In early July, central Texas experienced devastating flash floods, notably along the Guadalupe River in Kerr County, resulting in at least 116 fatalities. Following this, other regions have faced significant flooding due to unusual weather patterns that allowed moisture to accumulate. By mid-July, the National Weather Service had issued 3,040 flash flood warnings, making this one of the highest numbers recorded since 1986.
A retreating Polar Jetstream has contributed to the formation of thunderstorms, fueled by increased moisture from climate change. This has led to heavier downpours and exacerbated drought conditions. A study indicated that rainfall associated with flash floods has increased by 20% to 40% from 1949 to 2020.
Recent incidents include heavy rains in New York City, leading to multiple fatalities and significant flooding, as well as severe flooding in New Mexico and North Carolina linked to tropical storm activity, resulting in additional deaths and rescues.
As moisture continues to affect the Midwest and Northeast, the potential for further flash floods remains. The National Hurricane Center predicts that while tropical development is currently quiet, the hurricane season is still ahead, emphasizing ongoing risks tied to climate change.
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