UPDATE: A Severe Thunderstorm Watch is in effect for portions of central Indiana until 11 p.m. Large hail of up to two inches in diameter and 70 mph wind gusts are possible.
Some of the t-storms that move into or develop in Indiana tonight may be strong to severe with damaging wind gusts and large hail. While the tornado threat is low, it cannot be ruled out, especially across far western and southwestern Indiana where the better dynamics are. The SPC has highlighted western and southwestern Indiana in a slight risk for severe weather tonight.
Timing of t-storms will be generally after 6 or 7 p.m. starting out west. Here's a look at our high-resolution model.
The wet weather will continue to spread east into central Indiana through the night.
The rain looks to taper by Thursday morning but additional showers and t-storms will move in midday Thursday and into the late afternoon as a cold front pushes across the area. Highs will reach the upper 70s.
Friday will bring a mostly sunny sky with highs near 70 degrees. Rain will move back into the area Friday evening.
Saturday's weather for the Grand Prix will be much colder with highs only in the upper 50s as a strong trough of low pressure dips down into Indiana from the north. We'll have showers around in the morning but they should be cleared by the afternoon. Here's a preliminary look at the forecast.
Sunday looks dry and partly cloudy with highs near 60 degrees. --Danielle Dozier