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Table 1

Classification of SPEI drought categories

Drought categoryExtreme droughtSevere droughtModerate droughtSlight drought
SPEI value ≤ −2.0 −2.0 to −1.5 −1.5 to −1.0 −1.0 to −0.5 
Drought categoryExtreme droughtSevere droughtModerate droughtSlight drought
SPEI value ≤ −2.0 −2.0 to −1.5 −1.5 to −1.0 −1.0 to −0.5 
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