An upper-air disturbance triggered a long line of strong thunderstorms from the Upper Midwest to central Ohio Thursday night into Friday morning. The activity will sag south of the region and this morning, though clouds and standing water will linger.
The overnight storms brought impressive lightning and bands of very heavy rain, resulting in flash flood warnings and flood advisories. Locallly, 2 to 4 inches of rain fell in band from northwest to south-central Ohio overnight, causing ponding on some highways in the Columbus area.
Flood warnings have been extended until 4:45 p.m. on Friday for southwestern Union, Logan, Auglaize, and northern portions of Shelby and Champagin counties, northwest of Columbus, where up to 4 inches of rain resulted in numerous road closures.
The atmosphere will become primed again later Friday, with daytime heating and plenty of moisture, though storms that develop later in the afternoon will be widely scattered. A few cells could contain damaging wind gusts and hail.
A frontal boundary stretched out over northern Ohio will lift north early on Saturday, with only a chance for an isolated storm for central Ohio, until a cold front gets closer to the area Sunday evening from the west.
Sunshine will push temperatures into the mid-80s this weekend, with moderate humidity, making it feel like early summer.