DAYTON, Ohio (WDTN) –
4:50 PM UPDATE: Scattered shower continue in the Miami Valley this evening. A few thunderstorms are possible especially along a cold front.
Convection is currently taking place along a boundary from Columbus to Louisville. A few thunderstorms may develop across Clark, Montgomery, Greene, Warren, Butler, and Clinton Counties this evening. The storms will move northeast. The cold front isn’t in a big hurry to move, so their may be some minor flooding in spots.
Scattered showers will continue overnight and some lightning is possible.
We will eventually see the skies clear a bit heading into Wednesday afternoon. Temperatures will be chilly with lows in the 40s tonight and highs near 60 tomorrow.
12:20 PM UPDATE: The peak wind gust reached 41 mph in Springboro as a line of thunderstorms moved through the Miami Valley. The line is currently weakening across Miami and Champaign County. Mercer, Auglaize, Shelby, Logan, and northern Darke County will not see much rain out of this system.
A cold front is also making its way into the Miami Valley. The front is moving SE across the region through the afternoon. A few thunderstorms will develop along this front. These storms will be isolated and mostly impact areas in Clark, Montgomery, Butler, Greene, Warren, and Clinton County. After these storms move east we will no longer be under a risk of severe weather. Scattered showers will continue overnight and into Wednesday morning.
The wind may gust around 30-40 mph with the afternoon thunderstorms. Behind the cold front we will see wind gusts out of the NW around 20-25 mph throughout the night. The wind will begin to weaken late Wednesday afternoon.
10:25 AM UPDATE: Thunderstorms are moving north, northeast across the Miami Valley between now and noon. Expect a period of 20-30 minutes with heavy rainfall and thunder. The storms did produce a 29 mph wind gust as they moved through Cincinnati. Wind should remain below the severe limit of 58 mph. The storms will be the strongest south of I-70 and are expected to weaken as they move north across the region. Light to moderate rainfall will follow behind the thunder and heavy rain.
The second round of thunderstorms is expected to form this afternoon between 2 and 6 pm. These storms will be scattered in a line moving east across Clark, Montgomery, Butler, Greene, Warren, and Clinton County. After these storms move east we will no longer be under a risk of severe weather. A few light showers will continue overnight.
9:45 AM UPDATE: The National Weather Service said heavy downpours are possible as showers and thunderstorms continue to move across the region.
Showers and thunderstorms will continue to move east northeast across the region through the morning. Could be some locally heavy downpours. Once this moves past, additional showers and storms may develop in the mid to late afternoon as a cold front moves in from the west. pic.twitter.com/qwBIB7wVP0— NWS Wilmington OH (@NWSILN) May 4, 2021
Early Morning Forecast Update: Storm Team 2 Meteorologist Jamie Jarosik said isolated showers will impact mainly areas south of Dayton through mid-morning. Most of the Miami Valley will remain rather dry for the next few hours.
A cluster of storms will move into the Tri-State region late in the morning around 10 am. Scattered storms will impact areas south of I-70 through 2 pm Tuesday afternoon. A few of these may be strong with some gusty wind and small hail. The severe risk is very low.
A cold front will approach the Miami Valley Tuesday afternoon. As the front approaches, another round of thunderstorms may develop after 2 pm. These storms will be isolated and mostly impact areas in Clark, Montgomery, Butler, Greene, Warren, and Clinton County. After these storms move east we will no longer be under a risk of severe weather. A few light showers will continue overnight.