TORNADOES AND FLASH FLOODING

Storm Snowfall Map 1

Severe Weather Discussion

A significant severe weather event is expected across the Ohio Valley today as a strong disturbance drops southeastward from the Upper Midwest. This type of setup, often associated with northwesterly flow aloft, can support fast-moving thunderstorms capable of producing damaging wind gusts, large hail, and tornadoes.

The greatest concern will be across portions of Illinois, Indiana, Ohio, and nearby areas, where thunderstorms may rapidly intensify during the afternoon and evening. Strong wind shear in the atmosphere could allow some storms to rotate, increasing the risk for tornadoes in addition to widespread damaging winds.

Farther south, tropical moisture associated with a disturbance moving inland near the Gulf Coast may enhance thunderstorm development across Louisiana and Mississippi tomorrow. A few of these storms could become strong enough to produce isolated tornadoes, especially where localized bands of heavier thunderstorms develop.

The severe weather threat will then shift eastward into the Mid-Atlantic and portions of the Northeast tomorrow. Thunderstorms moving through those regions may bring damaging wind gusts, torrential rainfall, frequent lightning, and isolated severe weather as the system progresses toward the Atlantic Coast.

Overall, the next 24 to 48 hours will feature multiple areas of active weather, with the highest severe weather threat centered on the Ohio Valley today before expanding into the Gulf Coast states, Mid-Atlantic, and Northeast tomorrow.