Index Page 
3 
1. Ice observation data in Szczecin Lagoon and Pomeranian Bay 
in the period 1961-1990 4 
1.1. Ice conditions 6 
1.2. Statistical characteristics 10 
2. Classification of ice winters in the area of the Polish-German 
border waters 13 
2.1. Meteorological and ice conditions in mild winters in the 
period 1961 - 1990 14 
2.1.1. The meteorological conditions in the mild ice 
winter of 1988/89 14 
2.1.2. Characteristics of the 1988/89 ice season in the area 
of Szczecin Lagoon 15 
2.2. Meteorological and ice conditions in moderate winters in the 
period 1961-1990 17 
2.2.1. The meteorological conditions in the moderate ice 
winter of 1976/77 17 
2.2.2. Characteristics of the 1976/77 ice season in the areas 
of Szczecin Lagoon and Pomeranian Bay 19 
2.3. Meteorological and ice conditions in strong to extremely 
strong winters in the period 1961 - 1990 21 
2.3.1. The meteorological conditions in the very strong ice 
winter of 1986/87 21 
2.3.2. Characteristics of the 1986/87 ice season in the areas 
of Szczecin Lagoon and Pomeranian Bay 23 
2.4. Comparison of the air temperatures and the ice conditions 
in the different ice winter severity types 24 
3. Thin ice growth in the area of Szczecin Lagoon 29 
4. References 36