How Keen Are You? Ice, Winter Waves and Swedish Surfing

During a year with normal temperatures, a normal ice winter can be expected in the Baltic – provided that no exceptional conditions occur. However, it must be stressed that there are other contributions to the actual ice condition; fluctuations in wind or temperature can improve (or deteriorate) the ice situation .
 The extent of sea ice is determined by the combination of temperature and wind conditions. The wind will make the ice more compact or more scattered, and produce ridging or ice pressure against coasts and ports.

Video of Baltic Sea winter surfing after the jump …

Persisting northeasterly or easterly windswill make the existing (and growing) sea ice drift towards the Swedish east coast. In situations with predominately westerly or southwesterly winds, easy ice conditions are likely on the Swedish side of the Baltic while the ice becomes more compact further east. On the contrary, southwesterly winds on the Swedish west coast means that slush or shuga may compact in the harbours and along the coast. Conditions on Skagerrak are slightly different, as ice from the Kattegat will drift northwards with the coastal currents with deteriorating ice conditions as a result.