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Relationship between storm and antecedent precipitation over Kansas, Oklahoma, and Eastern Colorado

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  • Personal Author:
  • Corporate Authors:
    United States, Office of Hydrology,
  • NOAA Program & Office:
    NWS (National Weather Service)
  • Description:
    Antecedent and subsequent rainfall amounts were examined for storms with a daily precipitation amount equal to or greater than the 10-year 24-hour amount for Kansas, Oklahoma, and eastern Colorado. This investigation centered on the statistical relationships between an intense central precipitation event and its antecedent and subsequent precipitation within a small area ( 10 square miles or less) . Daily precipitation sequences of 31 days centered on the maximum daily precipitation amount were used as the data base. Some of the results from this study are: seasonally, storms with central rainfall amounts of 14.5 inches or more are most likely to occur in September or October in the central Plains; the larger central precipitation amounts tend to be associated with much shorter than average durations of the immediate antecedent dry period; as the central storm amount increases, the amount of precipitation contributed by the surrounding wet days increases; the distribution of total antecedent and subsequent precipitation is not symmetrical; and the ratio of the total antecedent and subsequent precipitation as a percent of the central storm decreases as the central precipitation increases. Statistically, the analysis of the daily rainfall indicates that for a 3- to a 5-day probable maximum precipitation event a reasonable antecedent precipitation amount would be 10 to 20 percent of the probable maximum precipitation amounts within a 31-day period centered on the day of maximum precipitation in the central Plains.
  • Content Notes:
    Edwin H. Chin and John L. Vogel.

    Includes bibliographical references (page 77).

  • Keywords:
  • Series:
    NOAA technical memorandum NWS HYDRO ; 45
  • Document Type:
    Technical Memorandum
  • Place as Subject:
  • Rights Information:
    Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha256:697faf4092a275d58428c205467f1be7be4200d7a7a881f3360a8954a779b716
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  • File Type:
    Filetype[PDF - 3.32 MB ]
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