Tue-Sat, June 25-July 6th Severe T'Storm Threat Update #15

(10:15AM - 7/2/19) Several smaller disturbances moving through the region will bring the chance for severe t'storms to portions of the state through Saturday July 6th.

July 2nd - Tuesday Morning-Night Forecast...
Development of scattered showers and t'storms will occur during the afternoon, in the vicinity of a front across Iowa, Southern Wisconsin and Northern Illinois. This activity will then push southward across Northern Illinois into tonight. An environment characterized by high instability, high moisture and low shear will be in place. This will aide in an isolated severe t’storm threat across portions of Northern Illinois, with damaging wind and large hail being the main threats. Additional isolated to scattered showers and t’storms will develop and push across other portions of the state this afternoon into night.

July 3rd - Wednesday Morning-Night Forecast...
An isolated shower or t'storm may be possible across portions of Northern and Central Illinois Wednesday morning. New development of scattered showers and t'storms will occur during the afternoon, in the vicinity of a boundary across Iowa, Northern and Southern Illinois. This activity will then push southward across Northern and Central Illinois into Wednesday night. An environment characterized by high instability, high moisture and low shear will be in place. This will aide in an isolated severe t’storm threat across portions of Northern and Central Illinois, with damaging wind and large hail being the main threats. Additional isolated to scattered showers and t’storms will develop and push across other portions of the state Wednesday afternoon into night.

June 25th - Tuesday Morning-Night Recap...
Scattered showers and t'storms developed and pushed across portions of Northern Illinois Tuesday afternoon. Some of these t'storms were severe, with wind and hail being the main threats that occurred. Tuesday evening into Tuesday night, a complex of rain and t'storms that developed across Southern Iowa pushed across Western and Central Illinois. Severe t'storms were widespread with this activity across Western Illinois, waning with time across Central Illinois. Damaging winds and large hail occurred with this activity.

June 26th - Wednesday Morning-Night Recap...
Scattered showers and t'storms developed across Western and Southwest Illinois Wednesday afternoon. This activity grew upscale into a large complex, which pushed across portions of Central and much of Southern Illinois from the afternoon into night. Isolated to widely scattered severe t'storms occurred with this activity, producing damaging winds and large hail. Further north, scattered showers and t'storms developed across portions of Northern Illinois late in the afternoon and evening. This activity spread across portions of Northern Illinois into the night. Isolated to widely scattered t'storms occurred with this activity, producing damaging winds and large hail.

​June 27th - Thursday Morning-Thursday Night...
The southern end of a complex of rain and t'storms pushed across portions of Northern Illinois Thursday afternoon and evening. A few isolated t'storms were severe, producing damaging winds and large hail.

June 28th - Friday Morning-Friday Night Recap…
A weakening complex of rain and t'storms pushed across portions of Northern Illinois Friday morning. The western end of this complex regenerated, and moved across portions of Central and Southern Illinois during the afternoon and evening. Widely scattered severe t'storms occurred with this activity, producing damaging winds and large hail.

June 29th - Saturday Morning-Saturday Night Recap...
​Scattered t'storms developed and moved across portions of Northern and Central Illinois during the afternoon and evening. Isolated t'storms were severe, producing damaging wind and large hail.

​June 30th - Sunday Morning-Sunday Night Recap...
Two complexes of rain and severe t’storms spread across much of Northern and Central Illinois, Sunday afternoon into evening. The first complex pushed across Northern and Eastern Illinois, bringing widespread damaging winds to the area. The second complex pushed across Northwest and Western Illinois, also bringing widespread damaging winds to the area.

July 1st - Monday Morning-Night Recap...
Weakening areas of scattered showers and t'storms pushed across portions of the state during the morning into early afternoon. Additional isolated showers and t'storms developed and pushed across portions of Northern Illinois during the afternoon.

​A severe t'storm threat will likely continue into Saturday July 6th for portions of the state. Additional days will be discussed further in upcoming updates as the time approaches.

Below is the updated TAM severe t’storm forecast for this morning-tonight and Wednesday morning-night.​​​​

JP

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