DAYTON, OHIO — A severe weather threat is taking shape across the Miami Valley and surrounding regions of western and central Ohio, with forecasters flagging a Level 1 Marginal Risk for severe thunderstorms on June 25, 2026. While this is not a high-end severe weather event, the setup carries real hazards that residents should not ignore heading into the afternoon hours.
The primary window for any significant storm activity runs from 2PM through 8PM, driven by a frontal boundary sagging southward through the region. This boundary is expected to provide enough atmospheric lift to fire isolated stronger storms if afternoon instability develops as forecasters anticipate.
What Threatens You This Afternoon
The most significant hazard across the warned area is damaging wind gusts ranging from 40 to 60 MPH, strong enough to bring down trees and snap power lines. Lightning threat is rated at a medium level, while large hail probability remains very low for most communities.
The detail drawing the most attention from forecasters is a specific, isolated tornado risk near Columbus, where a brief spin-up tornado cannot be ruled out as the frontal boundary pushes through. This adds an additional layer of concern for central Ohio communities even within a lower-tier risk setup.
Communities in the Threat Zone
The Marginal Risk zone sweeps across a wide portion of western and central Ohio, covering Dayton, Springfield, Xenia, Troy, Sidney, Greenville, Urbana, Bellefontaine, Wapakoneta, Celina, Eaton, Oxford, Springboro, Wilmington, and Liberty, among others.
How to Stay Safe
Residents across all of these communities should stay weather-aware from early afternoon onward. If a severe thunderstorm warning is issued for your county, move indoors immediately and stay away from windows. Do not wait to see the storm approaching before taking action.
Outdoor plans between 2PM and 8PM should include a clearly identified shelter option. Stay updated through local emergency alerts throughout the evening until the threat fully clears.
