurora and Zambales; western seaboards of Bataan and Lubang Island.

Public Advisory

PAGASA urges the public and disaster risk reduction offices to take precautionary measures against floods, landslides, mudslides, and strong winds. Residents in high-risk areas are advised to follow evacuation orders and other instructions from local officials.

The next Tropical Cyclone Bulletin for Tropical Depression Isang will be issued at 2:00 PM today (22 August 2025).

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For more information, see our complete guide on 10 Things You Can Do to Keep Your Cool This Summer.