Illinois Storm Chasers

| August 19, 2025

Mid August Heat Wave – Tues, Aug 19th Conditions

(9:15AM – Tuesday, August 19th, 2025) Heat wave comes to an end today…Timing…•Tuesday, August 19thLocation…•Central & Southern Illinois.Discussion…•While the heat wave has now come to an end across roughly the northern half of the state, it will continue on for one final day on Tuesday across roughl

Illinois Storm Chasers

| August 18, 2025

Sat-Tue, August 16-19th – Severe T’Storm Episode – Update #6

(11:30AM – Monday, August 18th, 2025) Severe t’storm threat Monday/Monday night..Timing & Location…•Monday Midday – Tuesday Morning, August 18-19th: Northern & Central Illinois.Impacts…•A level 1 to 2 severe t’storm threat is in place across Northern and portions of Central Illinois, for the threat

Illinois Storm Chasers

| August 18, 2025

Mid August Heat Wave – Mon, Aug 18th Conditions

(9:30AM – Monday, August 18th, 2025) Hot and humid Monday, as heat wave nears and end…Timing…•Monday, August 18thLocation…•A large portion of Illinois.Discussion…•The ongoing heat wave will re-surge a bit across the state on Monday, as it nears an overall end. Across a large portion of the state, hi

Illinois Storm Chasers

| August 18, 2025

Sat-Tue, August 16-19th – Severe T’Storm Episode – Update #5

(10:45PM – Sunday, August 17th, 2025) Severe t’storm threat thru early week…Timing & Location…•Monday Morning – Tuesday Morning, August 18-19th: Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place from Monday morning through Tuesday morning across Northern and portions o

Illinois Storm Chasers

| August 17, 2025

Sat-Mon, August 16-18th – Severe T’Storm Episode – Update #4

(11:00AM – Sunday, August 17th, 2025) Continued severe t’storm threat to start the week…Timing & Location…•Monday Morning – Tuesday Morning, August 18-19th: Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place from Monday morning through Monday night/Tuesday morning acros

Illinois Storm Chasers

| August 17, 2025

Mid August Heat Wave – Sun, Aug 17th Conditions

(8:30AM – Sunday, August 17th, 2025) Heat wave continues on Sunday… 🔥 #ILWxTiming…•Sunday, August 17thLocation…•A large portion of Illinois.Discussion…•While some areas will see relief from hot and humid conditions on Sunday, thanks to t’storm outflows and a back-door front, a larger portion of the

Illinois Storm Chasers

| August 17, 2025

Sat-Mon, August 16-18th – Severe T’Storm Episode – Update #3

(11:45PM – Saturday, August 16th, 2025) Severe t’storm threat continues into early week…Timing & Location…•Saturday Night – Sunday Morning, August 16-17th: Northern & Eastern/Central Illinois.•Monday Morning – Tuesday Morning, August 18-19th: Northern & Central Illinois.Impacts…•A level 1 severe t’s

Illinois Storm Chasers

| August 16, 2025

Sat-Sun, August 16-17th – Severe T’Storm Episode – Update #2

(10:00AM – Saturday, August 16th, 2025) Severe t’storm threat today/tonight…Timing…•Saturday Morning – Sunday Morning, August 16-17th.Location…•Northern & Eastern/Central Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Eastern/Central Illinois, for the t

Illinois Storm Chasers

| August 16, 2025

Mid August Heat Wave – Sat, Aug 16th Conditions

(9:00AM – Saturday, August 16th, 2025) Hot temperatures & elevated heat indices state-wide today…Timing…•Saturday, August 16thLocation…•All of Illinois.Discussion…•The ongoing heat wave will continue on Saturday, with hot and humid conditions expected state-wide. High temperatures across the state o

Illinois Storm Chasers

| August 16, 2025

Sat-Sun, August 16-17th – Severe T’Storm Episode

(11:45PM – Friday, August 15th, 2025) Severe t’storm threat on Saturday/Saturday night…Timing…•Saturday Morning – Sunday Morning, August 16-17th.Location…•Northern & Eastern Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Eastern Illinois, for the threat

Illinois Storm Chasers

| August 15, 2025

Mid August Heat Wave – Fri, Aug 15th Conditions

(9:00AM – Friday, August 15th, 2025) Hot temperatures and low/moderate humidity today…Timing…•Friday, August 15thLocation…•All of Illinois.Discussion…•A heat wave will begin in earnest across the state today, with temperatures on the rise. High temperatures across the state today will generally rang

Illinois Storm Chasers

| August 15, 2025

Mid-August Heat Wave

(9:30PM – Thursday, August 14th, 2025) Weekend/Early Week Heat Wave Expected…Timing & Location…•Friday-Tuesday, August 15-19th: All of Illinois.Discussion…•Our next heat wave is on deck for this weekend into early next week. Hot temperatures well into the 90’s will be likely across the state on a da

Illinois Storm Chasers

| August 9, 2025

Sat-?, August 9-?th – Severe T’Storm Episode – Update #3

(11:45AM – Saturday, August 9th, 2025) Severe t’storm threat today/tonight..Timing…•Saturday Midday – Sunday Morning, August 9-10th.Location…•Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Central Illinois, for the threat of isolated

Illinois Storm Chasers

| August 9, 2025

Sat-?, August 9-?th – Severe T’Storm Episode – Update #2

(11:45PM – Friday, August 8th, 2025) Severe t’storm threat this weekend…Timing…•Saturday Morning – Sunday Morning, August 9-10th.Location…•Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Central Illinois, for the threat of isolated sev

Illinois Storm Chasers

| August 8, 2025

Sat-?, August 9-?th – Severe T’Storm Episode

(1:00PM – Friday, August 8th, 2025) Weekend severe t’storm threat…Timing…•Saturday Morning – Sunday Morning, August 9-10th.Location…•Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Central Illinois, for the threat of isolated severe t’

Illinois Storm Chasers

| August 7, 2025

Thur-Fri, August 7-8th – Severe T’Storm Episode

(11:45PM – Wednesday, August 6th, 2025) Severe t’storm threat on Thursday/Thursday night…Timing…•Thursday Morning – Friday Morning, August 7-8th.Location…•Northern & Central Illinois.Impacts…•A level 1 severe t’storm threat is in place across portions of Northern and Central Illinois, for the threat

Illinois Storm Chasers

| July 30, 2025

Thur-Thur, July 24-31st – Severe T’Storm Episode – Update #14

(10:15AM – Wednesday, July 30th, 2025) Severe t’storm threat comes to an end by tonight/Thursday morning…Timing & Location…•Wednesday Morning – Thursday Morning, July 30-31st: Much of Illinois.Impacts…•A level 1 severe t’storm threat is in place across much of Illinois from Wednesday morning through

Illinois Storm Chasers

| July 30, 2025

Thur-Thur, July 24-31st – Severe T’Storm Episode – Update #13

(11:30PM – Tuesday, July 29th, 2025) Continued severe t’storm threat thru early Thursday…Timing & Location…•Tuesday Night – Wednesday Morning, July 29-30th: Northwestern & Western Illinois.•Wednesday Morning – Thursday Morning, July 30-31st: Much of Illinois.Impacts…•A level 1 severe t’storm threat

Illinois Storm Chasers

| July 30, 2025

Late July Heat Wave – Update #10 – Wed, July 30th Conditions

(11:15PM – Tuesday, July 29th, 2025) One more hot & humid day across portions of the state on Wednesday…The ongoing heat wave will continue for one final day on Wednesday, before coming to an end. Hot and humid conditions will be found especially across portions of Central and all of Southern Illino

Illinois Storm Chasers

| July 29, 2025

Thur-Thur, July 24-31st – Severe T’Storm Episode – Update #12

(10:15AM – Tuesday, July 29th, 2025) Severe t’storm threat continues through early Thursday…Timing & Location…•Tuesday Morning – Wednesday Morning, July 29-30th: Northwestern & Western Illinois.•Wednesday Morning – Thursday Morning, July 30-31st: Much of Illinois.Impacts…•A level 1 severe t’storm th

Illinois Storm Chasers

| July 29, 2025

Thur-Thur, July 24-31st – Severe T’Storm Episode – Update #11

(11:30PM – Monday, July 28th, 2025) Continued severe t’storm threat thru mid-week…Timing & Location…•Monday Night – Tuesday Morning, July 28-29th: Northwestern & Western Illinois.•Tuesday Morning – Wednesday Morning, July 29-30th: Northern & Central Illinois.•Wednesday Morning – Thursday Morning, Ju

Illinois Storm Chasers

| July 29, 2025

Late July Heat Wave – Update #9 – Tue, July 29th Conditions

Widespread hot & humid conditions roll on for Tuesday…The ongoing heat wave will continue on Tuesday, with high temperatures will range from the upper 80°’s to upper 90°’s across the state, with heat index values of 95-115°.

Illinois Storm Chasers

| July 28, 2025

Thur-Wed, July 24-30th – Severe T’Storm Episode – Update #10

(10:15AM – Monday, July 28th, 2025) Severe t’storm threat will continue into mid-week…Timing & Location…•Monday Morning – Tuesday Morning, July 28-29th: Much of Illinois.Impacts…•A level 1 severe t’storm threat is in place across a large portion of Illinois from Monday morning through Tuesday mornin

Illinois Storm Chasers

| July 28, 2025

Thur-Tue, July 24-29th – Severe T’Storm Episode – Update #9

(11:45PM – Sunday, July 27th, 2025) Severe t’storm threat continues next couple of days…Timing & Location…•Sunday Night – Monday Morning, July 27-28th: Northwestern & Western Illinois.•Monday Morning – Tuesday Morning, July 28-29th: Northern & Central Illinois.Impacts…•A level 1 severe t’storm threa