SHORT TERM... 242 PM CDT Through Tonight... The main items of note for the short term forecast are scattered showers and a few storms continuing into early evening along with the potential for overnight and early morning fog. The broad surface low and a fairly broad parent mid-level trough are slowly drifting east across the mid-Mississippi Valley this afternoon. Forcing for ascent within a high absolute moisture and non-capped airmass are generating convection, but limited focus and moisture transport/replenishment are keeping showers scattered. Envision this trend continuing through early to mid- evening, especially as a mid-level vorticity maximum in northwest Illinois per water vapor imagery shifts east over the area. This feature may continue showers and even a storm or two into the overnight. Locally heavy downpours with the slow-moving cells will continue to be common, but the convection has not been deep enough to warrant any concerns on flooding. Also, a chance for a funnel cloud or two in north central Illinois and points west through early evening, given high values of low-level CAPE and vorticity. The combination of the showers, residual high dew point air around 70, and the passage of the broad surface low over the area overnight set the stage for stratus and/or fog. Confidence is fairly low on which it will be, especially for north central Illinois. This is the area that has a slightly better potential to clear toward sunset and the area that is being hit hardest by high-resolution guidance for potential dense fog. Have areas of fog mentioned into the morning for this region. Feel that the eastern half of the CWA including Chicago, which has had less shower coverage and currently under more close-celled clouds, is likely to stratify more so than fog in.