Assessing the Probability of Drought Severity in a Homogeneous Region

Table 1

The steady-state probabilities observed for various drought conditions.

SPI	SPI > −1 & SPI ≤ 1	SPI > −1.5 & SPI ≤ −1	SPI > −2 & SPI ≤ −1.5	SPI ≤ −2
Drought classes	Normal dry	Median dry	Severely dry	Extremely dry
Steady state probabilities	0.53	0.17	0.14	0.05