The flood crossed a border. Our warning systems must too

In the high Himalayas, we need multi-hazard detection that starts at the source and crosses borders before the flood does.

Rasuwa’s disaster exposed a deeper gap in Himalayan early warning: We are better at tracking floods once they enter monitored rivers than detecting the high-mountain hazards that create them. By the time a downstream gauge records a catastrophic rise, the most valuable warning time may already have passed.