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Normal monthly number of days with precipitation of .5, 1.0, 2.0, and 4.0 inches or more in the contiguous United States.
Four series of 12 maps of the United States, each 1: 10,000,000, present precipitation data based on the 30-yr period 1931-60.
Mean number of thunderstorm days in the United States.
Tabulations and maps show mean monthly and seasonal number of days with thunderstorms for 266 stations in the United States.
Rainfall frequency atlas of the United States for durations from 30 minutes to 24 hours and return periods from 1 to 100 years.
Forty-nine maps showing 30-min 1-,2-,3-,6-,12-, and 24-hr point precipitations for return periods of 1, 2, 5, 10, 25, 50, and 100 yr and interpolation diagrams for obtaining values for intermediate durations and return ...