Desperate families ran their fingers down long lists of rescued people posted outside a military base Saturday, searching for names that could offer hope three days after devastating floods swept through northern Nepal.

The lists stretched across several pages, each name representing someone who survived the tsunami-like surge of freezing water, mud and debris that tore through communities near the Nepal-China border Wednesday morning.

For many families, however, the names they were looking for were missing.

At least 626 people have been killed and 2,426 remain missing in Nepal, authorities said Saturday, as rescue teams continued searching areas buried under mud and rock. The disaster has destroyed roads, submerged settlements and cut off parts of the region, severely complicating rescue efforts.

In Bidur, the last major town before the road to China, military personnel have established a hub for rescue operations.