Dhaka, Nov. 29 -- Days of devastating flooding across Southeast Asia have killed more than 300 people in Indonesia, Thailand and Malaysia, authorities said on Friday.

Heavy monsoon season rains paired with a tropical storm system inundated areas across the three countries, stranding residents on rooftops and cutting off entire communities.

Authorities in Indonesia were struggling to reach the worst-affected areas on Sumatra island, while authorities at a southern Thailand hospital brought in refrigerated trucks to store bodies after the morgue exceeded capacity.

In Indonesia's West Sumatra province, 53-year-old Misniati described a terrifying battle against rising floodwaters to reach her husband at home.

She said that, returning from...