F3 T6 Szałwinek Pomeranian 53°56′N 19°02′E﻿ / ﻿53.93°N 19.03°E﻿ / 53.93; 19.03﻿ (Szałwinek (July 14, F3)) 1600 22 kilometres (14 mi) A second, similarly intense tornado developed about 20 minutes after the previous one dissipated.