5:55 AM UPDATE: A severe Flood Warning is under effect for Clinton, Greene and Warren counties until 6:30 a.m. Saturday. A Flash Flood Watch has been issued for Butler, Champaign, Clark, Clinton, Darke, Greene, Miami, Montgomery, Preble and Warren counties through Saturday morning. A possible tornado touched down in Mercer County causing damage.
[5:43 AM] Here is a map of storm reports we have received so far. We are also planning to conduct a damage survey today in Mercer County, Ohio. https://t.co/08vPnydsUm
— NWS Wilmington OH (@NWSILN) June 19, 2021
9:18 PM UPDATE: A Flash Flood Warning issued for Clinton, Greene and Warren County until 12:30 a.m. Saturday.
8:47 PM UDPATE: A Tornado Warning has been issued for Butler, Montgomery and Warren County until 9:15 p.m.
Storm Team 2 Chief Meteorologist Brian Davis is tracking a debris signature in the northeastern part of Butler County, near Middletown, which is indicative of a tornado. The NWS believes the debris field has weakened but still recommends
8:38 PM UPDATE: A Tornado Warning has been issued by the National Weather Service for Greene, Montgomery and Warren County until 9 p.m.
The NWS is warning of damaging winds increasing for areas near Wilmington and Eaton. They said that the storms will cause damage and urge residents to seek shelter immediately.
7:58 UPDATE: A Severe Thunderstorm Warning has been issued for Clinton, Greene and Warren County until 8:45 p.m.
7:19 PM UPDATE: A Severe Thunderstorm Warning has been issued for Darke County until 7:45 p.m.; a separate Severe Thunderstorm Warning has been issued for Greene and Montgomery until 8 p.m.
6:43 PM UPDATE: The National Weather Service has expired the Tornado Warning in Darke, Miami, Montgomery and Preble County. A new Severe Thunderstorm Warning has been issued for Greene, Miami and Montgomery County.
6:15 PM UPDATE: The Tornado Warning in Darke, Miami, Montgomery and Preble County has been extended to 6:45 p.m. Reports of ping-pong to golf ball sized hail are coming in throughout Montgomery County as well.
6:02 PM UPDATE: A Tornado Warning has been issued for Darke, Miami, Montgomery and Preble counties until 6:30 p.m.
5:59 PM UPDATE: Golf ball size hail reported in Trotwood. A severe thunderstorm warning was issued by the National Weather Service until 6:30 p.m.
5:51 UPDATE: A cell is beginning to develop NW of Dayton. These storms are growing very quickly and a tornado is possible at any moment this evening thanks to a warm and moist environment.
5:38 UPDATE: A Tornado Warning has been extended for Darke County until 6 p.m. The warnings issued for Miami and Shelby County are still set to expire at 5:45 p.m.
5:20 PM UPDATE: The National Weather Service has issued a Severe Thunderstorm Warning for Darke County until 6 p.m. The Tornado Watch has been canceled for Darke County but continues in both Miami and Shelby County.
5:12 PM UPDATE: A Tornado Warning has been issued for Darke, Shelby and Miami County until 5:45 p.m.
5:06 PM UPDATE: The cluster of thunderstorms near the Ohio/Indiana Border is moving southeast across northern Darke County, Shelby County and northern Miami County. These storms are producing hail around an inch in Diameter and wind gusts around 60 mph. A tornado is possible at any time.
4:53 PM UPDATE: Severe thunderstorm warning was issued by the National Weather Service for NE Darke County, SW Shelby County, and NW Miami County until 5:15. The entire area is under a tornado watch and a tornado can occur with little or no advance warning tonight.
4:45 PM UPDATE: The Tornado Warning in Mercer and Darke County has expired and the tornado is believed to have lifted.
2 NEWS confirmed with a 911 administrator in Mercer County that damage can be seen on Fort Recovery-Minster Road and Burrville Road.
4:25 PM UPDATE: The NWS is monitoring a strong rotation moving towards Burkettsville and New Weston.
Storm Team 2 Chief Meteorologist Brian Davis urges people in southern Mercer County and northern Darke County to seek shelter.
4:20 PM UPDATE: A tornado has been confirmed in the Fort Recovery area.
4:15 PM UPDATE: A Tornado Warning has been extended for Mercer and Darke County until 4:45 p.m. and a Tornado Watch has been issued for the rest of Miami Valley until 11 p.m.
The NWS is reporting that a tornado is being tracked on radar moving into Mercer County and urges residents to seek shelter.
4 PM UPDATE: The NWS has issued a Severe Thunderstorm Warning for Mercer County until 4:30 p.m.
Wind speeds could potentially reach up to 60 mph and the forecast is now calling for quarter sized hail.
12 PM UPDATE: The first round of rain Friday has moved through the Miami Valley but the severe weather is not over.
Storm Team 2 Meteorologist Melissa Barrington said hail was reported in Eaton ranging from a quarter inch to half an inch in size. The sun is expected to come out this afternoon, pushing temperatures near 90 degrees. Melissa said to expect windy, hot conditions with more hail, thunderstorms and isolated tornadoes possible.
A flooding risk exists overnight with some areas getting as much as 2-4 inches of rain. This could result in high water in low-lying areas, poorly drained streets, creeks and streams. Flood Watches have been issued from 6 pm Friday until Saturday morning for Butler, Champaign, Clinton, Darke, Greene, Miami, Montgomery, Preble and Warren Counties, as well as Wayne County in Indiana.

Here is a look outside WDTN as clouds moved in Friday.
This is a look at the 24-hour risk:

Father’s Day looks nice with partly sunny skies and a slim chance of a shower. Turning cooler by the middle of next week.
This is a look at the 48-hour risk:

Stay up to date with the weather by downloading the 2 NEWS and Storm Team 2 Apps. WDTN.com and Storm Team 2 will be following the weather as long as it lasts to keep you informed.