MANILA (2nd UPDATE) - Seven areas remained under the 2nd highest tropical cyclone warning signal Saturday dawn, as Typhoon Ompong (international name Mangkhut) made landfall in Cagayan.

State weather bureau PAGASA placed Cagayan, northern Isabela, Ilocos Norte, Apayao, Abra, Kalinga, and Babuyan group of Islands under tropical cyclone warning signal no. 4. Winds of 171 kph to 220 kph are expected to be felt in the areas in the next 12 hours.

Ompong made landfall in Baggao, Cagayan at 1:40 a.m., PAGASA weather specialist Chris Perez said.

• Ompong to make landfall earlier than expected: PAGASA

The strongest typhoon to hit the Philippines this year, Ompong continues to pack maximum sustained winds of 205 kph and gusts of up to 285 kph.

The typhoon also increased its speed, moving west-northwest at 35 kph.

• How destructive is storm signal number 4?

The typhoon is not expected to raise cyclone warning signal number 5, PAGASA earlier said.

"'Yung signal number 5 wala nang tiyansa kasi malapit na sa landmass ito, nagkaroon na ng frictional effect iyong kalupaan, lalo na yung bundok ng Sierra Madre, dun sa outer spiral niya tumatama na eh so ibig sabihin nun talaga hindi na siya lalakas pa," said Rene Paciente, PAGASA Assistant Weather Services chief.

The following tropical cyclone warning signals are hoisted over the following areas:

SIGNAL NO. 3

- Batanes
- Ilocos Sur
- La Union
- Mountain Province
- Benguet
- Ifugao
- Nueva Vizcaya
- Quirino
- Northern Aurora
- Southern Isabela

SIGNAL NO. 2

- Pangasinan
- Tarlac
- Nueva Ecija
- Southern Aurora
- Zambales
- Pampanga
- Bulacan
- Northern Quezon including Polillo Island

SIGNAL NO. 1

- Bataan
- Rizal
- Metro Manila
- Cavite
- Batangas
- Laguna
- Rest of Quezon
- Lubang Island
- Marinduque
- Camarines Norte
- Camarines Sur
- Catanduanes
- Albay
- Burias Island

Storm surges of up to 6 meters above mean sea level are possible along coastal areas in Cagayan and Ilocos Norte early Saturday morning, while storm surges up to 2 meters above mean sea level are possible in Isabela and Ilocos Sur, PAGASA said.

Occasional moderate to heavy rains may prevail over Visayas while scattered light to moderate to at times heavy rains may be experienced in Palawan, Zamboanga Peninsula, Northern Mindanao, and Caraga due to the southwest monsoon (Habagat) enhanced by Ompong.

Residents in these areas, especially those living near river channels, in low-lying areas, and in mountainous areas, are advised to take appropriate actions against possible flooding and landslides.

Ompong is expected to exit the Philippine area of responsibility by Saturday night.

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