Probabilities of severe weather within 25 miles of any point between 8 a.m. EDT Thurs., Apr 9. and 8 a.m. Friday, Apr. 10. Climatological average probability for Indiana this time of year is 1-2 percent. Highlighted counties: County warning area of northern Indiana NWS office. Source, SPC “Day 4-8 Convective Outlook” issued April. 5