MADISON, Wis. — South-central Wisconsin is facing a heightened risk of heavy rain and localized flooding from Monday afternoon through Tuesday, with additional rounds of unsettled weather expected later in the week. A First Alert Day has been declared for Monday and Tuesday because storms could produce heavy rainfall over a short period. The greatest flooding concerns are in low-lying areas, locations with poor drainage and near small streams, where water levels can rise quickly. Monday began with partly sunny skies and temperatures rising into the lower 70s. Clouds are expected to increase as moisture moves into the region. Scattered showers and thunderstorms are forecast to expand across southern Wisconsin later Monday afternoon and continue into the overnight hours. The storms are not expected to be severe, but intense rainfall rates could create hazardous conditions for drivers and residents in flood-prone areas. Motorists should use caution during heavy downpours and avoid entering water-covered roads. The active weather pattern is expected to continue through the week. Saturday could bring a brief period of partly sunny skies, light west winds and afternoon temperatures in the 70s before moisture returns. Clouds are expected to increase Sunday, with highs in the middle to upper 70s and a chance of light rain late in the day. The likelihood of steadier rain and thunderstorms is expected to rise heading into the first part of next week. Conditions should gradually begin to clear as the system moves east, but residents are advised to check updated forecasts during the next 24 to 48 hours.