We have a LONG stretch of heat & humidity ahead.
Eventually, the dew points will drop as the soil dries, but in the meantime, get used to 75-80 dew points!
Combine this with temperatures climbing to the 90s & the result is dangerous heat.
The bigger story is the duration of the heat. We are looking at potentially the longest stretch of 90s with heat indices of at least 100 since 2012.
Scattered pulsey storms continue to slowly move north-northeastward throught the viewing area in very oppressive airmass with dew points 74-80 & current temperatures of 88-91 outside of any storms. Where it is storming, temperatures are in the 70s to lower 80s.
The heat indices are running generally 97-105 currently.
Scattered slow-moving, pulsey storms are likely this evening & some even into tonight at times. There is the risk of an isolated severe storm & for locally-heavy rainfall. Brief patchy fog is possible. It will be muggy with lows near 73.
Pronounced MCV (after complex of heavy, intense storms over Missouri) will very slowly pivot through Illinois tomorrow. Scattered storms will develop with risk of an isolated severe storm or two here. Locally-heavy rainfall is possible in a very oppressive airmass.
Highs will run 87-91 with heat indices 97-105.
A secondary MCV from intense, heavy storm complex in Iowa & Missouri will bring some scattered storms Wednesday.
Hot upper ridge should build in with capping late week & through the weekend. Highs in the 90s with heat indices around 100 to 110 are likely.
Any storm that can develop would be isolated pop or due in the intense heating of the afternoon-evening or if we can get a ridge rider to blast in from the northwest or north.
I may end up putting some 20% pops in a few days Thursday-next Tuesday.
After Wednesday, rainfall coverage does not look to reach 40% again until mid to late next week. Some heat relief will follow briefly. This will be followed by lots of hot, humid weather in latter July with a bit below normal rainfall.
At the same time, the tropics will really ramp up in activity.