Louisville, KY – A migrating heat dome is set to drive temperatures into the upper 80s and low 90s across the Ohio Valley within days, while repeated rounds of storms raise concerns for flooding and travel disruptions through early April.
According to the National Weather Service Climate Prediction Center, a 70 to 80 percent probability of above-normal temperatures will dominate Kentucky, southern Ohio, and southern Indiana from April 3 through April 9, paired with a growing signal for above-normal precipitation. Highs in Louisville, Cincinnati, and Columbus are expected to run 10 to 20 degrees above seasonal averages, with several areas nearing or exceeding 90 degrees. Overnight lows will remain mild, limiting relief.
The Ohio Valley sits along the northern edge of the heat dome, where warm, moisture-rich air will interact with incoming systems to fuel repeated rounds of showers and thunderstorms.
Rain chances increase across the region, especially during afternoon and evening hours. Heavier downpours could impact major corridors including I-64, I-65, I-70, and I-71, leading to reduced visibility and water-covered roads during peak travel times.
Residents are urged to stay hydrated, limit strenuous outdoor activity during peak heat, and avoid driving through flooded roadways.
This pattern is expected to persist through April 3–9, with additional advisories likely as rainfall totals and storm timing become more defined.
