Scattered showers and thunderstorms are developing well ahead of the cold front this afternoon in our northwestern counties. These scattered storms will continue through the evening hours before the main line of stronger storms arrives to Central Indiana later tonight. Any of these evening storms will produce lightning, heavy spurts of rain and gusty winds.
The Storm Prediction Center keeps Central Indiana included in a slight risk of severe weather for the overnight hours. Notice that the moderate risk (in red) has even been extended to the very southern tip of the state. The main threats overnight will be damaging wind gusts, torrential rains and possibly an isolated tornado in a bowing segment.
Timing wise, it looks like the line of severe storms will be approaching the state line by midnight. That line could potentially be in the metro as early as 3 AM. As you can see in the storms depiction below, thunderstorms will easily still be impacting a good portion of Central Indiana at 5 AM and through 8 AM in our eastern counties.
Wrap around rain showers will keep rainfall in the forecast throughout Wednesday as temperatures start to fall. Late in the day, we could see a brief rain/snow mix and even some light, isolated snow showers before the low fully moves away.