A powerful typhoon wrecked houses, caused towering tidal surges and forced hundreds of thousands of people to flee to emergency shelters as it cut across the northern Philippines on Sunday in the sixth major storm to hit the country in less than a month. Typhoon Man-yi slammed into the eastern island province of Catanduanes on Saturday night with sustained winds of up to 195 kilometers (125 miles) per hour and gusts of up to 240 kph (149 mph). There were no immediate reports of casualties from the typhoon, which was forecast to blow northwestward on Sunday across northern Luzon, the archipelago’s most populous region.