Drought duration category

Drought severity

Average drought severity

Numbers of drought events

1-month

0.52 ÷ 1.53

0.83

13

1-season

0.57 ÷ 3.91

1.34

33

Cross-quarter

1.28 ÷ 6.81

3.61

22

Long-term

3.96 ÷ 31.30

11.25

12