
Severe Storms Thrash Great Plains to Mid-Atlantic
Multiple severe thunderstorm systems are expected to form today, running from the northern Plains to the Mid-Atlantic.
# HEADLINE -------------------- FLOOD ADVISORY IN EFFECT UNTIL 515 AM EDT EARLY THIS MORNING # DETAILS -------------------- WHAT Flooding caused by excessive rainfall is expected. WHERE Ripley County in southeastern Indiana... WHEN Until 515 AM EDT. IMPACTS Minor flooding in low-lying and poor drainage areas. ADDITIONAL DETAILS - At 221 AM EDT, radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 1.5 inches are possible. - SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE Versailles, Osgood, Holton, Napoleon, Versailles Lake, Otter Village, New Marion, Benham, Olean, Ballstown and Cross Plains. ISSUED AT Wednesday, August 12, 2026 at 2:21 AM EDT ISSUED BY National Weather Service Wilmington OH HEADER Flood Advisory # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. To report flooding, go to our website at weather.gov/iln and submit your report via social media, when you can do so safely. # AREAS AFFECTED -------------------- Ripley IN
# HEADLINE -------------------- FLOOD WATCH NOW IN EFFECT THROUGH WEDNESDAY EVENING # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall continues to be possible. WHERE Portions of Indiana, including the following counties, Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland, Union and Wayne, Kentucky, including the following counties, Boone, Bracken, Campbell, Carroll, Gallatin, Grant, Kenton, Lewis, Mason, Owen, Pendleton and Robertson, and Ohio, including the following counties, Adams, Auglaize, Brown, Butler, Champaign, Clark, Clermont, Clinton, Darke, Delaware, Fairfield, Fayette, Franklin, Greene, Hamilton, Hardin, Highland, Hocking, Licking, Logan, Madison, Mercer, Miami, Montgomery, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Union and Warren. WHEN Through Wednesday evening. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. ADDITIONAL DETAILS - Additional thunderstorms are expected through Wednesday. Locally heavy rainfall and the potential for storms to repeatedly track over the same areas are possible. This will result in the potential for flash flooding. ISSUED AT Tuesday, August 11, 2026 at 11:33 PM EDT ISSUED BY National Weather Service Wilmington OH HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- People in the watch area should keep an eye on the weather and be prepared for immediate action should heavy rains and flooding occur or a Flash Flood Warning be issued. Avoid low-lying areas and be careful when approaching highway dips and underpasses. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Carroll, Montgomery, Robertson, Ross, Union, Adams, Auglaize, Boone, Bracken, Brown, Butler, Campbell, Champaign, Clark, Clermont, Clinton, Darke, Dearborn, Delaware, Fairfield, Fayette, Fayette, Franklin, Franklin, Gallatin, Grant, Greene, Hamilton, Hardin, Highland, Hocking, Kenton, Lewis, Licking, Logan, Madison, Mason, Mercer, Miami, Ohio, Owen, Pendleton, Pickaway, Pike, Preble, Ripley, Scioto, Shelby, Switzerland, Union, Warren, Wayne Including the cities of Downtown Columbus, Butler, Fairborn, Downtown Cincinnati, West College Corner, Camden, Newark, Greenfield, Aurora, Milan, Falmouth, Maysville, Lebanon, Withamsville, West Union, Hillsboro, Rising Sun, Tipp City, Waverly, Connersville, Camp Dix, Piketon, Delaware, Marysville, Versailles, Mount Carmel, Wilmington, Coldwater, Blanchester, Springboro, Peebles, Oakbrook, Warsaw, Independence, Alexandria, Liberty, Oxford, Greenville, Richmond, Newport, Landen, Plain City, Ripley, Brooksville, Franklin, Augusta, Wapakoneta, West Jefferson, Mount Orab, Head Of Grassy, Pike Lake, Lancaster, Pickerington, Logan, Eaton, Owenton, Summerside, Springfield, London, Circleville, Brookville, Greendale, St. Marys, Bellefontaine, Sidney, Bellevue, Seaman, Dillsboro, Osgood, Downtown Dayton, Crittenden, Covington, Wheelersburg, Kenton, Celina, Burlington, Washington Court House, Hidden Valley, Hamilton, Mount Repose, Kettering, Williamstown, Erlanger, Troy, Winchester, Manchester, Middletown, Georgetown, Florence, Urbana, Ada, Milford, Mason, Tollesboro, Mulberry, Beavercreek, Fort Thomas, Fairfield, Aberdeen, Portsmouth, Minster, Dayton, Carrollton, Chillicothe, Lawrenceburg, Batesville, New Bremen, Piqua, Dry Ridge, Mount Olivet, Xenia, Day Heights, Bright, Highland Heights, Vevay, and Vanceburg
Closest strike: 0.92 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.
There is a Slight Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE DAKOTAS AND NORTHERN NEBRASKA...AND FROM NORTHERN ILLINOIS TO WESTERN NORTH CAROLINA SUMMARY Severe storms posing a risk for large hail and damaging winds are possible into tonight from the Dakotas into the Midwest. IL to western NC A bowing line of storms from central KY into northeast TN/western VA will continue to develop southeast the next few hours. A damaging wind risk will continue with this activity in the short term. However, convection should begin to wane with southeast extent into the Appalachians as instability wanes and loss of daytime heating results in a cooling boundary layer. Convection across KY and perhaps portions of eastern TN may remain stronger into the evening given the large reservoir of instability ahead of storms, but overall expected is for a gradual weakening trend. Reference MCD 1939 for more short term details. Overnight, most CAMs guidance suggests convection will redevelop within a warm advection regime across parts of northern IL into IN and the Ohio Valley. The 00z DVN and ILX RAOBs depict an impressive thermodynamic and kinematic environment. Midlevel lapse rates near 8 C/km amid 40 kt effective shear and MUCAPE near 5000 J/kg with weak inhibition suggests any storms developing within this environment could be severe. Convection may develop along the instability gradient and large hail is possible. If sufficient clustering occurs, damaging wind also could be possible. As a result, the Slight (level 2 of 5) risk as been expanded back to the northwest across northern IL. Dakotas into IA Supercells across the western Dakotas and far northern NE will continue to pose a risk for very large hail and damaging gusts the next few hours. See MCD 1938 for short term information on severe risk. It is uncertain how convection will evolve longer-term during the overnight hours. Some guidance suggests clustering will occur and an MCS could develop, moving east/southeast across SD/northern NE and perhaps as far east as IA. Ample west/northwesterly flow aloft is in place, along with a very moist airmass with strong to extreme instability. If sufficient clustering can occur, MCS development/maintenance seems plausible. have expanded the Slight (level 2 of 5) risk eastward across SD/NE into western IA border vicinity for this possibility.












