|
NS
|
NSD
|
H
|
HD
|
IH
|
IHD
|
ES
|
J-S
|
Year
|
1
|
2
|
3
|
5
|
6
|
7
|
8
|
9
|
1949
|
13
|
62
|
7
|
22
|
3
|
5.25
|
-0.16
|
-0.10
|
1950
|
13
|
98
|
11
|
60
|
8
|
18.75
|
0.57
|
1.49
|
1951
|
10
|
58
|
8
|
36
|
5
|
8.25
|
-0.31
|
0.32
|
1952
|
7
|
40
|
6
|
23
|
3
|
6.75
|
0.62
|
1.00
|
1953
|
14
|
64
|
6
|
18
|
4
|
6.75
|
0.73
|
0.55
|
1954
|
11
|
44
|
8
|
32
|
2
|
9.50
|
0.39
|
0.77
|
1955
|
12
|
82
|
9
|
47
|
6
|
17.25
|
1.20
|
1.46
|
1956
|
8
|
30
|
4
|
13
|
2
|
2.75
|
0.16
|
0.40
|
1957
|
8
|
38
|
3
|
21
|
2
|
6.50
|
-0.02
|
0.52
|
1958
|
10
|
56
|
7
|
30
|
5
|
9.50
|
0.55
|
1.28
|
1959
|
11
|
41
|
7
|
22
|
2
|
4.25
|
-0.45
|
0.06
|
1960
|
7
|
30
|
4
|
18
|
2
|
11.00
|
0.55
|
0.51
|
1961
|
11
|
71
|
8
|
48
|
7
|
24.50
|
0.94
|
0.77
|
1962
|
5
|
22
|
3
|
11
|
1
|
0.50
|
-0.31
|
0.19
|
1963
|
9
|
52
|
7
|
37
|
2
|
7.00
|
0.21
|
-0.09
|
1964
|
12
|
71
|
6
|
43
|
6
|
14.75
|
1.00
|
0.88
|
1965
|
6
|
40
|
4
|
27
|
1
|
7.50
|
-0.28
|
0.54
|
1966
|
11
|
62
|
7
|
42
|
3
|
8.75
|
-0.37
|
0.07
|
1967
|
8
|
58
|
6
|
36
|
1
|
5.75
|
0.24
|
0.75
|
1968
|
7
|
26
|
4
|
10
|
0
|
0.00
|
-0.36
|
-0.75
|
1969
|
17
|
84
|
12
|
40
|
5
|
6.75
|
0.78
|
0.55
|
1970
|
10
|
24
|
5
|
7
|
2
|
1.00
|
-0.30
|
-0.45
|
1971
|
13
|
63
|
6
|
29
|
1
|
1.00
|
-0.30
|
-0.30
|
1972
|
4
|
21
|
3
|
6
|
0
|
0.00
|
-0.64
|
-1.16
|
1973
|
7
|
33
|
4
|
10
|
1
|
0.25
|
-0.61
|
-0.80
|
1974
|
7
|
32
|
4
|
14
|
2
|
4.25
|
-0.16
|
-0.23
|
1975
|
8
|
43
|
6
|
20
|
3
|
2.25
|
0.42
|
0.34
|
1976
|
8
|
45
|
6
|
26
|
2
|
1.00
|
-0.48
|
-0.56
|
1977
|
6
|
14
|
5
|
7
|
1
|
1.00
|
-0.72
|
-0.91
|
1978
|
11
|
40
|
5
|
14
|
2
|
3.50
|
-0.04
|
-0.18
|
1979
|
8
|
44
|
5
|
22
|
2
|
5.75
|
0.06
|
-0.54
|
1980
|
11
|
60
|
9
|
38
|
2
|
7.25
|
-0.46
|
-0.68
|
1981
|
11
|
61
|
7
|
22
|
3
|
3.75
|
0.06
|
-0.34
|
1982
|
5
|
16
|
2
|
6
|
1
|
1.25
|
-0.54
|
-0.88
|
1983
|
4
|
14
|
3
|
4
|
1
|
0.25
|
-0.72
|
-1.31
|
1984
|
12
|
51
|
5
|
18
|
1
|
0.75
|
-0.72
|
-1.16
|
1985
|
11
|
51
|
7
|
21
|
3
|
4.00
|
-0.18
|
-0.50
|
1986
|
6
|
23
|
4
|
10
|
0
|
0.00
|
-0.56
|
-0.37
|
1987
|
7
|
37
|
3
|
5
|
1
|
0.50
|
-0.50
|
-0.76
|
1988
|
12
|
47
|
5
|
24
|
3
|
8.00
|
0.29
|
0.18
|
1989
|
11
|
66
|
7
|
32
|
2
|
10.75
|
0.71
|
0.58
|
1990
|
14
|
68
|
8
|
27
|
1
|
1.00
|
-0.31
|
-0.95
|
Means
|
9.9
|
47.0
|
5.9
|
23.8
|
2.25
|
5.7
|
|
|
St. dev
|
2.9
|
20.0
|
2.2
|
13.3
|
1.8
|
5.5
|
|
|
Table 1. Summary of Atlantic tropical cyclone statistics and
West African rainfall data for 1949-90. The numbered columns show yearly
incidence of 1) named storms, 2) named storm days, 3) hurricanes, 4) hurricane
days, 5) category 3-5 hurricanes, 6) category 3-5 hurricane days, 7) precipitation
anomaly expressed as standardized deviations for the early season (prior
to 1 August) rainfall, and 8) as in column 7 but for June through September
western Sahel rainfall.