Scattered thunderstorms will continue across the Chicago area this Monday afternoon into the early evening hours. Heavy flood-producing downpours of an inch or more in a short period of time and hail up to nickel-size may occur in the strongest storms. Follow the development/movement of these storms on the Radar Mosaic below and the Interactive Radar at the top of the WGNTV.com site.
A nearly stationary “closed-off” upper air low pressure circulation is centered over northeast Illinois and the instability associated with the low pressure along with peak-heating of the afternoon has allowed these thunderstorms to develop. Note on the radar mosaic below, storms are slowly moving in conjunction with the counter-clockwise flow associated with the low pressure center.
Shower and thunderstorms will slowly diminish this evening.
Current Radar Mosaic…