It was another brutally hot afternoon throughout the Tri-State; afternoon highs peaked in the mid to low 90s for our third straight day with heat indices approaching and even surpassing 100° at times earlier on. As for the remainder of the evening, one can expect much of the same - temperatures will stick around the upper 80s through at least dinnertime before dipping to 80° or so by 10PM. Winds shifting southward overnight will only allow temperatures to fall as low as the mid to low 70s throughout the Ohio Valley; we'll kick off what may end up being our hottest day in years with a morning low temperature of 73° in Evansville.
The combination of southwesterly winds and a primarily clear morning and afternoon will leave us with temperatures surging to their highest point of the year thus far. The mercury in Evansville will push past 80° by 9AM and the 90° mark just before 11AM - afternoon highs on Thursday will push into the mid to even upper 90s for many of us, leaving the River City with a peak temperature of 97°. If that forecast holds, it will mark your hottest afternoon in the Tri-State in more than 4 years! The last time we dealt with temperatures this hot was on the afternoon of July 22nd of 2017 when we measured and afternoon high of 98° in Evansville! Worse yet, the sheer amount of humidity hanging in the air will make tomorrow's anticipated high of 97° feel as hot as 109° or even 110° at times. Heat like that is nothing short of dangerous; as a result, the National Weather Service has issued a Heat Advisory that will be in effect for the majority of the Tri-State from 10AM through 8PM Thursday. Please do your best to reduce the time spent outdoors tomorrow.
Additionally, a cold front approaching the Tri-State from the upper Midwest and Great Lakes will interact with our ample supply of heat and humidity here at home Thursday evening, this interaction will produce a broken line of storms advancing southward ahead of the advancing cold front. While it appears that the worst of the storms will remain primarily to our north and east, some of the storms we see between 9PM and 2AM Thursday night/Friday morning may be capable of producing damaging winds, large hail and even an isolated tornado or two. Due to the possibility of Severe Weather, the Storm Prediction Center has placed the entirety of the Tri-State under a "1" or a "2" on the Threat index for the period in question.