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HOME > U.S. Drought > Drought Indices: Standardized Precipitation Index > Drought Indices: Standardized Precipitation Index Outlooks

Drought Indices
Standardized Precipitation Index Outlooks
3-Month SPI 6-Month SPI  
ICs: 1-5Feb2020
SPI 3 month Ensemble Standardized Precipitation Index Outlook Lead 1
SPI 3 month Ensemble Standardized Precipitation Index Outlook Lead 3
SPI  month Ensemble Standardized Precipitation Index Outlook Lead 2
Legend
Boundaries
Month-1 Forecasts:                                                    
Month-2 Forecasts:
Month-3 Forecasts:
Notes about this product:
  • Drought classification: D1 -0.8 > SPI > -1.2; D2 -1.3 > SPI > -1.5; D3 -1.6 > SPI > -1.8; and D4 SPI < -2
  • Data Source: National Multi-Model Ensemble (NMME)
  • GeoTIFF: Undefined value is -999.
  • Month-1 forecasts are ensemble monthly-mean forecasts for the month the same as the initial conditions (ICs). Month-2 forecasts are monthly-mean forecasts for the month after the ICs. For example, for ICs of 1-5 Jan 2013, month-1 forecasts are monthly-mean forecasts for Jan 2013 and month-2 forecasts are forecasts for Feb 2013.

Contacts: Kingtse Mo (Kingtse.Mo@noaa.gov) &
                  Li Xu (li.xu@noaa.gov)



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Page Author: Climate Prediction Center Internet Team
Page last modified: June 28, 2016
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