Florence second rainiest storm in U.S. since 1949, NOAA expert says
WASHINGTON — Hurricane Florence was the nation’s second rainiest storm in 70 years, a top rainfall meteorologist calculated.
Only last year’s Hurricane Harvey rained more over a 14,000 square mile area during a four-day time period, said Ken Kunkel, a meteorologist at the National Oceanic Atmospheric Administration and North Carolina State University.
Scientists said climate change likely boosted rainfall totals for both storms.
Kunkel’s preliminary analysis found more than 17.5 inches fell on average over five weather stations in the 14,000 square miles of the eastern Carolinas stretching from Fayetteville, N.C., to Florence, S.C. The amount is second to Harvey’s 25.6 inches.
“That’s a lot of water,” Kunkel said. The analysis has not been published or peer reviewed yet, but will be, Kunkel said.
The third rainiest storm was in March 2016 in northern Louisiana and the seventh was in southern Louisiana in August 2016. The three rainiest and four of the top seven have all occurred in the last three years.
Kunkel, who specializes in analyzing rain data from thousands of weather stations, based his work on rainfall since 1949 when recording became more widespread across the continental United States.
Kunkel examined rainfall over a compact area — 14,000 square miles, a figure based on latitude and longitude squares — and larger areas such as 20,000, 30,000 and 80,000 square miles. Florence’s unusual amount was most noticeable on the smallest scale.
When the scientist looked at 20,000 square miles, Florence fell to seventh place, behind Harvey, 1998’s Hurricane Georges, the two Louisiana rainstorms, a 1962 northern California downpour and a 1994 Texas drenching.