Idaho Drought Conditions Map - May 13, 2017

Legend
Extremely Moist Very Moist Moderately Moist Normal Moderate Drought Severe Drought Extreme Drought

The Palmer Drought Severity Index (PDSI) and Crop Moisture Index (CMI) are indices of the relative dryness or wetness effecting water sensitive economies. The PDSI indicates the prolonged and abnormal moisture deficiency or excess. The CMI gives the short-term or current status of purely agricultural drought or moisture surplus and can change rapidly from week to week. Both indicies indicate general conditions and not local variations caused by isolated rain. Calculation of the PDSI and CMI are made for 350 climatic divisions in the United States and Puerto Rico. Input to the calculations include the weekly precipitation total and average temperature, division constants (water capacity of the soil, etc.) and previous history of the indices.
The PDSI is an important climatoligical tool for evaluating the scope, severity, and frequency of prolonged periods of abnormally dry or wet weather. It can be used to help delineate disaster areas and indicate the availability of irrigation water supplies, reservior levels, range conditions, amount of stock water, and potential intensity of forest fires. The CMI can be used to measure the status of dryness or wetness affecting warm season crops and field activities.

Drought Index Maps For Neighboring States and Provinces:

  • Montana Interactive Drought Index Map
  • Nevada Interactive Drought Index Map
  • Oregon Interactive Drought Index Map
  • Utah Interactive Drought Index Map
  • Washington Interactive Drought Index Map
  • Wyoming Interactive Drought Index Map

Related Idaho Maps:

  • Idaho Drought Monitor Map
  • Idaho First Frost Date Map
  • Idaho Last Frost Date Map
  • Idaho 1990 USDA Hardiness Zone Map
  • Idaho 2012 USDA Hardiness Zone Map
  • Map of Idaho Record High/Low Temperatures
  • Idaho Heat Zones Map
  • Idaho Ecoregions

Drought Conditions for Idaho Climate Divisions

Climate Division Panhandle - Extremely Moist
Average Temperature:50.6
Precipitation (inches):0.57
Soil Moisture - Upper Level (inches):0.92
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:98.8
Potential Evaporation:0.57
Run Off (Inches):0.0
Crop Moisture Index:0.08
Crop Moisture Index - 1 Week Change:-0.49
Monthly Mositure Anomaly Index:1.37
Palmer Drought Index:7.59
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Eastern Highlands - Extremely Moist
Average Temperature:51.2
Precipitation (inches):0.04
Soil Moisture - Upper Level (inches):0.0
Soil Moisture - Lower Level (inches):5.93
Percentage Field Cap. End of Week:84.7
Potential Evaporation:0.61
Run Off (Inches):0.0
Crop Moisture Index:0.15
Crop Moisture Index - 1 Week Change:-0.51
Monthly Mositure Anomaly Index:1.46
Palmer Drought Index:9.45
Precipitation Needed to End Drought (Inches):-999.0
Climate Division North Central Prairies - Extremely Moist
Average Temperature:52.6
Precipitation (inches):0.55
Soil Moisture - Upper Level (inches):0.68
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:95.4
Potential Evaporation:0.64
Run Off (Inches):0.0
Crop Moisture Index:0.32
Crop Moisture Index - 1 Week Change:-0.5
Monthly Mositure Anomaly Index:1.47
Palmer Drought Index:10.09
Precipitation Needed to End Drought (Inches):-999.0
Climate Division North Central Canyons - Extremely Moist
Average Temperature:53.1
Precipitation (inches):0.42
Soil Moisture - Upper Level (inches):0.63
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:94.7
Potential Evaporation:0.54
Run Off (Inches):0.0
Crop Moisture Index:0.2
Crop Moisture Index - 1 Week Change:-0.51
Monthly Mositure Anomaly Index:1.75
Palmer Drought Index:7.63
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Central Mountains - Extremely Moist
Average Temperature:49.9
Precipitation (inches):0.36
Soil Moisture - Upper Level (inches):0.67
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:95.3
Potential Evaporation:0.6
Run Off (Inches):0.0
Crop Moisture Index:0.08
Crop Moisture Index - 1 Week Change:-0.5
Monthly Mositure Anomaly Index:0.43
Palmer Drought Index:4.88
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Southwestern Valleys - Very Moist
Average Temperature:54.3
Precipitation (inches):0.14
Soil Moisture - Upper Level (inches):0.1
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:87.1
Potential Evaporation:0.58
Run Off (Inches):0.0
Crop Moisture Index:0.18
Crop Moisture Index - 1 Week Change:0.06
Monthly Mositure Anomaly Index:2.17
Palmer Drought Index:3.97
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Southwestern Highlands - Extremely Moist
Average Temperature:52.3
Precipitation (inches):0.08
Soil Moisture - Upper Level (inches):0.1
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:87.1
Potential Evaporation:0.59
Run Off (Inches):0.0
Crop Moisture Index:0.11
Crop Moisture Index - 1 Week Change:-0.46
Monthly Mositure Anomaly Index:2.17
Palmer Drought Index:11.42
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Central Plains - Extremely Moist
Average Temperature:54.2
Precipitation (inches):0.02
Soil Moisture - Upper Level (inches):0.0
Soil Moisture - Lower Level (inches):5.95
Percentage Field Cap. End of Week:85.0
Potential Evaporation:0.62
Run Off (Inches):0.0
Crop Moisture Index:0.22
Crop Moisture Index - 1 Week Change:0.09
Monthly Mositure Anomaly Index:0.85
Palmer Drought Index:6.67
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Northeastern Valleys - Extremely Moist
Average Temperature:53.0
Precipitation (inches):0.34
Soil Moisture - Upper Level (inches):0.63
Soil Moisture - Lower Level (inches):6.0
Percentage Field Cap. End of Week:94.7
Potential Evaporation:0.67
Run Off (Inches):0.0
Crop Moisture Index:0.19
Crop Moisture Index - 1 Week Change:0.09
Monthly Mositure Anomaly Index:3.57
Palmer Drought Index:14.78
Precipitation Needed to End Drought (Inches):-999.0
Climate Division Upper Snake River Plains - Extremely Moist
Average Temperature:54.2
Precipitation (inches):0.05
Soil Moisture - Upper Level (inches):0.0
Soil Moisture - Lower Level (inches):5.82
Percentage Field Cap. End of Week:83.1
Potential Evaporation:0.66
Run Off (Inches):0.0
Crop Moisture Index:0.06
Crop Moisture Index - 1 Week Change:-0.0
Monthly Mositure Anomaly Index:0.1
Palmer Drought Index:5.31
Precipitation Needed to End Drought (Inches):-999.0
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