After beautiful and warm days, a new system is approaching from the plains and will bring the return of rain, with the possibility of storms and drop our temperatures significantly by the weekend. Low pressure will be moving out of the plains toward Northeast Ohio, with a cold front sliding through on Friday. This will bring a few rounds of showers and storms on Thursday and Friday.
Thursday's risk for severe weather is a conditional threat. There is some uncertainty regarding timing, the exact placement of the low pressure, and how rounds of storms interact with each other. If we have a lot of clouds and showers and storms that develop ahead of the main line/severe threat, it will be very difficult for storms to get big and strong. This looks more probable for tomorrow; however, the opposite would be true if there was more sunshine/no storms earlier in the day.