It now appears that showers and even a thunderstorm or two are a good bet for Thursday as a disturbance in the jet stream dips over the region. This will provide lift for a moist and somewhat unstable atmosphere and will generate widespread showers, some of which may be heavy.

Ammended forecast for Thursday:

Mostly cloudy with showers and even a few scattered thunderstorms, particularly in the afternoon. Probability of precipitation 80%. Rainfall totals around 0.50 inches although there could be up to 1.00 inch in some locations in some heavier showers and thunderstorms.