Table 3 SPI and EDI based category of drought severity (
SPI and EDI values | Category of drought severity |
|---|---|
1.5 and above | Wet |
0 <  = 1.49 | Normal |
0 to − 0.99 | Mild drought |
− 1.0 to − 1.49 | Moderate drought |
− 1.5 to − 1.99 | Severe drought |
− 2 and less | Extreme drought |