Monitoring Drought

The Standardized Precipitation Index

1997 SPI Maps through July

click on images for full-size maps
1-month SPI through July 3-month SPI through July
Interpretation of 1-month SPI
Interpretation of 3-month SPI
6-month SPI through July 9-month SPI through July
Interpretation of 6-month SPI
Interpretation of 9-month SPI
12-month SPI through July Year-to-date SPI through July
Interpretation of 12-month SPI
Year-to-date SPI

 

 

 

© 2005 National Drought Mitigation Center

 
Quick Link to Other Drought-related Sites Quick Link for Media Drought for Kids Publications Drought Photo Gallery Drought Network News Search the Site Site Map What's New Quick Link to NDMC's Drought Impact Reporter Link to US Drought Monitor Back to the NDMC Home Page Contact Information About the NDMC Mitigating Drought Understanding Your Risk Planning for Drought What is Drought?