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Plot seasonal composites (averages) of the mean or anomalies (mean - total mean) of Prism variables. Data is available from Jan 1895 to near present.
The resolution of the PRISM dataset on this page is 4km. They make available a higher resolution version you can get at their website. Note for states, choose "individual states" for map region and then the state.
To subtract one set of years from another, use a minus sign (-) before the years that are to be subtracted.
If CUSTOM Time Series:
Value to composite on:
Type of comparison: Value Anomaly Standardized Anomaly Percentage Greater or equal to value Less than or equal to value
Which state? Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Idaho Iowa Illinois Indiana Kentucky Kansas Louisiana Massachusetts Maryland Mississippi Missouri Montana Minnesota Michigan Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Oklahoma Oregon Pennsylvania Rhode Island Utah Vermont Virginia Wisconsin Wyoming Washington West Virginia Custom
If CUSTOM map region: Lowest lat: (-90 to 90) Highest lat: Western-most longitude (0 to 360): Eastern-most longitude: CUSTOM projection: Cylindrical Equidistant Northern Hemisphere Polar Stereographic Southern Hemisphere Polar Stereographic