There is a marginal risk for severe storms in the Miami Valley Sunday evening. Scattered storms will continue into the night. Storms will weaken after 9 p.m. A few isolated showers will be possible overnight.
The greatest threat will be damaging winds and hail at least 1 inch in diameter. A trough is tracking through the area increasing storm energy in the area. There is less energy across the northern half of the Miami Valley where there was widespread rain this morning.
4:56 p.m. update: Severe Thunderstorm Warning for southern Greene County, Warren, and Clinton County. 60 mph winds and quarter-sized hail has been indicated on radar. This storm could cause minor damage to trees, power lines, and cars. This warning includes Ceasar Creek State Park. The warning will expire at 5:30 p.m.
4:28 p.m. update: Hail with a diameter of 3/4 an inch was reported in West Liberty. The storms are strong in southern Logan County and Champaign County moving east at 20 mph. Penny sized hail and 40 mph wind gust are possible. The storms are not severe at this time, but Live Doppler 2 HD indicates hail could quarter-sized. These storms are tracking
3:25 p.m. update: A strong storm with 1/2 inch diameter hail and 40 mph wind gusts in Butler County is moving northeast into Preble and Montgomery County.
Isolated storms have developed in Champaign, Clark, and Shelby County.
Storm development across the area will continue the next few hours.