Border areas between the Czech Republic and Poland were hit especially hard by floods over the weekend, with Romania and Austria also affected.

At least 17 people have been killed in some of the worst floods to hit central Europe in decades as Storm Boris sweeps through the region, dumping well over a month’s worth of rain.

The storm that hit central Europe — which unleashed several months’ worth of rain in just a few days — was spawned by a rare combination of meteorological factors.