A powerful storm that struck the Northeast this weekend brought unprecedented rainfall, with two areas experiencing rates of precipitation expected only once in a thousand years.

The storm caused widespread flooding, killed at least three people, and dropped around 10 inches of rain in parts of Connecticut and 6.7 inches in Stony Brook, New York, in just a few hours.

Scientists note that such extreme rainfall events are becoming more frequent in the Northeast due to climate change, which allows the atmosphere to hold more moisture.

The storm’s impact revealed significant infrastructure deficiencies, as many cities and towns in the region are not designed to handle such intense rainfall, NBC News has reported.

The flooding led to evacuations, water rescues, and prolonged road closures in Connecticut.

Written by B.C. Begley