Typhoon Inday weakens, but southwest monsoon to trigger significant rain

MANILA, Philippines – Typhoon Inday (Bavi) is steadily weakening, but the enhanced southwest monsoon or habagat is expected to bring significant rainfall to several areas in Luzon, the Visayas, and Mindanao on Friday, July 10.

As of 4 am on Friday, Inday was already 620 kilometers east of Basco, Batanes, moving northwest at 20 kilometers per hour (km/h).

The typhoon’s maximum sustained winds are down to 150 km/h, with gustiness of up to 185 km/h.

The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) still expects Inday to be closest to extreme Northern Luzon between Friday night and Saturday morning, July 11.

The country’s northernmost province of Batanes is seeing moderate to heavy rain (50-100 millimeters) due to Inday on Friday.

During the day, the typhoon may also trigger rain with gusty winds in the Cordillera Administrative Region, Ilocos Norte, Cagayan, and Isabela, as well as scattered rain and thunderstorms in the rest of the Ilocos Region, the rest of Cagayan Valley, Bicol, Central Luzon (except Zambales and Bataan), and Quezon.

Meanwhile, the enhanced southwest monsoon is affecting the rest of Luzon, the Visayas, and Mindanao in varying degrees. The most affected areas in the next three days could be:

Friday, July 10

• Heavy to intense rain (100-200 mm): Occidental Mindoro, Antique
• Moderate to heavy rain (50-100 mm): Zambales, Bataan, Metro Manila, Rizal, Cavite, Laguna, Batangas, Oriental Mindoro, Romblon, Palawan, Aklan, Capiz, Iloilo, Guimaras, Negros Occidental, Negros Oriental, Zamboanga del Sur, Lanao del Norte, Lanao del Sur

Saturday, July 11

• Heavy to intense rain (100-200 mm): Occidental Mindoro, Zambales, Bataan
• Moderate to heavy rain (50-100 mm): La Union, Pangasinan, Benguet, Tarlac, Pampanga, Bulacan, Metro Manila, Rizal, Cavite, Laguna, Batangas, Oriental Mindoro, Romblon, Palawan, Antique, Aklan, Capiz, Iloilo, Guimaras, Negros Occidental

Sunday, July 12

• Heavy to intense rain (100-200 mm): Occidental Mindoro, Zambales, Bataan
• Moderate to heavy rain (50-100 mm): La Union, Pangasinan, Benguet, Tarlac, Pampanga, Bulacan, Metro Manila, Rizal, Cavite, Laguna, Batangas, Oriental Mindoro, Romblon, Palawan, Antique, Aklan

Floods and landslides are likely.

As for winds, the following areas are under tropical cyclone wind signals as of 5 am on Friday:

Signal No. 2

Gale-force winds (62 to 88 km/h), minor to moderate threat to life and property

• Batanes
• eastern part of Babuyan Islands (Babuyan Island, Didicas Island, Camiguin Island)
• northeastern part of mainland Cagayan (Santa Ana)

Signal No. 1

Strong winds (39 to 61 km/h), minimal to minor threat to life and property

• rest of Babuyan Islands
• rest of mainland Cagayan
• Isabela
• Apayao
• northern part of Abra (Tineg, Lagayan, Danglas, San Juan, Lagangilang, Licuan-Baay, Malibcong, Lacub, Daguioman, Dolores, La Paz)
• Kalinga
• eastern part of Mountain Province (Natonin, Paracelis)
• eastern part of Ifugao (Aguinaldo, Alfonso Lista)
• Ilocos Norte

The enhanced southwest monsoon and the periphery or outer bands of the typhoon are also bringing strong to gale-force gusts to these areas:

Friday, July 10, and Saturday, July 11

• most of the country

Sunday, July 12

• most of Luzon, most of Visayas, Zamboanga del Norte, Misamis Occidental, Lanao del Norte, Camiguin, Davao Oriental

On Friday, conditions in certain seaboards remain dangerous due to Inday and the enhanced southwest monsoon.

Up to very rough seas (travel is risky for all vessels)

• Northern and eastern seaboards of Batanes – waves up to 7 meters high
• Seaboards of Babuyan Islands; northeastern seaboard of mainland Cagayan; remaining seaboards of Batanes – waves up to 6 meters high
• Remaining seaboards of mainland Cagayan; seaboard of Isabela – waves up to 5 meters high
• Seaboards of Aurora and Camarines Norte; northern and eastern seaboards of Polillo Islands and Catanduanes; northern seaboards of Ilocos Norte and Camarines Sur – waves up to 4.5 meters high

Up to rough seas (small vessels should not venture out to sea)

• Northern seaboards of mainland Quezon; seaboards of Northern Samar; eastern seaboards of Albay, Sorsogon, and Eastern Samar – waves up to 4 meters high
• Eastern seaboards of Dinagat Islands, Bucas Grande-Siargao Islands, and Surigao del Sur; eastern and southern seaboards of Davao Oriental; remaining seaboards of Catanduanes and Camarines Sur; western seaboard of Ilocos Norte – waves up to 3.5 meters high
• Seaboards of Marinduque, Romblon, Masbate, Caluya Islands, and Kalayaan Islands; western seaboards of Bataan, Occidental Mindoro including Lubang Islands, and Calamian Islands; southern seaboard of Quezon; southern and eastern seaboards of Oriental Mindoro – waves up to 3 meters high

Up to moderate to rough seas (small vessels should take precautionary measures or avoid sailing, if possible)

• Seaboards of Cuyo Islands, Cagayancillo Islands, Antique, Ilocos Sur, Pangasinan, and Zambales; western seaboards of Cavite, Batangas, and Negros Occidental; southern seaboards of Iloilo and Guimaras; remaining seaboards of Camarines Sur, Albay, Sorsogon, and Northern Samar – waves up to 2.5 meters high
• Remaining seaboards of Visayas, Southern Luzon, Surigao del Norte, and Dinagat Islands; seaboards of Camiguin, Misamis Oriental, and Zamboanga del Norte; southern seaboards of Basilan, Sulu, Tawi-Tawi, and Davao Occidental – waves up to 2 meters high

After passing close to extreme Northern Luzon, Inday is projected to move toward Japan’s southern islands, and make landfall in or pass close to Taiwan’s northern coast.

Then the typhoon may exit the Philippine Area of Responsibility (PAR) on Saturday morning or afternoon, followed by another potential landfall in China by Saturday evening or early Sunday morning, July 12. It could weaken into a severe tropical storm over China.

Inday is the Philippines’ ninth tropical cyclone for 2026, and the second for July. The weather bureau earlier said two to four tropical cyclones may form within or enter PAR during the month. – Rappler.com