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Heat Advisory — Hardin, OH, Mercer, OH, Auglaize, OH, Darke, OH, Shelby, OH, Logan, OH, Miami, OH, Champaign, OH, Clark, OH, Preble, OH, Montgomery, OH, Greene, OH, Butler, OH, Warren, OH, Clinton, OH, Hamilton, OH, Clermont, OH, Brown, OH, Highland, OH, Adams, OH, Union, OH, Delaware, OH, Madison, OH, Franklin, OH, Licking, OH, Fayette, OH, Pickaway, OH, Fairfield, OH, Ross, OH, Hocking, OH, Pike, OH, Scioto, OH
Issued
Expires
7:00 PM CDT · Thu, Jul 2 2026
Issuing Office
NWS KILN

Affected Areas

Hardin, OH Mercer, OH Auglaize, OH Darke, OH Shelby, OH Logan, OH Miami, OH Champaign, OH Clark, OH Preble, OH Montgomery, OH Greene, OH Butler, OH Warren, OH Clinton, OH Hamilton, OH Clermont, OH Brown, OH Highland, OH Adams, OH Union, OH Delaware, OH Madison, OH Franklin, OH Licking, OH Fayette, OH Pickaway, OH Fairfield, OH Ross, OH Hocking, OH Pike, OH Scioto, OH

Official Bulletin

612
WWUS71 KILN 300443
NPWILN

URGENT - WEATHER MESSAGE
National Weather Service Wilmington OH
1243 AM EDT Tue Jun 30 2026

INZ050-058-059-066-073>075-080-KYZ089>099-OHZ026-034-035-042>044-051>053-060>062-070>072-077>081-301900-
/O.UPG.KILN.HT.Y.0003.000000T0000Z-260703T0000Z/
/O.NEW.KILN.XH.W.0001.260630T0443Z-260703T0000Z/
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-
Bracken-Robertson-Mason-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Miami-Champaign-Clark-Preble-Montgomery-Greene-Butler-Warren-
Clinton-Hamilton-Clermont-Brown-Highland-Adams-
Including the cities of Florence, Beavercreek, Celina, Vevay,
Connersville, Kenton, Carrollton, West College Corner,
Versailles, Newport, Lawrenceburg, Bright, Summerside, Minster,
Oakbrook, Franklin, Tipp City, Owenton, Downtown Dayton,
Withamsville, Augusta, Aberdeen, Springboro, Fairborn,
Georgetown, Dayton, Xenia, Crittenden, Bellevue, Greendale,
Eaton, Sidney, Osgood, Alexandria, Fairfield, Day Heights,
Brooksville, Springfield, Erlanger, Rising Sun, Fort Thomas,
Mount Olivet, Mount Orab, Hillsboro, Liberty, New Bremen, Seaman,
Wilmington, Coldwater, Highland Heights, Dillsboro, Mount Repose,
Mulberry, Warsaw, Camden, Wapakoneta, Aurora, Falmouth,
Middletown, Independence, West Union, Brookville, Milford, Mason,
Hidden Valley, Landen, Milan, Oxford, Greenville, Winchester,
Richmond, Burlington, Covington, Ada, Greenfield, Urbana,
Bellefontaine, Downtown Cincinnati, Ripley, St. Marys,
Batesville, Troy, Lebanon, Williamstown, Kettering, Maysville,
Butler, Manchester, Piqua, Blanchester, Dry Ridge, Mount Carmel,
Peebles, and Hamilton
1243 AM EDT Tue Jun 30 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM EDT THURSDAY...

* WHAT...Dangerously hot conditions with heat index values around
  105 expected.

* WHERE...Portions of east central and southeast Indiana, northern
  Kentucky, and south central, southwest, and west central Ohio.

* WHEN...Until 8 PM EDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events, particularly for those
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in air-conditioned rooms, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

KYZ100-OHZ045-046-054>056-063>065-073-074-082-088-301900-
/O.UPG.KILN.HT.Y.0003.260630T1600Z-260703T0000Z/
/O.NEW.KILN.XH.W.0001.260630T1600Z-260703T0000Z/
Lewis-Union-Delaware-Madison-Franklin-Licking-Fayette-Pickaway-
Fairfield-Ross-Hocking-Pike-Scioto-
Including the cities of Logan, Camp Dix, Chillicothe, Delaware,
Vanceburg, Plain City, Piketon, Waverly, Marysville, Tollesboro,
Circleville, Pickerington, Portsmouth, Lancaster, Newark,
Wheelersburg, Head Of Grassy, Downtown Columbus, West Jefferson,
Pike Lake, London, and Washington Court House
1243 AM EDT Tue Jun 30 2026

...EXTREME HEAT WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT
THURSDAY...

* WHAT...Dangerously hot conditions with heat index values around
  105 expected.

* WHERE...Portions of northeast Kentucky and central and south
  central Ohio.

* WHEN...From noon today to 8 PM EDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events, particularly for those
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in air-conditioned rooms, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

Clark