OCHA Flash Update No. 3 Philippines | Typhoon Maysak (3 April 2015)

This is an OCHA Flash Update on Typhoon Maysak.

Typhoon Maysak (known locally as Chedeng) further reduced its strength as it continued to approach the Philippines, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). As of 3 April, 8 a.m. (local time), Typhoon Maysak was located 745 km east of Virac, Catanduanes province in central Philippines, with maximum sustained winds of 150 km/h, gusts of up to 180 km/h (Category 1), moving west northwest at 15 km/h. The typhoon’s diameter reduced from 760 km to 450 km.

Following is a planning scenario based on information from the authorities:

Landfall: The typhoon is expected to make landfall over the eastern coast of Aurora or Isabela province by 5 April noon as a Category 1 typhoon. It is projected to cross northern Luzon towards Ilocos Sur province, reaching the South China Sea in the morning of 6 April and exiting the Philippine Area of Responsibility by the evening of that day.

Rain: Moderate to heavy rainfall is expected within the 100-200 km radius of the typhoon, which may trigger flashfloods and landslides particularly in Aurora, Isabela, Quezon and Ilocos provinces. Metro Manila will experience occasional heavy rains and gusty winds. Dams are unlikely to overflow.

Storm surge: Storm surges and sea surface waves of up to two metres are expected over the eastern coasts of Aurora, Isabela, Quezon, Camarines Sur and Catanduanes provinces.

Affected population: An estimated 56.6 million people may be affected in the regions I (Ilocos) II (Cagayan), III (Central Luzon), IV-A (Calabarzon), IV-B (Mimaropa), V (Bicol), VIII (Eastern Visayas), Cordillera Administrative Region and National Capital Region. Another 10,000 tourists visiting the eastern seaboard over the Holy Week may be affected.

The National Disaster Risk Reduction and Management Council’s Pre-Disaster Risk Assessment core group meets daily to assess the evolving situation and coordinate preparedness and response actions. Local and regional authorities are also taking active preparedness measures.

Public Storm Warning Signal (PSWS) No.1 is now raised over Camarines Sur and Catanduanes. Camarines Norte, Quezon, Aurora and Isabela provinces will also be placed under PSWS No.1 on 3 April and pre-emptive evacuation will begin in these areas.

Considering that the country is observing the Holy Week and a large number of vacationers are visiting the coastal areas at this time, the authorities advise those who have travelled to the provinces in the typhoon’s projected path to travel back to their homes by 3 April or postpone their return until after typhoon's landfall.

The Philippines Humanitarian Country Team is standing by to support government’s preparedness and relief efforts as needed.

The next Flash Update will be issued on 4 April.

For more information, contact:
Akiko Yoshida, Humanitarian Affairs Officer,, Mobile: +63-917-543-7251

To be added to the OCHA Philippines mailing list, please email


UN Office for the Coordination of Humanitarian Affairs
To learn more about OCHA's activities, please visit