My unofficial data has 141 Tornado Warnings issued by the @NWS for the 12z to 12z (7 AM CDT) period ending this morning (13 April 2020). This is the largest number of warnings since 285 on 2-3 March 2012. 27-28 Apr 2011 is largest on record at 450.

— daryl herzmann (@akrherz) April 13, 2020