Tornado Watch no longer in effect – showers/t-storms move off to the east
Update 3PM CDT…
The Tornado Watch for the Chicago area is no longer in effect.
The occluded front and associated band of showers and strong to severe thunderstorms has moved off to the east. Slowly-weakening cyclonic circulation will continue around the low pressure as it moves into western Wisconsin and eventually Ontario, Canada.
As a result, the Chicago area may still experience periodic cloudiness and a few showers across our area through the overnight hours into Friday morning, when we may get a mix of wet snow in spots, as colder air reaches into northern Illinois and northwest Indiana.
Update 12:50PM CDT…
As the occluded frontal boundary approaches from the west, numerous showers and thunderstorms have blossomed over northeast Illinois into northwest Indiana. Showers and thunderstorms are moving rapidly northeast (55 to 60 mph). Short-lived winds gusting 50 to 60 mph can occur out of any of the stronger storm cells as the area progresses east in the next few hours.
Tree limb damage has been reported in the Calumet Heights area, quarter-sized hail occurred near Shorewood in Will County and there have been numerous sightings of pea to 3/4-inch hail.
The Tornado Watch remains in effect for most of the Chicago area until 5PM CDT.
Update 11:30AM CDT…
Individual showers and thunderstorms continue to develop and move northeast at 50 to 60 mph. Several reports of pea-sized hail have been received, including near Homewood, the Will County Public Safety complex and Dwight. Wind gusts in excess of 50 mph will likely accompany some of the stronger thunderstorm cells.
As the center of low pressure moves northeast out of Iowa, the associated occluded front is moving east across Illinois triggering a band of showers and strong thunderstorms that extends from the Chicago area southwest to St.Louis. Individual storm cells are moving north-northeast at 60 to 70 mph.
With a Wind Advisory in effect calling for gusts to 50 mph and the convective storms capable of individually strong gusts, damaging winds could be associated with this line of storms. The greatest potential for severe storms will most likely be east of Interstate-55 early this afternoon, but severe storms could occur at any time.
Latest Regional Weather Radar Mosaic…