(11:45AM - 5/26/19) Another storm system pushing across the region will bring another multi-day period of severe weather potential to portions of the state Friday through Sunday.
On Friday, weakening areas of showers and t'storms pushed across Northern Illinois Friday morning into early afternoon. The far southern end of this activity regenerated along the warm front in Central Illinois during the afternoon, producing a small window of severe t'storms. Additional isolated t'storms, some severe, occurred across portions of Northwest and Western Illinois during the evening. Another complex of showers and t'storms then pushed across portions of Northern and Central Illinois Friday night.
On Saturday, weakening areas of showers and t'storms occurred across portions of Northern and Central Illinois during the morning. In the wake of this activity, a complex of showers and t'storms that developed across Missouri and Iowa during Saturday afternoon and evening pushed into Western Illinois early Saturday night. This activity spread across portions of Northern and Central Illinois Saturday night, bringing an isolated to widely scattered severe t'storm threat to these areas. Wind and hail were the main threats seen.
Sunday morning through Sunday night...
Areas of scattered showers and isolated t’storms have been ongoing across portions of Northern and Central Illinois this morning, with this activity expected to last into the afternoon for some areas. Renewed development of scattered showers and t’storms are likely to develop in the vicinity of a front and outflow boundaries across portions of Southern Illinois this afternoon, which will continue into Sunday evening for these areas. An environment in place featuring low instability, good moisture and good shear will be in place. This environment will help support an isolated severe t’storm threat across portions of Southern Illinois. Wind and hail will be the main threats. Additional periods of scattered showers and t’storms from activity occurring across states to the west will also push across portions of Northwest and Western Illinois late tonight.
Below is the updated TAM severe weather forecast for the final day of this multi-day event.
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