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Research, Policy and Practice

Table 1 SPI values and corresponding drought categories

From: Livestock population dynamics and pastoral communities’ adaptation to rainfall variability in communal lands of Kgalagadi South, Botswana

SPI values Drought category
2.0 and above Extremely wet
1.5 to 1.99 Very wet
1.0 to 1.49 Moderately wet
−.99 to .99 Near normal
−1.00 to −1.49 Moderate drought
−1.50 to −1.99 Severe drought
≤ − 2.0 Extreme drought