Carolinas Recurrence Intervals

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Data Source: Station monthly precipitation data, NC State Climate Office

Reading a Recurrence Interval Map

This chart shows the likelihood of wet or dry conditions for a specified duration from 1 to 5 years. Each dot represents the probability of receiving a certain percentage of average precipitation for the specified duration. These probabilities are averaged for all stations in the Carolinas. Contour maps show small variations in recurrence across the region.