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(11:45AM - 9/20/21) A storm system moving through the region will bring severe t'storm potential to portions of the state, this evening through Tuesday morning.
Summary... A storm system moved through the Plains and into the Midwest Sunday night into this morning, and will push through the Midwest and Great Lakes this afternoon through Tuesday. This storm system will bring severe t'storm potential to portions of the state, this evening through early Tuesday morning.
Forecast...
Monday Evening - Tuesday Morning, Sept 20-21st... As a storm system moves through the Midwest and Great Lakes today into Tuesday, a cold front will sweep eastward across the state, from this evening through Tuesday morning. Scattered showers and t'storms are expected to develop this afternoon along this cold front across portions of Southern Minnesota, Iowa and Northern Missouri. This activity will then move eastward and across a large portion of the state, from this evening into Tuesday morning. An environment favorable for some severe t'storm potential will be in place across a large portion of the state ahead of this activity. This environment will feature low instability of 500-2,000J/KG, dew points in the low 60's to low 70's, modest, good forcing, and modest lapse rates of 5.5-7.0C. This environment will be supportive of upwards of an isolated severe t'storm risk (level 1) across a large portion of the state. Damaging winds and hail will be the severe weather threats, though an isolated tornado can't be ruled out. Below are the severe t'storm forecast for this event. 
JP
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(9:00PM - 9/19/21) A storm system moving through the region will bring severe t'storm potential to portions of the state, Monday evening through Tuesday morning.
Summary... A storm system moving through the Plains and into the Midwest tonight into Monday morning, will push through the Midwest and Great Lakes Monday afternoon through Tuesday. This storm system will bring severe t'storm potential to portions of the state, Monday evening through early Tuesday morning.
Forecast...
Monday Evening - Tuesday Morning, Sept 20-21st... As a storm system moves through the Midwest and Great Lakes Monday into Tuesday, a cold front will quickly sweep eastward across the state, from Monday evening through Tuesday morning. Scattered showers and t'storms are expected to develop Monday afternoon along this cold front across portions of Southern Minnesota, Iowa and Northern Missouri. This activity will then move eastward and across a large portion of the state, from Monday evening into Tuesday morning. An environment favorable for some severe t'storm potential will be in place across a large portion of the state ahead of this activity. This environment will feature low instability of 500-2,000J/KG, dew points in the low 60's to low 70's, modest, good forcing, and modest lapse rates of 5.5-7.0C. This environment will be supportive of upwards of an isolated severe t'storm risk (level 1) across a large portion of the state. Damaging winds and hail will be the severe weather threats, though an isolated tornado can't be ruled out. Below are the severe t'storm forecast for this event. 
JP
(8:00PM - 9/8/21) A brief recap of the Tue, Sept 7th severe t'storm event that affected the state and region.
Recap Summary... A storm system moved through the Midwest Monday night, and then pushed through the Great Lakes on Tuesday. This storm system brought widespread severe t'storms to portions of the state and region, producing widespread large hail and damaging winds.
Daily Recap...
Tuesday Morning - Tuesday Night, Sept 7th... Scattered showers and t'storms developed Tuesday morning across Central and Southern Wisconsin, ahead of a cold front advancing southeastward, many of these t'storms having been severe. Additional back-building of showers and t'storms occurred ahead of the same advancing cold front across Northwest and Western Illinois early Tuesday afternoon. This activity then pushed southeastward across Northern and Central Illinois Tuesday afternoon into Tuesday night, with scattered t'storms having been severe, producing widespread damaging winds and large hail. 
JP
(11:45AM - 9/7/21) A storm system moving through the region will bring severe t'storm potential to a large portion of the state, late this morning through early tonight.
Summary... A storm system moved through the Midwest last night, and will push through the Great Lakes today. This storm system will bring severe t'storm potential to portions of the state, late this morning through early tonight.
Forecast...
This Morning - Tonight, Sept 7th... As a storm system moves through the Great Lakes today, a cold front will quickly sweep southeastward across the state, from late this morning through tonight. Scattered showers and t'storms have developed along this front across portions of Southern Wisconsin this morning, with additional development expected along this front across Southern Wisconsin and Northern Illinois through early this afternoon. This activity will then quickly move southeastward across a large portion of the state, from early this afternoon into early tonight. An environment favorable for severe t'storms will be in place across a large portion of the state ahead of this activity. This environment will feature moderate instability of 1,500-3,500J/KG, dew points in the low to upper 60's, high shear, ample forcing, and high lapse rates of 6.5-8.5C. This environment will be supportive of upwards of an isolated to scattered severe t'storm risk (levels 1-3) across a large portion of the state. Damaging winds and hail will be the severe weather threats, though an isolated tornado can't be ruled out. Below are the severe t'storm forecasts for this event. 
JP
(9:15PM - 9/6/21) A storm system moving through the region will bring severe t'storm potential to a large portion of the state, late Tuesday morning into early Tuesday night.
Summary... A storm system moving through the Midwest tonight, will push through the Great Lakes on Tuesday. This storm system will bring severe t'storm potential to portions of the state, late Tuesday morning through early Tuesday night.
Forecast...
Tuesday Morning - Tuesday Night, Sept 7th... As a storm system moves through the Great Lakes on Tuesday, a cold front will quickly sweep southeastward across the state, from late Tuesday morning through early Tuesday night. Scattered showers and t'storms are expected to develop along this front across portions of Southern Wisconsin and Northern Illinois, late Tuesday morning and early Tuesday afternoon. This activity will then quickly move southeastward across a large portion of the state, from early Tuesday afternoon into early Tuesday night. An environment favorable for severe t'storms will be in place across a large portion of the state ahead of this activity. This environment will feature moderate instability of 1,500-3,500J/KG, dew points in the low to upper 60's, high shear, ample forcing, and high lapse rates of 6.5-8.5C. This environment will be supportive of upwards of an isolated to sporadic severe t'storm risk (levels 1-2) across a large portion of the state. Damaging winds and hail will be the severe weather threats, though an isolated tornado can't be ruled out. Below are the severe t'storm forecasts for this event. 
JP
(8:00PM - 9/2/21) A heat wave spanning over a several day period impacted portions of the region and the state, Aug 23-29th. This period brought multiple days with high temperatures well into the 90's and heat indices into the 100's for many areas. Summary.... A heat wave impacted to region and state during late August. A large and elongated ridge was in place across the Central to Eastern US, which is helped to extend hot and humid conditions into the state and region for several day period of time. During this time, high temperatures made it into the 90's for many areas across the state for several days during this period. Additionally, heat index values were high, a product of high humidity/high dew points into the low 70's to low 80's...Leading to heat index values into the 95-110 degree range for many areas for several days during this period. An active storm pattern was also in place, which tempered conditions at times across portions of the state.  Recap Summary... Monday, Aug 23rd Recap... High temperatures topped out in the upper 80's to mid 90's across Central and Southern Illinois, and low temps in the low 60's to low 70's. Peak heat index values peaked in the low to upper 90's. Tuesday, Aug 24th Recap... High temperatures topped out in the low to upper 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the upper 90's to low 110's. Wednesday, Aug 25th Recap... High temperatures topped out in the low to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to upper 70's. Peak heat index values peaked in the upper 90's to upper 100's. Thursday, Aug 26th Recap... High temperatures topped out in the upper 80's to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the mid 90's to upper 100's. Friday, Aug 27th Recap... High temperatures topped out in the upper 80's to mid 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the mid 90's to upper 100's. Saturday, Aug 28th Recap... High temperatures topped out in the upper 80's to mid 90's across the state, and low temps in the upper 60's to mid 70's. Peak heat index values peaked in the low 90's to mid 100's. Sunday, Aug 29th Recap... High temperatures topped out in the upper 80's to low 90's across Central and Southern Illinois, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the low 90's to low 100's. JP
(6:00AM - 8/29/21) A period of hot and humid conditions will continue across the region, though today. Hot temperatures, high humidity and high heat indices have occurred across the state and region during this period.
Summary.... A large and elongated ridge is in place across the Central to Eastern US, which is helping to extend hot and humid conditions into the state and region for several day period of time, through today. During this time, high temperatures have made it into the 90's for many areas across the state for several days during this period. Additionally have been the high heat index values, a product of high humidity/high dew points into the low 70's to low 80's...Leading to heat index values into the 95-110 degree range for many areas for several days during this period.
Forecast For Next Two Days...
Sunday, Aug 29th Forecast... High temperatures will range from the mid 80's to low 90's across the state, with low temperatures ranging from the mid 60's to mid 70's. Heat index values will peak in the low 90's to low 100's. Note: Rain/t'storm could temper the heat/humidity for some areas. 
Recap Summary...
Monday, Aug 23rd Recap... High temperatures topped out in the upper 80's to mid 90's across Central and Southern Illinois, and low temps in the low 60's to low 70's. Peak heat index values peaked in the low to upper 90's. Tuesday, Aug 24th Recap... High temperatures topped out in the low to upper 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the upper 90's to low 110's. Wednesday, Aug 25th Recap... High temperatures topped out in the low to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to upper 70's. Peak heat index values peaked in the upper 90's to upper 100's. Thursday, Aug 26th Recap... High temperatures topped out in the upper 80's to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the mid 90's to upper 100's. Friday, Aug 27th Recap... High temperatures topped out in the upper 80's to mid 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the mid 90's to upper 100's. Saturday, Aug 28th Recap... High temperatures topped out in the upper 80's to mid 90's across the state, and low temps in the upper 60's to mid 70's. Peak heat index values peaked in the low 90's to mid 100's.
JP
(8:45PM - 8/27/21) A period of hot and humid conditions will continue across the region, impacting the state through this weekend. Hot temperatures, high humidity and high heat indices are expected across the state and region during this period.
Summary.... A large and elongated ridge is in place across the Central to Eastern US, which is helping to extend hot and humid conditions into the state and region for several day period of time, through this weekend. 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 of note will be the high heat index values, a product of high humidity/high dew points into the low 70's to low 80's...Leading to heat index values into the 95-110 degree range for many areas for several days during this period.
Forecast For Next Two Days...
Saturday, Aug 28th 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 mid 70's. Heat index values will peak in the mid 90's to mid 100's. Note: Rain/t'storm could temper the heat/humidity for some areas. Sunday, Aug 29th Forecast... High temperatures will range from the upper 80's to low 90's across the state, with low temperatures ranging from the upper 60's to mid 70's. Heat index values will peak in the mid 90's to low 100's. Note: Rain/t'storm could temper the heat/humidity for some areas.
Recap Summary...
Monday, Aug 23rd Recap... High temperatures topped out in the upper 80's to mid 90's across Central and Southern Illinois, and low temps in the low 60's to low 70's. Peak heat index values peaked in the low to upper 90's. Tuesday, Aug 24th Recap... High temperatures topped out in the low to upper 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the upper 90's to low 110's. Wednesday, Aug 25th Recap... High temperatures topped out in the low to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to upper 70's. Peak heat index values peaked in the upper 90's to upper 100's. Thursday, Aug 26th Recap... High temperatures topped out in the upper 80's to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the mid 90's to upper 100's.
JP
(8:45PM - 8/26/21) A period of hot and humid conditions will continue across the region, impacting the state through this upcoming weekend. Hot temperatures, high humidity and high heat indices are expected across the state and region during this period.
Summary.... A large and elongated ridge is in place across the Central to Eastern US, which is helping to extend hot and humid conditions into the state and region for several day period of time, through this upcoming weekend. 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 of note will be the high heat index values, a product of high humidity/high dew points into the low 70's to low 80's...Leading to heat index values into the 95-110 degree range for many areas for several days during this period.
Forecast For Next Two Days...
Friday, Aug 27th Forecast... High temperatures will range from the upper 80's to mid 90's across the state, with low temperatures ranging from the mid 60's to mid 70's. Heat index values will peak in the mid 90's to mid 100's. Note: Rain/t'storm could temper the heat/humidity for some areas. Saturday, Aug 28th Forecast... High temperatures will range from the upper 80's to mid 90's across the state, with low temperatures ranging from the mid 60's to mid 70's. Heat index values will peak in the mid 90's to mid 100's. Note: Rain/t'storm could temper the heat/humidity for some areas.
Recap Summary...
Monday, Aug 23rd Recap... High temperatures topped out in the upper 80's to mid 90's across Central and Southern Illinois, and low temps in the low 60's to low 70's. Peak heat index values peaked in the low to upper 90's. Tuesday, Aug 24th Recap... High temperatures topped out in the low to upper 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the upper 90's to low 110's. Wednesday, Aug 25th Recap... High temperatures topped out in the low to upper 90's across all but Northwest Illinois, and low temps in the mid 60's to upper 70's. Peak heat index values peaked in the upper 90's to upper 100's.
JP
(7:15PM - 8/25/21) A period of hot and humid conditions will continue across the region, impacting the state through this upcoming weekend. Hot temperatures, high humidity and high heat indices are expected across the state and region during this period.
Summary.... A large and elongated ridge is in place across the Central to Eastern US, which is helping to extend hot and humid conditions into the state and region for several day period of time, through this upcoming weekend. 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 of note will be the high heat index values, a product of high humidity/high dew points into the mid 70's to low 80's...Leading to heat index values into the 100-110 degree range for many areas for several days during this period.
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Forecast For Next Two Days...
Thursday, Aug 26th Forecast... High temperatures will range from the upper 80's to mid 90's across the state, with low temperatures ranging from the mid 60's to mid 70's. Heat index values will peak in the mid 90's to upper 100's. Note: Rain/t'storm could temper the heat/humidity for some areas. Friday, Aug 27th Forecast... High temperatures will range from the upper 80's to mid 90's across the state, with low temperatures ranging from the mid 60's to mid 70's. Heat index values will peak in the mid 90's to upper 100's. Note: Rain/t'storm could temper the heat/humidity for some areas.
Recap Summary...
Monday, Aug 23rd Recap... High temperatures topped out in the upper 80's to mid 90's across Central and Southern Illinois, and low temps in the low 60's to low 70's. Peak heat index values peaked in the low to upper 90's. Tuesday, Aug 24th Recap... High temperatures topped out in the low to upper 90's across the state, and low temps in the mid 60's to mid 70's. Peak heat index values peaked in the upper 90's to low 110's.
JP
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