Wed-Sun, July 17-21st Heat Wave Update #8

(9:15PM - 7/19/19) A multi-day heat wave will continue to affect the state through Sunday, with widespread hot and humid conditions are likely.

7/20/19 - Saturday/Night Forecast...
High temperatures on Saturday will likely reach the low to upper 90's across much of the state, with isolated temperatures around 100 possible. Heat index readings will range from 100-120 across the state. Low temperatures Saturday night will stay in the 70's for much of Central and Southern Illinois, with temperatures closer to 80 or in the low 80's possible for the more urban areas, such as St. Louis. A cold front, and associated rain and t'storms, will likely push into portions of Northern Illinois Saturday afternoon into night, leading to cooler low temperatures across this area...and an end to the heat wave for Northern Illinois.

7/21/19 - Sunday/Night Forecast...
The aforementioned cold front with showers and t'storm pushing across Northern Illinois later Saturday, will also push into Central Illinois beginning Sunday morning, ending the heat wave for Central Illinois. High temperatures on Sunday will likely reach the low to mid 90's Southern Illinois, with heat index readings ranging from 100-115.

​7/17/19 - Wednesday/Night Recap...
High temperatures on Wednesday were in the upper 80's to mid 90's across much of the state, with heat indices between 90-105. Low temperatures Wednesday night were in the upper 60's to mid 70's.

7/18/19 - Thursday/Night Recap...
High temperatures on Thursday were in the upper 80's to mid 90's across much of the state, with heat indices between 95-110. Low temperatures Thursday night were in the mid 70's to low 80's across much of the state.

​​Below is the TAM heat and humidity forecast through Sunday.

​JP

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