Climate Connection

Excess Rainfall  
Excess rainfall from storms (i.e. severe thunderstorms, hurricanes, extratropical cyclones) can produce short-term and long-term flooding conditions both locally and regionally. The frequency of extreme rainfall events has increased across the southeast over the past twenty years. Increases in extreme rainfall events are most prevalent across the lower Mississippi River Valley and along the northern Gulf Coast. Most climate models are in agreement that the number of days with extreme rainfall events (more than 4 inches) will continue to increase throughout the century.  
Li, L., Li, W., & Kushnir, Y. (2012). Variation of the North Atlantic subtropical high western ridge and its implication to Southeastern US summer precipitation. Climate Dynamics, 39(6), 1401-1412.,Curtis, S. (2008). The Atlantic multidecadal oscillation and extreme daily precipitation over the US and Mexico during the hurricane season. Climate Dynamics, 30(4), 343-351.,Kunkel, K.E, L.E. Stevens, S.E. Stevens, L. Sun, E. Janssen, D. Wuebbles, C.E. Konrad II, C.M. Fuhrman, B.D. Keim,
M.C. Kruk, A. Billet, H. Needham, M. Schafer, and J.G. Dobson, 2013: Regional Climate Trends and Scenarios for the
U.S. National Climate Assessment. Part 2. Climate of the Southeast U.S., NOAA Technical Report NESDIS 142-2, 94 pp.,Groisman, P. Y., Knight, R. W., & Karl, T. R. (2001). Heavy Precipitation and High Streamflow in the Contiguous United States: Trends in the Twentieth Century. Bulletin of the American Meteorological Society, 82(2), 219–246. doi:10.1175/1520-0477(2001)082<0219:hpahsi>;2

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