National Drought Mitigation Center
Home
Education
Drought Basics
Drought In-depth
What is Drought?
Types of Drought
What is Climatology?
Drought for Kids
What is Drought?
How do People Study Drought?
How Does Drought Affect Our Lives?
Can We Protect Ourselves From Drought?
Glossary
Dust Bowl
Tutorials
U.S. Drought Monitor Tutorial
Who Makes the Map?
What Does the Map Show?
What Data are Used to Make the Map?
How are the Drought Categories Assigned?
What is the Timeline for Production?
Where can I Find the U.S. Drought Monitor?
How Can I Contribute?
Who uses the U.S. Drought Monitor?
Grass-Cast Tutorial
Drought Games
Planning
Plan for Drought
Planning Processes
Drought-ready Communities
Planning and Drought
Drought Plans
International Plans
State Drought Contacts
StatePlanning
State Plans
Tribal Plans
Drought Mitigation Database
Ranch Planning
Monitoring
U.S Drought Monitor
Drought Monitoring Tools
Climographs
Legacy
Historic PDSI
River Basin PDSI
Standardized Precipitation Index
Map Interpretation
Maps
SPI Program
OWWLS
Publications
News
News Archive
DroughtScape
Dry Horizons
Drought Summaries
Quarterly Summary Archive
Monthly Summary Archive
Annual Reports
Fact Sheets
Social Media Resources
Scholarly Publications
Drought Network News
Subscribe
Our Work
Global
Projects
Northeast U.S.
USDM Northwest
Prob Exceedance
International Resources
Project Detail
About Us
Who We Are
Contact Us
Events
Employment
Support NDMC
Drought Headlines
Drought Headlines Archive
Case Studies
Create a Drought Plan
Geiger Farm
Steve Knutson Ranch
Rainwater Harvesting Systems
Robinette Farms
Wildlife-centered Drought Plan
Web Policy
Update Bookmarks
Page Not Found
Home
Historic SPI Maps
Select a year:
Select a month:
©2026 - National Drought Mitigation Center