MANILA, Philippines - The death toll from landslides and flash floods in the eastern Philippines jumped to nearly 340 with 150 others missing today, after a second rainstorm hit a region still reeling from last week's deadly typhoon.

Social Welfare Secretary Corazon Soliman, who returned to Manila today from an aerial survey of the area, said 306 people were killed and 150 missing in Quezon province overnight, about 40 miles east of Manila.

The Office of Civil Defense reported 19 were killed in Aurora province, eight in Rizal province, and one each in the Manila suburb of Marikina and Camarines Norte province. Other officials reported three died in Bulacan province north of Manila.

Soliman told ABS-CBN television that bad weather and roads blocked by landslides and submerged in floodwaters prevented authorities from delivering relief supplies and rescuing people on rooftops.

She said most of the dead were in three Quezon towns: Real, Infanta and General Nakar. At least 150 were reported missing in Real, she said.

Officials were arranging for a coast guard boat to reach the three Quezon towns facing the Pacific Ocean, from where a new typhoon was approaching.

Air force spokesman Lt. Col. Restituto Padilla said that stricken towns in Quezon were inaccessible after swollen rivers washed away bridges and uprooted trees.

A coast guard helicopter flew 12 people who were injured in the Quezon landslides to Manila for treatment, most with fractures and some in critical condition, Amparo said.