https://ilmatieteenlaitos.fi/tutkimustoiminta/-/asset_publisher/Dz9C/content/uutta-tietoa-pohjois-euroopan-ukkosista?redirect=http%3A%2F%2Filmatieteenlaitos.fi%2Ftutkimustoiminta%3Fp_p_id%3D101_INSTANCE_Dz9C%26p_p_lifecycle%3D0%26p_p_state%3Dnormal%26p_p_mode%3Dview%26p_p_col_id%3Dcolumn-2%26p_p_col_count%3D1] An all-time record of 37 Coulomb on July 29, 2010, is also the Finnish nationwide heat record.