When typhoon Talas blasted Japan, it left behind several lakes created by huge landslides.  Now, September 20 Japan time, one of those lakes is overflowing its mud dam, and could burst.

Japan’s Land Ministry says a lake created by a landslide rose to the top of its mud dam on Tuesday morning, and began overflowing 30 minutes later.

The town of Tanabe is in the path of the flood, as are several other towns further downstream.  Land Ministry officials say people living in the path of any massive flood, as a result of the dam possibly bursting, should evacuate now.