Jennifer Edwards Baker reports:
Hot and humid conditions today will give way to possibly severe and damaging thunderstorms tonight as a cold front moves into Greater Cincinnati and Northern Kentucky.
The main threats will be high winds gusting more than 60 mph, quarter-size hail and brief, heavy downpours that could lead to flash-flooding, according to the National Weather Service in Wilmington.
An isolated tornado also is possible, said meteorologist Steve Rhebenach.
The severe weather comes as a so-called derecho pattern developed in the Midwest on Tuesday. It could spawn damaging with gusts as strong as 100 mph, tornadoes and hail the size of large golf balls in places like Cincinnati, Milwaukee, Chicago, Cleveland and Detroit.
“It’s possible there could be a derecho,” Rhebenach said. “It’s not clear if the winds would be quite that strong when it comes through our area, but we could have strong and damaging winds.”
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A derecho is an intense and long-lived series of straight-line winds often associated with fast-moving thunderstorms or rain.
Derecho windstorms occur once every year or two across the central and northeastern U.S. in a band from Texas to New England. They pack hazardous winds of at least 75 mph or more and maintain their intensity for hours as they sweep across vast distances.
Today will be partly sunny with a high temperature of 91 degrees, well above the normal high of 81 for this time of year.
The storms could hit as soon as 4 p.m. or 5 p.m., but it’s more likely they will not develop until 10 p.m., Rhebenach said. The storms will last on and off throughout the overnight hours. The greatest chance for damaging weather could be early Thursday as the cold front moves in from the northwest.
The overnight low will only fall to 70 degrees.
Thursday will still hold the potential for scattered showers and thunderstorms through noon, but the threat for damaging weather will be over.
It will feel considerably cooler and more seasonal with a high temperature only reaching 78.
Thursday night will be mostly clear with a low around 57.
The weather should clear by the weekend. Friday and Saturday will be sunny with highs in the mid-to-upper 70s.