× NIDIS Weekly Summary Precipitation Snow Streamflow Surface Water Evaporative Demand Outlook Composite Drought
Evaluator eXperiment (CoDEX)
Experimental HiRes
Gridded Tool
☰ menu
NIDIS Intermountain West
Drought Early Warning System
June 27, 2017

CoDEX

April 3, 2017


North Platte

        

HUC 41018
Variable D-Category
Current USDM -
Blended CoDEX D0
30-Day SPI D0
90-Day SPI -
180-Day SPI -
Snowpack -
Soil D1
Streamflow -
1mo EDDI D0
3mo EDDI D0
Impacts  
South Platte

        

HUC 41019
Variable D-Category
Current USDM D1
Blended CoDEX D0
30-Day SPI -
90-Day SPI D0
180-Day SPI D1
Snowpack -
Soil D0
Streamflow -
1mo EDDI D3
3mo EDDI D3
Impacts D0 
Republican

        

HUC 41025
Variable D-Category
Current USDM D0
Blended CoDEX D1
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack  
Soil -
Streamflow D1
1mo EDDI D3
3mo EDDI D4
Impacts  
Upper Arkansas

        

HUC 41102
Variable D-Category
Current USDM D1
Blended CoDEX D0
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil D1
Streamflow D0
1mo EDDI D3
3mo EDDI D4
Impacts D1 
Rio Grande Headwaters

        

HUC 41301
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI D0
3mo EDDI -
Impacts  
Colorado Headwaters

        

HUC 41401
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI D0
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI D0
3mo EDDI D0
Impacts D0
Gunnison

        

HUC 41402
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI D0
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  
Dolores

        

HUC 41403
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil D0
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  
Upper Green

        

HUC 41404
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  
White-Yampa

        

HUC 41405
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  
Lower Green

        

HUC 41406
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil D0
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  
Dirty Devil

        

HUC 41407
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil -
Streamflow -
1mo EDDI D0
3mo EDDI -
Impacts  
San Juan

        

HUC 41408
Variable D-Category
Current USDM -
Blended CoDEX -
30-Day SPI -
90-Day SPI -
180-Day SPI -
Snowpack -
Soil D0
Streamflow -
1mo EDDI -
3mo EDDI -
Impacts  

The Composite Drought Evaluator eXperiment (CoDEX) is an experimental product, produced by the Colorado Climate Center, that is designed to work as an indicator of predominant conditions within certain regions of the Intermountain West. It is developed by assessing U.S. Drought Monitor described drought categories for each individual variable. Variables include precipitation, soil moisture, streamflows, vegetation, evaporative demand, and drought impacts. The composite of drought categories for all these variables are combined to represent overall conditions for each HUC4 region.

A region highlighted in yellow shows regions that are currently in a D0-D4 drought category, and the composite agrees with those conditions. Regions highlighted in orange should be closely monitored for possible degradations, and regions highlighted in green should be assessed for possible improvements.

This product is experimental and is for informational purposes only. It does not dictate what the U.S. Drought Monitor may look like in the future, and will not be a major source of information for the NIDIS Intermountain West DEWS webinars either.