Tornadoes are not that rare of a thing in Delaware. Since 1954 Delaware has seen 62 documented tornadoes. That’s equivalent to about 1-2 a year, but they do happen. Most of Delaware’s tornadoes have been F-2 on the Fujita scale which measures the intensity of tornadoes. There has been one F-3 which happened in April of 1961. There have been a total of 3 fatalities. Yet, the data only goes to 2015 but since then we probably haven’t recorded another one. I have to check that data.
Delaware is mostly a coastal plain. 90% of the state is “FLAT”, but not Oklahoma flat. The terrain is vast and does have some hilly areas. The northern part of the state is called the Piedmont which his hilly, and elevated. Most of Delaware’s tornadoes have been in the southern part of the state from Dover on south. So, in the summer when heavy hitter storms are coming they can produce a tornado, but most are straight line winds. The debris field form a tornado and from straight line winds is quite vast and you know the difference within minutes of inspecting the damage. Tornadoes are devastating occurrences . Yet, the warning systems available sill aren’t good enough. That is one area which would save lots of lives.
I am posting the link to the Delaware Project: Tornadoes. It’s a fantastic study: