Table 1 Number of storm severity index (SSI) classes for each geographical region.

From: A millennium-long reconstruction of damaging hydrological events across Italy

Severity classes (SSI)

Marche Region

Arno Basin

“Hot-Spot” (Italy)

Tiber Basin

Calore Basin

Adige Basin

Calabria + Sicily

1

21

31

50

30

30

30

20

2

51

47

65

40

20

43

26

3

12

16

20

24

7

15

18

4

3

5

6

13

4

4

3