Mean Monthly and Annual Precipitation
Hawaii

Statistic: 30-year average total precipitation 
Time period: 1961-1990
Time interval: monthly
Spatial format: grid
Data format: ARC/Info ASCII GRID

 Projection: Geographic
Spatial resolution: 15 arc-seconds (~ 450 meters)
Spatial Extent: Hawaii
Units: Millimeters
Date created: November 2002
Methods: The PRISM modeling system and Gaussian filter resolution enhancement. See FGDC-compliant metadata for details.

Examples 
Mean annual precipitation, entire region
Mean annual precipitation, Oahu Island
Features
  • Accepted by the US Department of Agriculture as the official precipitation maps for Hawaii
  • Incorporates topographic effects on precipitation
  • Captures rain shadows in great detail
  • Accounts for the varying ability of terrain features to enhance precipitation
  • Consistent treatment and spatial quality control of station data
  • "Universal" geographic (latitude/longitude) projection allows conversion to any other coordinate system
  • High-resolution, 15-second (<500 m) grids
  • Data format allows for easy import into ESRI's GIS products, as well as MAPINFO and Intergraph's GeoMedia

Data used in analysis

  • 422 National Weather Service stations
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