Mon-Wed, May 27-29th Severe Weather Threat Update #4

(9:45PM - 5/27/19) Another storm system pushing across the region is bringing another multi-day period of severe weather potential to portions of the state Monday through Wednesday.

Tonight...
An isolated shower and t'storm is possible across portions of Northern and Central Illinois tonight. An environment in place featuring moderate instability, good to great moisture and good shear will be in place. This environment will help support an isolated severe t’storm threat across Northern and Central Illinois. Wind and hail will be the main threats should any storm reach severe limits.

Tuesday morning through Tuesday night...
An isolated to scattered shower and t'storm will be likely across portions of Northern and Central Illinois Tuesday morning into the early afternoon. In the wake of the aforementioned earlier activity, development of an isolated shower and t'storm will also be possible in the vicinity of a front across Central Illinois during the afternoon and evening. An environment in place featuring moderate instability, good to great moisture and meager shear will be in place. This environment will help support an isolated severe t’storm threat across portions of Central Illinois during the afternoon into evening. Wind and hail will be the main threats. A large complex of showers and t’storms from activity occurring across states to the west will also push across much of the state Tuesday evening into night. An environment in place featuring moderate instability, good to great moisture and good shear will be in place. This environment will help support an isolated to scattered severe t’storm threat across a good portion of the state Tuesday evening into night. Wind and hail will be the main threats.

Wednesday morning through Wednesday night...
Isolated to scattered shower and t'storms will be ongoing across a good portions of the state Wednesday morning into early afternoon. Development of an isolated shower and t'storm will also be possible in the vicinity of a front across Central Illinois during the afternoon and evening. An environment in place featuring low to moderate instability, good moisture and good shear will be in place. This environment will help support an isolated severe t’storm threat across portions of Central Illinois during the afternoon and evening. Wind and hail will be the main threats. Additional periods of showers and t’storms from activity occurring across states to the west will also push across much of Central and Southern Illinois Wednesday evening into night. An environment in place featuring low to moderate instability, good moisture and good shear will be in place. This environment will help support an isolated scattered severe t’storm threat across Centrla and Southern Illinois Wednesday evening into night. Wind and hail will be the main threats.

Below are the updated TAM severe weather forecasts for each upcoming day of this multi-day event.

​JP

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