Hurricane Florence is on a collision course with the southeastern United States. The immense and powerful storm will create high winds and surges along coastal towns and cities, but scientists are more concerned about how much rain Florence might produce — and the increased frequency of similar storms as a result of climate change.

James Kossin, a climate scientist with the National Oceanic and Atmospheric Administration, said flooding is the biggest risk with the incoming hurricane. Florence is moving so slow across the ocean that it might come to a near standstill once it hits land, moving somewhere around two to three miles per hour. If that happens, Florence could hit cities on the East Coast with record rainfall.

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A similar situation occurred last year when Hurricane Harvey made landfall in Texas. The massive storm slowed almost to a halt in the Houston area, dumping more than 60 inches of rain in some locations. The excess rain led to 93 deaths and completely shut down certain areas.

With Hurricane Florence set to repeat history, scientists believe slow moving storms may become the new norm — and it is all thanks to climate change.

Kossin and his team published a study this year that showed cyclones are moving slower on average. In fact, hurricanes have undergone a decrease in speed by about 10 percent over the past 70 years. Kossin believes climate change is slowing down wind currents, which hurricanes use to travel across the ocean. Once the storms stall over land, they continuously dump rain and produce record flooding. The only exception to this trend is in the Indian Ocean, where wind currents have remained strong.

Along with slowing down hurricanes, climate change is creating larger and more intense storms as ocean waters warm. The added warmth creates more fuel for the storms as the water evaporates. Harvey and Florence are two examples of this, and scientists believe that trend will continue until we begin to cut down greenhouse gases.

+ NOAA

Via NPR

Image via NOAA