Mon-Thur, Aug 9-12th Heat/Humidity Event Update #2

(7:30PM - 8/11/21) A period of hot and humid conditions will continue to impact the region and state, through Thursday. Hot temperatures, high humidity and high heat indices are expected across the state and region during this period.

Summary....
A large and elongated ridge in place across the Southern to Western US, which has been helping to extend hot and humid conditions into the state and region for several day period of time, through Thursday. During this time, high temperatures will make it into the 90's for many areas across the state for several days during this period. Additionally, more of note will be the high heat index values, a product of high humidity/high dew points into the upper 70's to low 80's at time...Leading to heat index values into the 105-112 degree range for many areas for several days during this period.

Forecast For Next Two Days...
Thursday, Aug 12th Forecast...
High temperatures will range from the upper 80's to mid 90's across the state, with low temperatures ranging from the upper 60's to upper 70's. Heat index values will be in the upper 90's to low 110's. Note: Rain/t'storm could temper the heat/humidity for some areas.

​Recap Summary...
Monday, Aug 9th Recap...
Limited portions of the the state were impacted by high heat/humidity to start this multi day period. High temperatures topped out in the upper 80's to low 90's across Northwest, Western and Southwest Illinois, and low temps in the upper 60's to low 70's. Peak heat index values were in the upper 80's to upper 90's.

Tuesday, Aug 10th Recap...
High temperatures topped out in the upper 80's to low 90's across the state, and low temps in the upper 60's to upper 70's. Peak heat index values were in the low 100's to upper 110's.

JP