ルバング島
Starting May 15, PAGASA issued Storm Warning Signals for various areas across the Philippines. At 1500 UTC that day Signal Number One was initially issued over northern Palawan, Occidental Mindoro and Lubang Island. At its maximum coverage (at 0930 UTC May 17), Storm Signal Number 3 was issued for Zambales, Pangasinan, La Union, Tarlac, Benguet and Ilocos Sur, Signal Number 2 was for Bataan, Bulacan, Pampanga, Nueva Vizcaya, Nueva Ecija, Quirino, Ifugao, Mt. Province, Kalinga, Abra, Apayao and Ilocos Norte and Signal Number 1 was raised for Lubang Island, Batangas, Cavite, Laguna, Rizal, northern Quezon, Isabela, Aurora, Cagayan, Calayan Island, Babuyan Group of Islands, Batanes and Metro Manila Further on as Cosme (Halong) razed through Northern Luzon, these storm signals were scaled back until the storm reached the Cagayan-Batanes area and the Pacific Ocean proper.