9/56 YEAR CYCLE: US HURRICANES     

Moon Sun Finance

David McMinn


A 9/56 year cycle has been established in patterns of US & Western European financial crises and the timing of earthquakes around the circum Pacific rim (eg: California & Chile). This paper examines the prospect of a 9/56 year hurricane cycle in the Atlantic and northern Pacific. The raw data on the timing of major Atlantic, east Pacific and west Pacific storms was sourced from unisys.com and formed the basis of the assessment. There were various periods examined 1851 - 1928 & 1929 - 2008 for the Atlantic, 1949 - 2008 for the east Pacific and 1946 - 2009 for the west Pacific. 

What is the 9/56 year cycle? It consists of a grid with intervals of 9 years horizontally and 56 years vertically, in which events occur preferentially. This phenomenon arises directly from Moon Sun tidal effects, as any key events falling preferentially in a 9/56 year pattern correlates very closely with Moon Sun cycles. The 56 year sequences have been numbered, with 1761, 1817, 1873, 1929, 1985 being designated Sequence 01.

Atlantic Hurricanes

1851 to 1928. The complete 9/56 year grid in Table 1 was divided into four quarter segments of 14 56 year sequences each. These quarter sectors have been labeled Grid A, B, C & D. Interestingly, Grid D contained 12 of the total 27 Category 4 & 5 events (marginally significant p < .05). No significance was produced if Category 3 hurricanes were included in the assessment (see Appendix 2). 

Table 1                                      THE COMPLETE 9/56 YEAR CYCLE: 1851 – 1928
                                           
              ATLANTIC HURRICANES Category 4 & 5

GRID A

 

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

Sq
01

 

 

 

 

 

 

 

 

 

 

 

1855

1864

1873

 

 

 

 

 

1857

1866

1875

1884

1893

1902

1911

1920

1929

1868

1877

1886

1895

1904

1913

1922

 

 

 

 

 

 

 

1924

 

 

 

 

 

 

 

 

 

 

 

 

 

GRID B

 

 Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

Sq
15

 

 

 

 

 

 

 

 

 

1851

1860

1869

1878

1887

1826

1835

1844

1853

1862

1871

1880
**

1889

1898

1907

1916

1925

 

 

1882

1891

1900

1909

1918

1927

 

 

 

 

 

 

 

 

GRID C

 

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

Sq
29

 

 

 

 

 

 

 

 

1856

1865

1874

1883

1892

1901

1840

1849

1858

1867

1876

1885

1894

1903

1912

1921

1896

1905

1914

1923

 

 

 

 

 

 

 

 

 

 

GRID D

 

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

Sq
43

1859

 

 

 

 

 

 

1852

1861

1870

1879

1888

1897

1906

1915
**

1854

1863

1872

1881

1890

1899

1908

1917

1926
****

 

 

 

 

 

1910

1919

1928

 

 

 

 

 

 

 

 

 

 

 

Source of Raw Data: UNISYS



1929 to 2008. Table 2 contains the major hurricanes (Category 5 only) recorded in the Atlantic Ocean during 1929 - 2008. The complete 9/56 year grid was again divided into equal four quarter sectors each of 14 56 year sequences. This produced a very similar pattern as presented in Table 1, with only a slight variation (ie: Grids A, B, C & D in Table 1 closely correspond to Grids E, F, G & H respectively in Table 2). Amazingly, Grid E contained 16 events (Category 5) of a total 30 (significant p < .001).

Table 2                                             THE COMPLETE 9/56 YEAR CYCLE: 1929 - 2008
                                                          NORTH ATLANTIC HURRICANES
Category 5

GRID E

Sq
43

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

 

 

 

 

 

 

 

 

1931

1940

1949

1958
*

1967

1976

 

 

1933

1942

1951

1960
**

1969

1978

1987

1996

2005
****

2014

 

1971

1980

1989

1998

2007
**

2016

 

 

 

 

 

 

 

GRID F

 

Sq
01

Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

 

 

 

 

 

 

 

 

 

 

 

 

 

1934

 

 

 

 

 

 

 

1936

1945

1954

1963

1972

1981

1990

1929

1938

1947

1956

1965

1974

1983

1992

2001

2010

2019

 

 

 

1985

1994

2003

2012

2021

 

 

 

 

 

 

 

 

 

GRID G

 

Sq
15

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

 

 

 

 

 

 

 

 

 

 

 

1930

1939

1948

 

 

 

 

 

1932

1941

1950

1959

1968

1977

1986

1995

2004

1943

1952

1961
**

1970

1979

1988

1997

2006

2015

 

 

 

 

 

1999

2008

 2017

 

 

 

 

 

 

 

 

 

 

 

 GRID H

 

Sq
29

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

 

 

 

 

 

 

 

 

 

 

1935

1944

1953

1962

 

 

 

 

1937

1946

1955

1964

1973

1982

1991

2000

2009

 

1957

1966

1975

1984

1993

2002

2011

 

 

 

 

 

 

 

Source of Raw Data: UNISYS


A combination of Categories 4 & 5 hurricanes were also considered and have been presented in Appendix 3. Grid G contained 39 severe weather extremes (Categories 4 & 5), where as 26.5 would have been expected by chance (significant p < .01). Additionally, there were a total of 76 Category 4 hurricanes experienced during 1929 - 2008, of which 31 happened in Grid G (significant p < .01). Strangely, Category 5 hurricanes were most likely to happen in Grid E and Category 4 hurricanes in Grid G. 

East Pacific Hurricanes

1949 - 2008. UNISYS presented raw data on east Pacific hurricanes for the post 1949 era and this was used to assess  the possibility of a 9/56 year cycle (see Table 3). Most notably, 40 major hurricanes of Categories 4 & 5 occurred in Grid K, which was significant (p < .01).   

Table 3                                           THE COMPLETE 9/56 YEAR CYCLE: 1949 - 2008
                                                         EAST PACIFIC HURRICANES
Categories 4 & 5

Grid  I

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

Sq
01

Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

1956

1965

1974
*

 

 

1931

1940

1949

1958

1967
*

1976
****

1985
***

1994
****
*

2003

2012

2021

 

1969

1978
****
*

1987
**

1996
*

2005
*

2014

 

Grid J

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

Sq
15

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

 

 

 

 

 

 

 

1943

1952

1961

1970

1979
**

1988
**

 

1936

1945

1954

1963

1972
*

1981

1990
****

1999
*

2008
*

 2017

 

 

 

1983
****
*

1992
****
***

2001
**

2010

2019

 

 

 

Grid K

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

Sq
29

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

 

 

 

 

 

1930

1939

1948

1957
*

1966

1975
**

1984
****

1993
****
***

2002
****

1941

1950

1959
***

1968

1977

1986
***

1995
***

2004
**

 

 

 

 

1997
****
***
*

2006
***

2015

 

 

 

 

 

Grid L

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

Sq
43

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

 

 

1951

1960

 

 

 

 

1953

1962

1971
*

1980
*

1989
**

1998
***

2007
*

2016

1955

1964

1973
***

1982
*

1991
**

2000  
*

2009
***

 

Source of Raw Data: UNISYS

West Pacific Typhoons (Northern Hemisphere)

1945 - 2007. Category 5 typhoons in the west Pacific were also assessed in relation to the 9/56 year cycle (see Table 4). 54 events occurred in 14 56 year sequences in Grid C (marginally significant p < .05).

Table 4                                   THE COMPLETE 9/56 YEAR CYCLE: 1945 - 2009
                                                   
WEST PACIFIC TYPHOONS Category 5

Grid A

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

Sq
01

1949

1958
****
***

1967  *** *

1976
*

1985

1951
*

1960

1969
**

1978
*

1987
****

1996  ****

2005
**

2014

2023

 

 

1980
*

1989
****
*

1998
*

2007
*

 

 

 

 

 

 

 

 

Grid B

 

 

 

 

 

 

 

 

 

 

 

 

Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

Sq
15

1945

1954
****

1963
**

1972
*

1981
*

1990
****

1999
*

1947

1956  
***

1965 ****
****

1974
**

1983
**

1992
***

2001
**

 

 

 

 

1994
*

2003
**

 

 

 

 

 

 

 

 

 

 

Grid C

 

 

 

 

 

 

 

 

 

 

 

 

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

Sq
29

1948

1957
****

1950

1959
****
**

1968
****

1977
 

1986
**

1995
***

2004
****

2013

1952
****
*

1961
****
*

1970
****

1979
**

1988
*

1997
****
****
***

2006
***

2015

 

 

 

 

 

 

Grid D

 

 

 

 

 

 

 

 

 

 

 

 

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

Sq
43

1953
****

1962
****
*

1971
****
*

1946

1955
**

1964
****
*

1973
*

1982
**

1991
***

2000
***

 

 

1966  **

1975
*

1984
*

1993
*

2002
***

 

 

 

 

 

 

 

 

Source of Raw Data: UNISYS



Lunar Tidal Effects

The obvious question arises - what activates the 9/56 year hurricane cycle? Moon Sun tidal cycles are hypothesised to produce the 9/56 year timing in hurricane and typhoon formation. The Moon, Sun and lunar north node repeat the angles 0o and 180o to within one degree every 9.0 and 56.0 solar years (David McMinn), which represents an amazing alignment of several Moon Sun cycles based on the first and second harmonics. The 9.0 year cycle is equivalent to a Saros cycle (223 synodic months) divided by 2, where as the 56 year cycle is derived by dividing the 112 year eclipse cycle by two (692.5 synodic months). Both the 18 year Saros and the 112 year eclipse cycle were listed by Robert van Gent in his extensive coverage of Moon Sun eclipse cycles. The Moon and Sun are hypothesised to strongly determine the timing of extreme weather events is not too outlandish, as numerous academic papers have been published on Moon Sun tidal influences in weather patterns (refs). 

Lunar North Node. Any events falling with significance in a 9/56 year pattern will always have the north (ascending) node sited in two sectors approximately opposite in the ecliptical circle WITH NO EXCEPTIONS. This will apply to the extreme weather events happening in the various grids discussed in this paper. The lunar nodes are strongly associated with Moon Sun tidal effects and, by inference, these forces may help explain why Atlantic hurricanes fall asymmetrically in 9/56 year patterns.

All years in Grid A Table 1 & 4 had the lunar north node (on July 1) sited within two ranges approximately opposite in the ecliptical circle (see Diagram 1). There were no exceptions to this finding.

Diagram 1     LUNAR NORTH NODE ECLIPTICAL POSITION (a)

(a) This diagram gives the ecliptical position of the north node (as on July 1)
for all years in Grid A Tables 1 & 4.
Source: David McMinn.

NB: The lunar (ascending) nodes are imaginary points in the heavens where the plane of the Earth’s orbit around the Sun (the ecliptic) is cut the plane of the Moon’s orbit around the Earth. The north (ascending) node occurs where the Moon crosses the ecliptic from south to north.

Apogee is the point (given in ecliptical degrees) in the lunar orbit, where the Moon is the greatest distance from Earth, while perigee is the least distance. In the lunar apse cycle, the apogee – perigee axis (apsides) rotates counter clockwise around the ecliptical circle, with apogee passing from spring equinox to spring equinox every 8.8474 tropical years. The apsides axis is very important in oceanic tides on Earth. When the full/new Moon is at apogee, the amplitude of tides in New York Harbor is 50% lower than when the full/new Moon is at perigee. Apogee could be expected to play a key role in any Moon Sun tidal effect influencing the timing of Atlantic hurricanes.  

Apogee takes 5.995 tropical years to complete one cycle north node to north node. The 18.0 year Saros eclipse cycle divided by 6 produced the integral number three and the 9 year Half Saros divided by 6 gave 1.5 (one plus a half). The 56 year cycle divided by 6 gave 9.3333 tropical years (9 plus one third). Additionally, 9.0 divided by the 8.8474 year apse cycle yielded 1.02 and 56.0 divided by the apse cycle gave 6.33 (6 plus one third). For apogee, there was an emphasis on the 1
st, 2nd and 3rd harmonics in the 9/56 year grid and this could be expected to show up in tidal cycles. 

Conclusions

There were several samples and time frames assessed - 1851 - 1928 (Atlantic Ocean - Categories 4 & 5), 1929 - 2008 (Atlantic Ocean - Categories 4 & 5), 1945 - 2008 (east Pacific - Categories 4 & 5) and west Pacific (Categories 5). They all yielded significance for quarter sectors of the complete 9/56 year grid. Only hurricanes in the Atlantic had raw data going back to the mid 19th century and were the only extreme storms that could be assessed over the very long term. Why there was a sudden shift in 9/56 year patterns for Atlantic hurricanes around 1929 remains enigmatic, although presumably it had something to do with Moon Sun tidal effects.
For the 1929 - 2008 period, both hurricane Categories 4 & 5 yielded significance in relation to 9/56 year timing. Similarly, east Pacific hurricanes also produced significance as they tended to occur in one quarter of the 9/56 year grid (significance p < .01).

There are four main influences determining the frequency of hurricanes in a given year. 
*    Sunspots. During the peak of the 11 year sunspot cycle, the higher solar activity results in warmer temperatures on the Earth's surface which feeds the formation of hurricanes. 
*    Moon Sun cycles. This effect is supported by the findings of this paper and is probably stronger than previously appreciated within traditional meteorology.
*    Volcanic eruptions can spew so much ash into the upper atmosphere that the amount of solar radiation reaching the Earth is reduced, resulting in lower surface temperatures and thus fewer major hurricanes. 
*    Global warming. The greenhouse effect shows up in the frequency of Atlantic Category 5 hurricanes over the long term. Between 1851 and 1920 no Category 5 hurricanes occurred, but in the 2000's alone 8 were experienced. 

Interestingly, the timing of hurricanes tended to cluster within one of the quarter segments of the complete 9/56 year cycle. This applied to the Atlantic, as well as the east and west Pacific of the northern hemisphere. The findings imply that Moon Sun tidal effects may be a prime driver in the timing of extreme weather events. However, a few good correlates do not make a theory and much additional research is required before a 9/56 year hurricane cycle can be fully supported. 

Copyright © All rights reserved. David McMinn. 2010.


Reference

UNISYS Atlantic Tropical Storm Tracking By Year. http://weather.unisys.com/hurricane/atlantic/index.html
van Gent, Robert. A Catalogue of Eclipse Cycles.
http://www.phys.uu.nl~vgent/calendar/eclipsecycles.htm

 

Appendix 1                      ATLANTIC HURRICANES: 1851 – 1928
                                                             Categories 4 & 5

Year

Active

Rank in the year (a)

Category

1853

Aug 30 – Sep 10

H #

4

1856

Aug 19 – Sep 12

1

4

1866

Sep 24 – Oct 05

6

4

1878

Sep 24 – Oct 08

7

4

1880

Aug 01 – Aug 14
Sep 27 – Oct 04

2
8

4
4

1882

Oct 05 – Oct 15

6

4

1886

Aug 12 – Aug 21

5

4

1893

Sep 27 – Oct 05

10

4

1894

Oct 11 – Oct 20

6

4

1898

Sep 25 – Oct 06

7

4

1899

Aug 03 – Sep 04

3

4

1900

Aug 27 – Sep 15

1

4

1906

Aug 25 – Sep 12

4

4

1910

Oct 09 – Oct 23

5

4

1915

Aug 05 – Aug 23

2

4

 

Sep 20 – Oct 01

6

4

1916

Aug 12 – Aug 20

6

4

1917

Sep 20 - Sep 30

4

4

1919

Sep 02 – Sep 30

4

4

1921

Oct 20 – Oct 30

2

4

1924

Oct 14 – Oct 23

10

5

1926

Jul 22 – Aug 02

1

4

 

Sep 02 – Sep 24

4

4

 

Sep 11 – Sep 11

6

4

 

Oct 14 – Oct 24

10

4

1928

Sep 06 – Sep 20

4

5

                                          ATLANTIC HURRICANES: 1929 – 2008
                                                              Categories 4 & 5

1929

Sep 22 – Oct 04

2

4

1930

Aug 31 – Sep 17

2

4

1932

Aug 12 – Aug 15

2

4

 

Aug 30 – Sep 13

4

5

 

Oct 30 – Nov 14

10

4

1933

Aug 31 – Sep 07

12

4

 

Oct 01 – Oct 09

18

4

1935

Aug 29 – Sep 10

2

5

1938

Sep 10 – Sep 22

4

5

1939

Oct 12 – Oct 18

4

4

1943

Aug 19 – Aug 27

3

4

1944

Sep 09 – Sep 16

7

4

1945

Aug 24 – Aug 29

5

4

 

Sep 12 – Sep 20

9

4

1946

Oct 05 – Oct 14

5

4

1947

Sep 04 – Sep 21

4

5

1948

Sep 04 – Sep 16

6

4

 

Oct 03 – Oct 16

8

4

1949

Aug 23 – Aug 31

2

4

 

Sep 27 – Oct 06

10

4

1950

Aug 12 – Aug 22

1

4

 

Aug 30 – Sep 17

4

5

 

Sep 08 – Sep 17

6

4

1951

Aug 12 – Aug 23

3

4

 

Sep 02 – Sep 13

5

5

1952

Oct 20 – Oct 28

7

4

1953

Aug 28 – Sep 09

4

4

1954

Oct 05 – Oct 18

9

4

1955

Aug 03 – Aug 15

2

4

 

Sep 21 – Sep 30

10

5

1956

Oct 30 – Nov 07

8

4

1957

Jun 25 – Jun 29

2

4

 

Sep 02 – Sep 24

4

4

1958

Aug 11 – Aug 22

3

5

 

Sep 21 – Oct 04

8

4

 

Sep 24 – Sep 30

9

4

1959

Sep 20 - Oct 02

8

4

1960

Aug 29 - Sep 14

5

5

 

Sep 14 – Sep 17

6

5

1961 Sep 02 - Sep 12 2 4
 

Sep 03 – Sep 16

3

5

  Sep 10 - Sep 27 5 4

 

Oct 27 – Nov 01

9

5

1963 Sep 26 - Oct 13 7 4
1964 20 Aug - Sep 05 5 4
  Aug 28 - Sep 16 6 4
  Sep 13 - Sep 25 9 4
  Sep 28 - Oct 05 10 4
1965 Aug 27 - Sep 13 3 4
1966 Sep 21 - Oct 11 3 4

1967

Sep 05 – Sep 22

2

5

1969

Aug 14 – Aug 22

3

5

1971

Sep 05 – Sep 18

6

5

1974 Aug 29 - Sep 10 6 4
1975 Sep 22 - Oct 04 7 4

1977

Aug 29 – Sep 03

1

5

1978 Aug 30 - Sep 05 6 4
  Sep 13 - Sep 20 8 4

1979

Aug 25 – Sep 08

4

5

  Aug 29 - Sep 15 6 4

1980

Jul 31 – Aug 11

1

5

1981 Sep 11 - Sep 20 8 4
1982 Sep 13 - Sep 20 5 4
1984 Sep 08 - Sep 16 5 4
1985 Sep 16 - Oct 02 7 4

1988

Sep 08 – Sep 20

8

5

  Sep 13 - Sep 30 9 4
  Oct 10 - Oct 23 11 4

1989

Aug 30 - Sep 13 7 4

Sep 10 – Sep 25

8

5

1991 Sep 04 - Sep 13 3 4

1992

Aug 16 – Aug 28

2

5

1995 Aug 08 - Aug 25 6 4
  Aug 27 - Sep 12 12 4
  Sep 27 - Oct 06 15 4
1996 Aug 19 - Sep 06 5 4
  Sep 08 - Sep 16 8 4

1998

Sep 15 - Oct 01 7 4
 

Oct 22 – Nov 09

13

5

1999 Aug 18 - Aug 25 2 4
  Aug 19 - Aug 31 3 4
  Sep 07 - Sep 19 6 4
  Sep 11 - Sep 23 7 4
  Nov 13 - Nov 23 12 4
2000 Sep 21 - Oct 04 9 4
  Sep 28 - Oct 06 11 4
2001 Oct 04 - Oct 09 9 4
  Oct 29 - Nov 06 13 4

2002

Sep 21 - Oct 04 12 4
2003 Aug 27 - Sep 09 6 4
Sep 06 - Sep 20 9 5
2004 Aug 09 - Aug 15 3 4
  Aug 25 - Sep 10 6 4

 

Sep 02 – Sep 24

9

5

  Sep 11 - Sep 28 11 4
2005 Jul 04 - Jul 18 4 4

 

Jul 11 – Jul 21

5

5

 

Aug 23 – Aug 31

11

5

 

Sep 18 – Sep 26

17

5

 

Oct 15 – Oct 26

22

5

2007

Aug 13 – Aug 23

4

5

 

Aug 31 – Sep 06

6

5

2008

Aug 25 - Sep 05

7

4

  Sep 01 - Sep 15 9 4
  Oct 13 - Oct 21 15 4
  Nov 05 - Nov 14 16 4

(a) In a given year, the first hurricane of the season is numbered 1, the second 2, the third 3, the fourth 4, etc etc.
Source of Raw Data:
UNISYS Atlantic Tropical Storm Tracking By Year.
http://weather.unisys.com/hurricane/atlantic/index.html

   

Appendix 2                                THE COMPLETE 9/56 YEAR CYCLE: 1851 – 1928
                                           
              ATLANTIC HURRICANES Category 3, 4 & 5

GRID A

 

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

Sq
01

 

 

 

 

 

 

 

 

 

 

 

1855
*

1864

1873
**

 

 

 

 

 

1857

1866
*

1875
*

1884
*

1893
*

***

1902

1911

1920

1868

1877
*

1886
*
***

1895

1904

1913

1922
*

 

 

 

 

 

 

 

1924
*

*

 

 

 

 

 

 

 

 

 

 

 

 

 

GRID B

 

 Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

Sq
15

 

 

 

 

 

 

 

 

 

1851
*

1860
*

1869
*

1878
*

*

1887
**

1826

1835

1844

1853
*

*

1862

1871
**

1880
**

1889

1898
*

1907

1916
*

****

1925

 

 

1882
*

*

1891
*

1900
*
*

1909
****

1918
*

1927
**

 

 

 

 

 

 

 

 

GRID C

 

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

Sq
29

 

 

 

 

 

 

 

 

1856
*
*

1865

1874

1883
**

1892

1901

1840

1849

1858

1867

1876
**

1885
*

1894
*

***

1903
*

1912
*

1921
*

*

1930

1939

1948

1957

1896
**

1905
*

1914

1923
*

 

 

 

 

 

 

 

 

 

 

GRID D

 

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

Sq
43

1859
*

 

 

 

 

 

 

1852
*

1861

1870
****

1879
**

1888
**

1897

1906
*

*

1915
**
*

1854
*

1863

1872

1881

1890
*

1899
*

*

1908

1917
*

*

1926
****

**

 

 

 

 

 

1910
*

1919
*

1928
*

 

 

 

 

 

 

 

 

 

 

 

Source of Raw Data: UNISYS

Appendix                                 THE COMPLETE 9/56 YEAR CYCLE: 1929 - 2008
                                                              ATLANTIC HURRICANES
Categories 4 & 5

GRID E

Sq
43

Sq
52

Sq
05

Sq
14

Sq
23

Sq
32

Sq
41

Sq
50

Sq
03

Sq
12

Sq
21

Sq
30

Sq
39

Sq
48

 

 

 

 

 

 

 

 

1931

1940

1949
**

1958
*

**

1967
*

1976

 

 

1933
**

1942

1951
*

*

1960
**

1969
*

1978
**

1987

1996
**

2005
****
*

2014

 

1971
*

1980
*

1989
*
*

1998
*

*

2007
**

2016

 

 

 

 

 

 

 

GRID F

 

Sq
01

Sq
10

Sq
19

Sq
28

Sq
37

Sq
46

Sq
55

Sq
08

Sq
17

Sq
26

Sq
35

Sq
44

Sq
53

Sq
06

 

 

 

 

 

 

 

 

 

 

 

 

 

1934

 

 

 

 

 

 

 

1936

1945
**

1954
*

1963
*

1972

1981
*

1990

1929
*

1938
*

1947
*

1956
*

1965
*

1974
*

1983

1992
*

2001
**

2010

2019

 

 

 

1985
*

1994

2003
*

*

2012

2021

 

 

 

 

 

 

 

 

 

GRID G

 

Sq
15

Sq
24

Sq
33

Sq
42

Sq
51

Sq
04

Sq
13

Sq
22

Sq
31

Sq
40

Sq
49

Sq
02

Sq
11

Sq
20

 

 

 

 

 

 

 

 

 

 

 

1930
*

1939
*

1948
**

 

 

 

 

 

1932
*

**

1941

1950
*
**

1959
*

1968

1977
*

1986

1995
***

2004
*

***

1943
*

1952
*

1961
**

**

1970

1979
*

*

1988
*

**

1997

2006

2015

 

 

 

 

 

1999
*****

2008
****

 2017

 

 

 

 

 

 

 

 

 

 

 

 GRID H

 

Sq
29

Sq
38

Sq
47

Sq
56

Sq
09

Sq
18

Sq
27

Sq
36

Sq
45

Sq
54

Sq
07

Sq
16

Sq
25

Sq
34

 

 

 

 

 

 

 

 

 

 

1935
*

1944
*

1953
*

1962

 

 

 

 

1937

1946
*

1955
*

*

1964
****

1973

1982
*

1991
*

2000
**

2009

 

1957
**

1966
*

1975
*

1984
*

1993

2002
*

2011

 

 

 

 

 

 

 

Source of Raw Data: UNISYS