Montfort Limburg 51°08′N 5°57′E﻿ / ﻿51.13°N 5.95°E﻿ / 51.13; 5.95﻿ (Montfort (June 7, F?)) 1800 Unknown Several homes sustained roof damage Germany F1 T2 Grefrath Nordrhein-Westfalen 51°20′N 6°20′E﻿ / ﻿51.34°N 6.34°E﻿ / 51.34; 6.34﻿ (Grefrath (June 7, F1)) 1915 2.2 kilometres (1.4 mi) Tornado damaged several homes and trees Sources: ESSL Severe Weather Database