Data Alert:  28 October 2021

Phasing Out ASCII GRID Format

Now that most users download PRISM data in BIL format, we will stop producing data in ASCII GRID format as of January 1, 2022. The 1991-2020 30-year normals will remain available in both formats, but the time series grids will be available in BIL format only. Note that if you have a particular need for it, the BIL grids can be converted to ASCII GRID format using the open source GDAL raster processing software, among other tools.