Rank (m)

Year

Maximum Magnitude

Probability (P) %

Period of return (T)

1

1969

6.1

0.961538462

104

2

1977

5.9

1.923076923

52

3

1913

5.8

2.884615385

34.66666667

4

1993

5.6

3.846153846

26

5

1967

5.6

4.807692308

20.8

6

1921

5.6

5.769230769

17.33333333

7

1997

5.5

6.730769231

14.85714286

8

2013

5.4

7.692307692

13

9

1980

5.4

8.653846154

11.55555556

10

1988

5.3

9.615384615

10.4

11

1975

5.3

10.57692308

9.454545455

12

1962

5.3

11.53846154

8.666666667

13

1979

5.1

12.5

8

14

1978

5.1

13.46153846

7.428571429

15

1974

5.1

14.42307692

6.933333333

16

1972

5.1

15.38461538

6.5

17

1996

5

16.34615385

6.117647059

18

2000

4.9

17.30769231

5.777777778

19

1994

4.9

18.26923077

5.473684211

20

1987

4.9

19.23076923

5.2

21

2001

4.8

20.19230769

4.952380952

22

1990

4.8

21.15384615

4.727272727

23

1982

4.8

22.11538462

4.52173913

24

1976

4.8

23.07692308

4.333333333

25

1971

4.8

24.03846154

4.16

26

1970

4.8

25

4

27

1964

4.8

25.96153846

3.851851852

28

2009

4.7

26.92307692

3.714285714

29

2006

4.7

27.88461538

3.586206897

30

1991

4.7

28.84615385

3.466666667

31

1986

4.7

29.80769231

3.35483871

32

1984

4.7

30.76923077

3.25

33

1983

4.7

31.73076923

3.151515152

34

2004

4.6

32.69230769

3.058823529

35

2003

4.6

33.65384615

2.971428571

36

1985

4.6

34.61538462

2.888888889

37

2012

4.5

35.57692308

2.810810811

38

2011

4.5

36.53846154

2.736842105

39

2007

4.5

37.5

2.666666667

40

2002

4.5

38.46153846

2.6

41

1992

4.4

39.42307692

2.536585366

42

2010

4.4

40.38461538

2.476190476

43

1999

4.4

41.34615385

2.418604651