Hoosier Posted October 8, 2011 Share Posted October 8, 2011 So I've been working on something for a while. Everyone knows about Severeplot and how useful it can be for tornadoes since 1950 but you're usually out of luck with pre-1950 maps unless your local NWS office has done the work. So, with the help of the SPC database and the works of Tom Grazulis, I have plotted the tracks of F4/F5 tornadoes since 1900. Ratings from 1900-1949 are from Grazulis with ratings from 1950 onward courtesy of the NWS. Post 1950 ratings between Grazulis/NWS agreed in most instances with the few Grazulis-only F4's not shown below. A few notes... # of violent tornadoes from 1900-1949: 24 # of violent tornadoes from 1950-2010: 32 Decade..........violent tornado days..........# of violent tornadoes 1900's.......................1.........................................1 1910's.......................5.........................................8 1920's.......................3.........................................8 1930's.......................0.........................................0 1940's.......................6.........................................7 1950's.......................1.........................................1 1960's.......................3.........................................10 1970's.......................3.........................................11 1980's.......................2.........................................2 1990's.......................4.........................................8 2000's.......................0.........................................0 2010's.......................0.........................................0 Days with 2 or more violent tornadoes: April 3, 1974: 9 April 11, 1965: 8 June 2, 1990: 5 May 26, 1917: 4 March 28, 1920: 4 April 17, 1922: 2 March 18, 1925: 2 May 21, 1949: 2 Pre-1950 tracks were drawn to the best of my ability but are generally more subject to error. Link to comment Share on other sites More sharing options...
andyhb Posted October 8, 2011 Share Posted October 8, 2011 I'm guessing that very long-tracked one in the North Central part of the state was the Monticello F4 on 4/3/74? Link to comment Share on other sites More sharing options...
Hoosier Posted October 8, 2011 Author Share Posted October 8, 2011 I'm guessing that very long-tracked one in the North Central part of the state was the Monticello F4 on 4/3/74? yes Link to comment Share on other sites More sharing options...
andyhb Posted October 8, 2011 Share Posted October 8, 2011 Although 4/3/74 had more violent tornadoes in the state, 4/11/65 is still the standout tornado outbreak for Indiana, I'd say. Link to comment Share on other sites More sharing options...
Hoosier Posted October 8, 2011 Author Share Posted October 8, 2011 Obviously quite a few of these crossed state lines and may have done the violent damage in another state but they are counted as Indiana hits for the purpose of this thread. Link to comment Share on other sites More sharing options...
Hoosier Posted October 8, 2011 Author Share Posted October 8, 2011 Although 4/3/74 had more violent tornadoes in the state, 4/11/65 is still the standout tornado outbreak for Indiana, I'd say. 1a and 1b. Really the only thing that 4/11/65 has over 4/3/74 is the much bigger death toll. Link to comment Share on other sites More sharing options...
B-Rent Posted October 8, 2011 Share Posted October 8, 2011 Whats the track that traverses right along SR 28 in N Madison County from line to line? Link to comment Share on other sites More sharing options...
Hoosier Posted October 8, 2011 Author Share Posted October 8, 2011 Whats the track that traverses right along SR 28 in N Madison County from line to line? April 17, 1922...near Elwood through Orestes and north of Alexandria. Link to comment Share on other sites More sharing options...
B-Rent Posted October 8, 2011 Share Posted October 8, 2011 I've never read about that in Madison County history. Thanks. Link to comment Share on other sites More sharing options...
Hoosier Posted October 8, 2011 Author Share Posted October 8, 2011 I've never read about that in Madison County history. Thanks. That is one of those with some discrepancies. The path may have continued into Delaware county... Link to comment Share on other sites More sharing options...
cmichweather Posted October 8, 2011 Share Posted October 8, 2011 I'm a big fan of that SW most track with the slight bend to the north at the end , the team of researchers currently investigating still believe that it was at least a family of tornadoes with one continuous path.... no gaps. Link to comment Share on other sites More sharing options...
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