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NOAA Atlas 14 Cartographic Maps of Precipitation Frequency
Estimates for Selected ARIs and Durations
This web page provides access to NOAA Atlas 14 cartographic maps of precipitation frequency estimates for selected average recurrence intervals and durations (shown in the table below). We recommend that these color maps are used as visual aids only. Precipitation frequency estimates can be obtained from the high resolution grids available from the PFDS interface. Viewing the maps requires the Adobe Acrobat Reader (to download plugin, click here). See corresponding NOAA Atlas 14 document for more details.

The file formats on this page are provided as a convenience to users and does not imply endorsement by or represent opinions of the U.S. Government.

Average recurrence interval Duration
ARI (years) 60-min 6-hr 24-hr 2-day 10-day 30-day 60-day
1 √ √ √        
2 √ √ √ √ √ √ √
5 √ √ √        
10 √ √ √        
25 √ √ √        
50 √ √ √        
100 √ √ √ √ √ √ √



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Average recurrence interval:
Duration:


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