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HOME > Global Drought > Drought Indices: Standardized Precipitation Index > Drought Indices: Standardized Precipitation Index

Drought Indices
Standardized Precipitation Index
Recent Observations
31Mar2024
SPI 3 month Ensemble Standardized Precipitation Index Outlook Lead 1
SPI 6 month Ensemble Standardized Precipitation Index Outlook Lead 3
SPI 12 month Ensemble Standardized Precipitation Index Outlook Lead 2
SPI 24 month Ensemble Standardized Precipitation Index Outlook Lead 2
Legend
Boundaries
       
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: CPC Gauge - OLR blended daily precipitation
    analysis
  • GeoTIFF: Undefined value is -999.
 Related Links:
Contacts: Muthuvel Chelliah (muthuvel.chelliah@noaa.gov) &
                  Li Xu (li.xu@noaa.gov)


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