INDIANAPOLIS — As expected, it's been a miserably hot and humid day, especially for areas along and south of I-70, where oppressive dewpoints in the 70s make it feel like 100-105° at this hour.
This was an area we circled for the greater storm potential today that continues to play-out with explosive storm development along a windshift axis. Some storms have prompted Severe Thunderstorm Warnings for radar-indicated large hail. These are "pulse storms" and they will continue to pulse-up and down on their path out of the state by 6-7 p.m.
Much drier air has already arrived north of Indy and the Muggy Meter turns comfortable from north-to-south in the coming hours as a refreshing north-northwesterly breeze sets-up. However, expect a hot afternoon regardless around Indy with highs in the 90s.
Overnight lows drop into the lower 60s and with dewpoints in the 40s/lower 50s, you'll be able to give the A/C another break Thursday — at least in the first part of the day. Afternoon highs will be seasonably warm but feeling so much better thanks to the much drier air that will have dewpoints 20-30° lower than today.
Friday morning will be even cooler as lows drop into the 50s for many areas away from Indy's urban heat island. Friday remains sunny and seasonably warm with highs in the 80s.
We're expecting another surge of miserably humid air this weekend, though there are some differences on timing when 70°+ air arrives. For now, we're forecasting highs Saturday in the 90-92° range but it's possible the muggiest of air doesn't hit until Saturday night into Sunday. Either way, the muggy air Sunday appears to be brief with a quick-moving cool front delivering another round of pleasantly dry air early next week with lows in the 50s and highs near 80° Monday/Tuesday.
