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Heavy Rainfall in the East Wednesday; Hot Temperatures Continue in Coastal Southern California

Heavy to excessive rainfall may lead to flooding Wednesday over southwest Pennsylvania into northern West Virginia, and western Maryland. Flood Watches have been issued. An extended period of hot weather will continue for parts of coastal southern California including Los Angeles through Thursday. Heat Advisories remain in effect. Read More >



Table 2.  Maximum Expected Rainfall for the Memphis CWA (in inches).



                                       RETURN PERIOD


RAIN          1 YR        2 YR        5 YR        10 YR       25 YR       50 YR      100 YR 
DURATION


3 Hour      1.80-2.20   2.25-2.50   2.75-3.25   3.00-3.50   3.50-4.00   4.00-4.50   4.25-5.00

6 Hour      2.25-2.50   2.75-3.00   3.30-3.75   3.75-4.25   4.25-5.00   4.75-5.50   5.00-6.00

12 Hour     2.75-3.00   3.25-3.75   3.75-4.50   4.30-5.25   4.75-6.00   5.50-6.50   6.00-7.50

24 Hour     3.10-3.50   3.50-4.25   4.50-5.30   5.00-6.00   5.75-7.00   6.50-7.75   7.00-8.50


Source: 'Rainfall Frequency Atlas of the United States', Technical Paper #40, Weather Bureau,    
         May 1961.