Mon-Thur, May 27-30th Severe weather Threat Update #9

(10:30AM - 5/30/19) Another storm system pushing across the region is bringing another multi-day period of severe weather potential to portions of the state Monday through Thurssday.

Monday recap...
On Monday, areas of showers and t'storms moved across portions of Northern and Central Illinois during the morning into early afternoon. In the wake of this activity, scattered shower and t'storm development occurred, with a numerous storms being severe, across much of Northern and portions of Central Illinois. All modes of severe weather occurred, including some tornadoes.

Tuesday recap...
​On Tuesday, areas of showers and t'storms moved across portions of Northern and Central Illinois during the morning into early afternoon. In the wake of this activity, scattered shower and t'storm development occurred across Central Illinois, with widely scattered to scattered t'storms having been severe. Wind and hail were the main threats seen with this activity. Additionally, large complexes of rain and t'storms push across much of Northern and Central Illinois Tuesday evening through Tuesday night. Widely scattered severe t'storms occurred with this activity, with wind and hail being the main threats that were seen.

Wednesday recap...
On Wednesday, areas of showers and t'storms moved across portions of Eastern and Southern Illinois during the morning. In the wake of this activity, scattered shower and t'storm development occurred across Central and Southern Illinois during the afternoon and evening, with isolated scattered to widely scattered t'storms having been severe. Wind and hail were the main threats seen with this activity. Additionally, a large complexes of rain and t'storms push across much of the state Wednesday evening and Wednesday night. Isolated to widely scattered severe t'storms occurred with this activity across Central and Southern Illinois, with wind and hail being the main threats that were seen.

This morning through tonight...
Areas of showers and t'storms that occurred across Northeast, Eastern and Southern Illinois earlier this morning have since exited the state to the east. In the wake of the early activity, clearing and destabilization will occur across the state. Additional isolated to scattered showers and t'storms will develop across the state during the afternoon, continuing into early tonightOf focus will be near and front and low pressure that will be sliding southeastward across Northern and Central Illinois. An environment in place featuring low instability, good moisture and decent shear will be in place. This environment will help support an isolated severe t’storm threat across Northern and Central Illinois Thursday afternoon into evening. All modes of severe weather are possible with any storm that reaches severe limits, though the threat is low overall.

Below is the updated TAM severe weather forecast for the last day of this multi-day event.

​JP

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