The stubborn high pressure and the late spring have given the highest level of ice coverage for this time of year in the Baltic Sea since records began in the 1960′s.
Svenska Dagbladet reports: The stubborn high pressure has set a new record late date of maximum ice extent. On 29 the March, 176,000 square kilometers of the Baltic Sea surface were covered by ice.
The previous record was on 25th March 2008 when 49,000 square kilometers was present.
STSN42 ESWI 0310514/3/13
BAY OF BOTHNIA IN THE ARCHIPELAGOS UP TO 80 CM FAST ICE. AT SEA OFF THE FAST ICE EDGE IN THE WE STERN AND NORTHERN PARTS, A 15 NAUTICAL MILES WIDE AREA WITH ALTERNATING 10 – 30 CM LEVEL ICE. JUST WEST OF FARSTUGRUNDEN AND IN THE BAY OF SKELLEFTEA THERE ARE LEADS WITH OPEN WATER. EAST OF THERE, NORTH OF THE LATITUDE THROUGH BJUROKLUBB, MOSTLY 30-70 CM VERY CL OSE DRIFT ICE WITH HEAVY RIDES AND CRACKS. RIDGES, DIFFICULT TO PASS OCCUR OFF RAAHE AND FURTHER NORTHWARDS PASSING NAHKIAINEN. SOUTH OF BJUROKLUBB THE DRIFT ICE IS 30-60 CM THICK WITH RIDGES AND CRACKS. OFF THE SWEDISH COAST MOSTLY THIN LEVEL ICE AND SINGLE HEAVY FLOES. …….