Six people died when a Philippine air force helicopter crashed in southern Agusan del Sur province during a humanitarian mission, according to the AP and Reuters. Their bodies have since been recovered. The worst-hit region is the island of Cebu, where local authorities reportedly said 39 people died either by drowning or falling debris.

Kalmaegi, the 13th storm of the year, is forecast to directly hit central Vietnam with hurricane-level winds and heavy rain starting November 6.

One person was killed when Typhoon Kalmaegi hit the central Philippines on Tuesday, the national disaster agency said, as torrential rains, strong winds and storm surges forced tens of thousands to evacuate from their homes.

Kalmaegi was a tropical storm in the Philippine Sea Sunday afternoon Philippine Time, the Joint Typhoon Warning Center said in its latest advisory. Flash flooding can occur well inland and away from the storm’s center. Even weaker storms can produce excessive rainfall that can flood low-lying areas.