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Recent Western U.S. Precipitation

Zoom-In: Precipitation Subregion Maps

Generate maps of percent of normal precipitation between any two dates between 1996-2007. You can focus on a subregion of the western U.S. by inputting the latitude range and longitude range to zoom in on. Also, overlays are available from a suite of geographic information datasets to provide landmarks and help you locate specific points of interest on the map.



Choose the region and overlay maps desired.


  1. Variable desired:
  2. Starting date:
  3. Ending date:
  4. Input Geographic Area Desired:
    Longitude Range, in degrees E (-125 to -100):
    Latitude Range, in degrees N (30 to 50):
    (You must input all 4 values. Areas smaller than 2 x 2 degrees not recommended.)
  5. Overlays?

Link to: Line plots: accumulated precipitation

Current daily precipitation data used in these plots is courtesy of the Climate Prediction Center (W. Higgins and W. Shi). These data are updated everyday at about noon (MST), with data through 12 UTC the previous day. Note: the climatology for this dataset is only a 12 year average, 1996-2007. Caution should be used in interpretting these plots in mountainous regions.

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