Today was the third day in a row not a single observation site hit 90! You have to go back to Saturday to find any 90s temperatures!
Extreme heat is building in Texas to Oklahoma with temperatures to 114 in Oklahoma today & 116 in Texas (data plots courtesy of University of Utah Mesowest network).
The heat builds north & northeastward with time. Peak of the heat should be Sunday-Monday-Tuesday period for the viewing area as a whole with highs 95-101 & heat indices 106-116.
Complex of showers & storms are likely Wednesday evening-night. Current timing is shaping up for 7 p.m.-12 a.m.
The worst of the storms & most well-defined bow is trending to hit eastern Missouri to central & southern Illinois to southwest Indiana.
That bow would tend to ride the strongest instability gradient.
However, we are under MARGINAL RISK for severe weather at the moment for isolated severe wind gusts.
An isolated shower/storm is possible Thursday, otherwise it looks dry & just a bit cooler.
Latest data suggests potential complex of storms late Friday-Friday night & one Saturday evening-night for part of the area.
We will monitor.
At this time, there is a tendency for very strong upper ridging & capping over the area Sunday-Tuesday.
Storms are likely Wednesday, however.