NWS Hydrologic Information Center
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Palmer Drought Severity Index

 Developed to measure long-term (months) soil moisture variations


Crop Moisture Index

 Monitors shorter-term (days) soil moisture variations (top 5 feet)


Soil Moisture Monitoring and Prediction

 Experimental project conducted by the NWS National Centers for Environmental Prediction (NCEP) Climate Prediction Center


Soil Moisture and Outlook for U.S.

 Center for Ocean-Land-Atmosphere Studies initial model  conditions and predicted 14-day change in soil moisture


Keetch-Byram Drought Index

 Used by the U.S. Dept. of Agriculture to monitor wildfire conditions

Please note: Soil moisture indices may be misleading in winter because they may not adequately
account for frozen precipitation, snow on the ground or frozen ground.

Current Flooding,  Outlooks,  Hydrologic Conditions,   Archive,   Home

Hydrologic Information Center
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March 25, 2008
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Page Author: Denise George