Pagasa: Northern portions of PH to be most affected by Rosal. MANILA, Philippines — Northern parts of the country are expected to bear the brunt of Super Typhoon Rosal, with heavy rains and strong winds possible in the coming days, the state weather bureau said Tuesday. The Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) said Super Typhoon Champi entered the Philippine area of responsibility at.