Severe thunderstorms will affect several parts of the country this period, with the greatest threat from the Black Hills region east/southeast into the central plains later today into tonight. Damaging wind, hail, and a few tornadoes may occur. Storms with locally damaging wind also may occur from the Ozarks into the lower Ohio and Tennessee Valleys. More isolated and briefly severe storms are expected over the central and southern High Plains and Southeast.
Severe storms will develop mid to late afternoon across the Black Hills region. This is storms will initially be isolated in nature, and will pose a the greatest potential. Storms will then eventually grow upscale and will bow out, just as we saw last night.
A moderate risk has been issued and does include extreme northwest Iowa. This was issued due to the damaging wind threat that is expected to develop as the line of storms approaches Iowa very late this evening, into the early morning hours Thursday. Storms will still continue to pose a damaging wind threat into central Iowa, which is why an enhanced risk has been issued there.
Storms will then exit the state around sunrise Thursday, and will set the stage for another severe weather day on Thursday. For more details on Thursday’s severe weather threat, check back to IowaChase.com later this afternoon.