Update: With the end of another round of severe weather, some areas are now seeing flooding.
A flood watch is in effect for the entire Tri-State until midnight.
FOX19 has a crew on the way to Butler County, where flooding seems to be heaviest.
Update: Another strong cell is making its way through southeast Indiana and northern Kentucky.
Carroll, Gallatin, Owen, Grant and Pendleton counties in northern Kentucky and Switzerland County in Indiana were in line for this storm. Many of those counties saw Severe Thunderstorm Warnings Wedndesday afternoon, although no major damage has been reported.
The storm is capable of producing nickel-sized hail and winds up to 60 miles per hour.
Update: The National Weather Service has extended the Tornado Watch for the entire Tri-State until 4 p.m.
A tornado watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings.
Also, Observatory Lane in Hyde Park is shut down due to trees in the roadway and wires down.
At 9:30 a.m., Duke is reporting about 9,500 customers out of service.
Update: The National Weather Service says that a tornado has touched down in Newtown, Ohio. City officials say there are reports of downed trees, but they have seen no signs of funnel clouds or tornados.
The hardest hit areas appear to be Hyde Park, Northside, Fairfield and Newtown. At Woody Sander Ford of Mitchell Ave., there is report of heavy damage, including pieces of the roof being blown off.
Update: On Tuesday, the city of Lebanon had to go to a backup communications system for police and fire dispatchers because one of the antennas for the primary system apparently was hit by lightning, officials said.
Flooding was reported in several communities around Dayton. Parts of Butler and Warren counties received 2-3 inches of rain, the National Weather Service said.
In Hamilton, a woman was injured Tuesday night when a nearby tree was struck by lightning, according to a supervisor at The Fort Hamilton Hospital. She was treated and expected to be released.
Fire departments in nearby Somerville and Seven Mile responded to reports of electrical lines on fire.
Those attending Tuesday's Hamilton High School commencement in Oxford stayed inside for about 45 minutes after the event as police worked to move people to a basement during high winds and hail that accompanied a tornado warning.
Click on the video links on the right to see video of damage from across the Tri-State.
Stay with FOX19 and FOX19.com for more updates and send your weather pictures and video to email@example.com.
Update: Duke Energy is reporting 9,000 customers without power in Ohio and Kentucky. The greatest majority of those are in Hamilton and Boone Counties. At a peak of the storms 19,000 customers were without power.
Update: Several counties in the Tri-State were under severe thunderstorm or tornado warnings Tuesday afternoon.
A line of strong storms moved through southeast Indiana, northern Kentucky and southwest Ohio beginning around 3 p.m.
There are some reports of damage from wind and lightning and large hail.
In Ripley County, Indiana, there are reports of some buildings being damage. Also in Indiana, near Friendship, there are reports of trees down. At McHugh Place and Montgomery in Ohio, there are reports of trees and power lines down. In Kentucky, there were reports of lots of rain, high winds and lightning in Florence.
At 4:30 p.m., Duke was reporting almost 17,000 customers without power. The majority were in Hamilton, Kenton and Boone Counties.