Table 2 Drought risk characteristics of the rainy months and seasons for SPI ≤ 1.0 values
From: Spatial and temporal drought incidence analysis in the northeastern highlands of Ethiopia
Month | Observed Drought risk | ||||
|---|---|---|---|---|---|
Frequency (years) | Magnitude | Intensity | Severity | ||
Peak SPI-Value | Year/s | ||||
February | 9 | −10.92 | −1.23 | −1.32 | 1999, 2000, 2012 |
March | 6 | −9.45 | −1.58 | −2.49 | 2008 |
April | 7 | −10.58 | −1.5 | −2.23 | 1984 |
May | 9 | −11.83 | −1.37 | − 1.52 | 1981 |
Feb-to-May (Belg: SPI-4) | 4 | −7.66 | −1.92 | −2.84 | 1999 |
June | 6 | −7.3 | −1.22 | −1.78 | 1981 |
July | 5 | −9.7 | −1.94 | −2.82 | 2015 |
August | 3 | −7.1 | −2.37 | −3.61 | 1984 |
September | 3 | −5.69 | −1.9 | −2.31 | 2009 |
June-to-Sept (Kiremt: SPI-4) | 4 | −8.03 | −2 | −2.32 | 2015 |
Feb-to-Sept (SPI-8) | 4 | −7.14 | −1.79 | −2.83 | 1984 |