The product produces a listing of the monthly precipitation totals for this range of months. Flags indicate the number of missing days in each month. If there are at least 20 years of historical record, the monthly averages for the period of record are also displayed. The number of missing months in each historical monthly average is indicated by a flag (see Notes).
The second portion of the product is simply the total precipitation for the period of interest and the historical average for the same period. The requested interval and historical interval used for the averages are included in the product header. Again, at least 20 years of historical data are required to produce a historical interval average.
The third section lists the 5 wettest such intervals in the historical record and the 5 driest intervals on record and their years of occurrence. An item in the "Notes" section indicates the number of years that were considered in the rankings. A minimum of 10 years of record is required to complete this section.
The final section gives the probability of receiving certain amounts of precipitation during the interval. These probabilities range from 0.01 (on the average 1 year in 100 will receive this amount of precipitation or less) to 0.99 (on the averge 99 years out of 100 will receive this amount or less). The probabilities are computed by fitting a Pearson Type III distribution to the historical data. Again, an item in the "Notes" section indicates the number of years that were used in constructing the distribution. A minimum of 30 years of data are required to fit the distribution.
|Station: CHARLESTON YEAGER ARPT||State: WV||ID: 461570|
|Latitude: 38.38||Longitude: -81.59||Elevation: 1016 feet|
|Station period of record: 8/1/1948-10/12/2000|
|Product Creation Date:
10/13/2000 14:46 EDT
|Interval Sum:||24.92 inches|
|Interval Average:||30.67 inches|
|Rank||High||Beginning Year||Low||Beginning Year|
For additional assistance, you can contact the HPRCC.