MAPS ALERT: The WestWide Drought Tracker is getting a major upgrade!
New and improved maps are located here. We strongly encourage using the new maps application.
Continue to use the menu options above for time series and archive features until they are upgraded at a later date.
Select Year:      Select Month:

Choose Year/Month, press Submit, and then choose product below

Climate Product Options

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Archived Image:
PRISM > 06/2024 > SPI 30 Month > Western US

Download PRISM SPI 30 Month NETCDF Data for United States

Download PRISM SPI 30 Month GeoTIFF Data for United States