- Today is a First Alert Day due to the severe weather threat across southern Wisconsin
- Isolated tornadoes, damaging winds and large hail are all possible from mid-afternoon into early evening
- Cooler and quieter weather returns Friday with scattered showers possible Saturday
MADISON, Wis. (WMTV) – Thursday is a First Alert Day across southern Wisconsin as multiple rounds of severe storms are expected from early afternoon into the early evening. This is a significant severe weather setup with all hazards on the table.
A strong weather system will track from Kansas this morning into northeast Iowa by early afternoon, then into east central Wisconsin by this evening. Ahead of this system, warm and humid air will surge north across the region.
The first round of storms may develop late morning into early afternoon. These storms could produce large hail as they move through the area.
The main severe weather threat arrives during the afternoon and early evening hours. As the system moves closer, conditions will become more favorable for dangerous storms across southern Wisconsin. Isolated tornadoes, damaging winds and large hail are all possible during this timeframe. Some of these storms could produce significant damage.
The atmosphere will be primed for severe weather with strong winds at multiple levels supporting rotating storms. Computer models show the potential for both individual supercell thunderstorms and organized line segments moving through the region.
Heavy rainfall will accompany these storms with moisture levels running high. Flash flooding is possible, especially in urban areas where water cannot soak into the ground quickly.
Heading into the weekend…
Behind the storms Thursday evening, winds will shift from the west and cooler air will move in. Temperatures will drop into the 50s by Friday morning.
Friday will bring a return to dry weather with light winds from the west and temperatures near normal for mid-June. The active weather pattern takes a break as high pressure briefly moves in.
Saturday will see another chance for showers and thunderstorms as a weak system approaches from the west during the afternoon and moves through Saturday night. Scattered showers and storms are possible throughout the day.
Looking ahead…
Early next week will feature below-normal temperatures and periodic chances for showers as a larger weather system becomes established over Ontario. Shower chances will remain in the forecast through Wednesday with cooler conditions continuing.
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