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PRISM Normals - Known Issues

This page contains a list of known issues with the PRISM normals datasets.

For detailed information about PRISM dataset versions, please review our PRISM datasets document.

Known Issues

Issue Posted Type Variable(s) Date(s) Location(s) Issue Cause
1 12/07/21 Monthly, Annual ppt July Small area (~10x10 km) in central Colorado centered on -105.41, 39.64 Precipitation values are about 25 mm too high Unstable adjustment of a station with a short period of record
2 02/01/24 Monthly, Annual tmin, tmax, tmean, tdmean, vpdmin, vpdmax All Multiple Small number of West Coast grid cells incorrect Misalignment with the recently developed daily normals
3 08/06/24 Daily ppt, vpdmin ppt: Jun 01 - Sep 01; vpdmin: all days Multiple, most noticeable near Stockton, CA Small clusters of grid cells missing values Rounding issue produced small negative numbers instead of zeros in some grid cells