The National Weather Service has issued a Severe Thunderstorm Watch for Butler County and much of southwest Ohio as a line of potentially damaging storms moves toward the region overnight. Forecasters say a mature squall line tracking east from Illinois and Indiana is expected to reach the area around midnight. While the storms are expected to weaken somewhat as they move into Ohio, the National Weather Service says strong to severe wind gusts remain possible, especially across western and central Ohio. The watch remains in effect until 3 a.m. Friday.
The primary threats include:
- Damaging wind gusts up to 70 miles per hour
- Isolated severe thunderstorms
- The possibility of a brief tornado embedded within the line of storms
The National Weather Service office in Wilmington reported Thursday evening that it was closely monitoring the approaching storms and warned that strong to severe winds could continue into the local area despite gradual weakening. In addition to Butler County, the watch includes Warren, Preble, and Montgomery counties in Ohio, and Franklin County, Indiana.
A Hazardous Weather Outlook issued by the National Weather Service says thunderstorms are expected to overspread the region around midnight, with gusty to damaging winds posing the greatest threat. Residents are urged to stay weather aware overnight, keep a way to receive warnings while sleeping, and be prepared to move to a sturdy shelter if severe weather warnings are issued.
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 319
NWS Storm Prediction Center Norman OK
945 PM EDT Thu Jun 11 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Illinois
Central and Southern Indiana
Western into Central Ohio
* Effective this Thursday night and Friday morning from 945 PM
until 300 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...A mature squall line will likely progress east into the
Watch area through this evening into tonight. Strong to severe
gusts ranging from 55 to 70 mph will be capable of wind damage
within the more intense surges of the line. A brief tornado or two
with an embedded mesovortex is also possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means
conditions are favorable for severe thunderstorms
in and close to the watch area. Persons in these
areas should be on the lookout for threatening
weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can
and occasionally do produce tornadoes.
WATCH COUNTY NOTIFICATION FOR WATCH 319
NATIONAL WEATHER SERVICE WILMINGTON OH
950 PM EDT THU JUN 11 2026
INC041-047-161-177-OHC011-017-021-023-037-057-065-091-097-107-109-
113-135-149-159-165-120700-
/O.NEW.KILN.SV.A.0319.260612T0150Z-260612T0700Z/
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
319 IN EFFECT UNTIL 3 AM EDT FRIDAY FOR THE FOLLOWING AREAS
IN INDIANA THIS WATCH INCLUDES 4 COUNTIES
IN EAST CENTRAL INDIANA
FAYETTE UNION WAYNE
IN SOUTHEAST INDIANA
FRANKLIN
IN OHIO THIS WATCH INCLUDES 16 COUNTIES
IN CENTRAL OHIO
MADISON UNION
IN SOUTHWEST OHIO
BUTLER WARREN
IN WEST CENTRAL OHIO
AUGLAIZE CHAMPAIGN CLARK
DARKE GREENE HARDIN
LOGAN MERCER MIAMI
MONTGOMERY PREBLE SHELBY
THIS INCLUDES THE CITIES OF ADA, BEAVERCREEK, BELLEFONTAINE,
BROOKVILLE, CAMDEN, CELINA, COLDWATER, CONNERSVILLE,
DOWNTOWN DAYTON, EATON, FAIRBORN, FAIRFIELD, FRANKLIN,
GREENVILLE, HAMILTON, KENTON, KETTERING, LANDEN, LEBANON,
LIBERTY, LONDON, MARYSVILLE, MASON, MIDDLETOWN, MINSTER,
NEW BREMEN, OXFORD, PIQUA, PLAIN CITY, RICHMOND, SIDNEY,
SPRINGBORO, SPRINGFIELD, ST. MARYS, TIPP CITY, TROY, URBANA,
WAPAKONETA, WEST COLLEGE CORNER, WEST JEFFERSON, AND XENIA.
