Last four weeks “coldest in a century”

The last four weeks were the coldest in a hundred years, according to the Czech Meteorological Institute. Temperatures in the period between March 11 and April 7 averaged -1 degree Celsius, the lowest temperatures on record since 1912 when nationwide measuring began. Meteorologists said the unusually cold start of spring was due to strong jet streams over the Atlantic which created cyclones that brought cold air to central Europe from Scandinavia and Russia.