A glacier gave way. A valley had no warning.
Here is the disaster in plain terms: what broke, what it did, and why entire communities in Nepal never saw it coming.
Roughly 5,200 meters up, a huge section of ice and rock sheared off a glacier above the Nepal-Tibet border and began to fall.
~1,200m dropThe falling ice and rock crashed into the Lhende River with enough force that early sensors mistook it for an earthquake. The debris instantly plugged the river valley like a cork.
USGS: landslide, not a quakeWater backed up behind the rubble until the natural dam gave way. Regional flood scientists recorded the Trishuli River rising 27 feet in 30 minutes as the surge broke loose.
ICIMOD hydrological dataThe flood tore through Timure and Syafru Besi in Rasuwa district and reached into Nuwakot and Dhading, burying homes and markets and sweeping away vehicles with people still inside them.
3+ villages hit directlyNineteen bridges were torn out and roughly 25 miles of road disappeared. Hydroelectric plants downstream were damaged, leaving the region without power right when it needed light and communication most.
Rescue access still limited
“My brother-in-law had a liquor store here… their entire house had been swept away.”
Raju Bhadel, local resident — Al Jazeera“I saw around nine trucks being swept away by the floods, including people.”
Manoj Mishra, schoolteacher — Al Jazeera“There is no update till now. I fear there won't be any update.”
Kathmandu journalist with family missing — Fox News