Table 2 Magnitude and frequency of drought events for spring, summer and annual timescale
Seasons | Drought magnitude | Total number of drought months | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Arbaminch | Arsi Negelle | Butajira | Halaba | Hawassa | Kulumsa | Melkassa | Woliata | Wondo Genet | Ziway | ||
Spring | Mild | 15 | 15 | 12 | 12 | 6 | 15 | 12 | 21 | 18 | 12 |
Moderate | 6 | 6 | 6 | 6 | 12 | 6 | 12 | 9 | 9 | 15 | |
Severe | 9 | 12 | 3 | 9 | 3 | 6 | 3 | 0 | 3 | 6 | |
Extreme | 0 | 0 | 6 | 0 | 3 | 3 | 3 | 3 | 3 | 0 | |
Total | 30 | 33 | 27 | 27 | 24 | 30 | 30 | 33 | 33 | 33 | |
Summer | Mild | 9 | 12 | 12 | 21 | 12 | 18 | 9 | 18 | 12 | 9 |
Moderate | 6 | 12 | 3 | 6 | 18 | 0 | 6 | 6 | 9 | 9 | |
Severe | 3 | 9 | 3 | 0 | 3 | 6 | 0 | 3 | 3 | 3 | |
Extreme | 3 | 3 | 6 | 3 | 0 | 3 | 6 | 3 | 3 | 3 | |
Total | 21 | 36 | 24 | 30 | 33 | 27 | 27 | 30 | 27 | 24 | |
Annual | Mild | 96 | 12 | 12 | 60 | 36 | 72 | 48 | 72 | 60 | 84 |
Moderate | 24 | 48 | 12 | 48 | 36 | 48 | 36 | 12 | 36 | 36 | |
Severe | 24 | 36 | 0 | 0 | 12 | 0 | 12 | 0 | 12 | 36 | |
Extreme | 0 | 24 | 36 | 12 | 24 | 12 | 12 | 12 | 24 | 12 | |
Total | 144 | 120 | 60 | 120 | 108 | 132 | 108 | 96 | 132 | 168 | |