Classification of drought indices of SPI, SPEI
| SPI and SPEI values . | Class . |
|---|---|
| Greater than 2.00 | Extremely wet |
| 1.50–1.99 | Severely wet |
| 1.00–1.49 | Moderately wet |
| 0.50–0.99 | Slightly wet |
| −0.49–0.49 | Near normal |
| −0.99 to −0.50 | Mild dry |
| −1.49 to −1.00 | Moderately dry |
| −1.99 to −1.50 | Severely dry |
| Less than −2.00 | Extremely dry |
| SPI and SPEI values . | Class . |
|---|---|
| Greater than 2.00 | Extremely wet |
| 1.50–1.99 | Severely wet |
| 1.00–1.49 | Moderately wet |
| 0.50–0.99 | Slightly wet |
| −0.49–0.49 | Near normal |
| −0.99 to −0.50 | Mild dry |
| −1.49 to −1.00 | Moderately dry |
| −1.99 to −1.50 | Severely dry |
| Less than −2.00 | Extremely dry |