Table 2 SPEI categories and corresponding climate conditions24.
From: Human-induced temperature rise is driving Africa towards drought-prone climatic conditions
SPEI | Climate Condition |
|---|---|
SPEI \(\ge\) 2.0 | Extremely wet |
1.5 \(\le\) SPEI < 2.0 | Severely wet |
1.0 \(\le\) SPEI < 1.5 | Moderately wet |
0.5 < SPEI < 1.0 | Mildly wet |
-0.5 \(\le\) SPEI \(\le\) 0.5 | Normal |
-1.0 < SPEI < -0.5 | Mildly dry |
-1.5 < SPEI \(\le\) -1.0 | Moderately dry |
-2.0 < SPEI \(\le\) -1.5 | Severely dry |
SPEI \(\le\) -2.0 | Extremely dry |
