The longitude ranges from 130W to 60W. The latitude ranges from 20N to 55N. The values should be entered as decimal degrees. All data starts on Jan 1, 1948 and continues to the present. The precipitation grids have a resolution of .25 degrees, and the temperature grids have a resolution of .5 degrees. West longitudes must be entered as negative numbers. For example, 70W would be entered as -70 or 80.2W would be entered as -80.2. Missing data will given a value of -9999 unless interpolation is selected.
The rainfall data is gathered from ftpprd.ncep.noaa.gov/pub/precip/wd52ws/us_daily/.
The temperature data is gathered from ftpprd.ncep.noaa.gov/pub/precip/wd52ws/us_temp/.
Find a latitude and longitude from Gazetteer or TopoZone .
View the current drought conditions ,
projected drought conditions,
Current and Anticipated Precipitation Anomalies over the U.S.