16 
The ice chart in Figure 2.2a shows the maximum extent of the ice cover in Szczecin Lagoon 
in the very mild ice winter 1988/89. Another example of a mild ice winter is shown in Figure 
2.2b. In the period of maximum ice development in the mild ice winter 1972/73, Szczecin 
Lagoon was totally covered with ice, new ice has formed near the coast in the southern part of 
the Pomeranian Bay. 
(a) (b) 
Figure 2. 2. Maximum extent of ice cover in Szczecin Lagoon and in Pomeranian Bay in mild 
ice winters 1988/89 (a) and 1972/73 (b). 
Table 2.3. Ice conditions in the mild ice winters in the period 1961-1990 
Number: 11 (36%) 
Ice-free: Sea area 5 winters 
Szczecin Lagoon 0 winters 
Area 
Earliest first ice 
Earliest last ice 
Minimum number 
of days with ice 
Minimum duration 
of ice season 
Minimum of the 
ice thickness 
Sea coast 
08.12. 
17.12. 
1 
1 
1 cm 
Szczecin Lagoon 
22.11. 
27.11. 
1 
1 
1 cm 
Area 
Average first 
ice 
(median) 
Average last 
ice 
(median) 
Average number 
of days with ice 
(median) 
Average duration of 
ice season 
(median) 
Average max. 
ice thickness 
Sea coast 
04.01. 
22.01. 
3 
8 
2 cm 
Szczecin Lagoon 
23.12. 
16.02. 
29 
44 
10 cm 
Area 
Latest first ice 
Latest last ice 
Maximum number 
of days with ice 
Maximum duration 
of ice season 
Maximum of the 
ice thickness 
Sea coast 
28.01. 
17.02. 
13 
43 
5 cm 
Szczecin Lagoon 
21.02. 
11.03. 
57 
96 
30 cm