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Looking to Download Data? The Drought.gov team reformats data from multiple partners into web- and GIS-ready formats, which we use throughout Drought.gov. These data are free for all to download.
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Source Code: Climate and Drought Indices in Python (SPI, SPEI, PET)

This is a developmental/forked version of code that was originally developed by NIDIS/NCEI.

Source Code: Drought Indices in Fortran (SPI, PDSI)

NOAA's National Centers for Environmental Information (NCEI) developed Fortran code to calculate Standardized Precipitation Index (SPI) and the Palmer Drought Severity Index (PDSI).  This code

Southeast Climate Perspectives

A one-stop shop tool that places recent temperature and precipitation conditions in both a historical and geographical perspective across the Southeast.

Data Coverage
Regional
United States
Period of Record
Current Conditions
File Format
csv
Data Type
Land-based Station

Southern Regional Climate Center Dashboard

The Southern Regional Climate Center Dashboard provides climate data products for the Southern U.S., including Arkansas, Louisiana, Mississippi, Oklahoma, Tennessee, and Texas.

Data Coverage
Regional
United States
File Format
images
pdf
csv
Data Type
Land-based Station