16
Table 3.4. Number of hours in which water levels reached or exceeded 560 cm or 580 cm
in the seasons of 1976-2000
Seasons
Wismar
Warnemünde
Sassnitz
Swinoujscie
Kotobrzeg
>560
>580
>560
>580
>560
>580
>560
>580
>560
>580
1975/76
126
39
116
35
98
11
178
36
279
54
1976/77
50
8
39
5
16
2
57
16
22
9
1977/78
79
15
62
11
65
12
81
22
150
28
1978/79
243
155
215
110
106
43
56
0
126
43
1979/80
30
19
27
17
28
1
35
0
23
0
1980/81
127
44
148
26
133
2
206
9
226
22
1981/82
163
62
183
52
198
20
349
81
361
89
1982/83
136
56
140
57
244
74
262
73
347
91
1983/84
145
65
129
60
155
51
149
61
277
56
1984/85
63
28
48
17
16
0
39
6
23
1
1985/86
73
7
48
0
34
0
45
9
64
9
1986/87
258
130
225
102
177
62
177
57
156
35
1987/88
154
54
90
19
24
1
23
0
32
0
1988/89
204
76
142
56
86
28
151
60
188
79
1989/90
231
103
184
70
127
20
232
57
286
84
1990/91
141
19
57
13
24
5
22
7
21
5
1991/92
142
57
94
36
129
27
112
28
196
59
1992/93
94
33
79
29
71
15
219
45
206
61
1993/94
97
31
54
19
50
0
53
0
45
0
1994/95
138
70
109
51
84
28
168
52
193
61
1995/96
200
94
155
69
81
29
128
45
105
47
1996/97
97
32
77
16
36
9
56
13
60
22
1997/98
144
54
124
42
59
3
112
12
166
18
1998/99
66
5
39
0
15
0
39
2
150
19
1999/00
168
61
159
44
81
17
183
33
258
42
The maximum annual (seasonal) totals were recorded in the eastern part in 1981/82: they
reached 361 hours at Kotobrzeg, 349 hours at Swinoujscie above or equal to the 560 cm. In
the western part of the coast, the maximum annual totals were reached in the 1986/87
season: the number of hours with levels exceeding 560 cm was as high as 258 in Wismar,
and 225 in Warnemünde. At Sassnitz, the longest duration of sea levels above or equal to
560 cm was recorded in the season of 1982/83 (244 hours).
In the western part of the coast, annual maxima of the total number of hours with levels
exceeding 580 cm were observed during the 1978/79 season (at Wismar 155 hours and at
Warnemünde 110 hours). 1982/83 was the most dangerous season at Sassnitz (74 hours
with sea levels equal to or above 580 cm) and at Kolobrzeg (91 hours with sea levels equal
to or above 580 cm).
Only in 4 out of the 25 seasons studied were no hours recorded in which the value of 580 cm
was exceeded.
The last 10 years of the past century were rather similar regarding the length of the periods
during which defined surge levels were exceeded, both in successive seasons and at
particular water gauges, although in the central part of the coast the periods with water levels
above the 560 cm level were somewhat longer than in the western part of the southern Baltic
Sea coast.
