Standardized Precipitation Evapotranspiration Index (SPEI)
This index uses precipitation and potential evapotranspiration to calculate the impact of drought on the availability of water resources.
Please fill the following fields and select "Submit" to see the results.
| SPEI scale | |
| Class | Value |
| Extreme wet | SPEI ≥ 2 |
| Severe wet | 1.5 ≤ SPEI < 2 |
| Moderate wet | 1 ≤ SPEI < 1.5 |
| Moderate drought | -1.5 < SPEI ≤ -1 |
| Severe drought | -2 < SPEI ≤ -1.5 |
| Extreme drought | SPEI ≤ -2 |
| # | Date | SPEI |
|---|