Sat-Tue, July 13-16th Heat Wave Update #2

(8:00AM – Sunday, July 14th, 2024) As extends from the Inter-Mountain West into the Central U.S., a multi-day period of hot and humid conditions will continue across the region and state. These conditions are expected over a multi-day period from through Tuesday, July 13-16th.

Timing & Location…
•Saturday, July 13th – Tuesday, July 16th: All Of Illinois.

Impacts…
•Daily high temperatures in the upper 80’s to upper 90’s can be expected across much of the state.
•Daily heat index values between 95-110 can be expected across much of the state.
•Daily shower/t’storm chances across portions of the state will temper conditions in some areas at times.

Discussion…
•A ridge that that been in place across the Western U.S. is becoming reorganized in the Inter-Mountain West, and is centering out into the Central U.S. This will continue to bring a multi-day period of hot and humid conditions to the state from through Tuesday. Daily chances of showers/t’storms across the state may temper conditions for some areas at times. This period will feature the most humid conditions and highest heat index values of the summer to date.

Short Term/Three-Day Forecast…
•Sunday, July 14th: High temperatures of 87-97 across the state, with peak heat indices of 93-107.
•Monday, July 15th: High temperatures of 87-100 across the state, with peak heat indices of 93-110.
•Tuesday, July 16th: High temperatures of 86-95 across Central and Southern Illinois, with peak heat indices of 93-107.

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