Alert archive / Kentucky / Flash Flood Warnings in 2026

Flash Flood Warning 69, NWS Wilmington, OH

August 13, 2026Grant County, Owen County, Pendleton County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Aug 13, 2026, 7:18 PM EDT for Grant County, Owen County, Pendleton County, Kentucky. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 13, 2026, 7:18 PM EDT (23:18 UTC)
Expired: Aug 13, 2026, 10:15 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Grant County, KY, Owen County, KY, Pendleton County, KY

The radar

The Cincinnati radar (KILN), 115 km from the middle of the area, began a volume at 23:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.3 hours before the alert went out and 117 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

259 
WGUS51 KILN 132318
FFWILN
KYC081-187-191-140215-
/O.NEW.KILN.FF.W.0069.260813T2318Z-260814T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wilmington OH
718 PM EDT Thu Aug 13 2026

The National Weather Service in Wilmington has issued a

* Flash Flood Warning for...
  Southeastern Grant County in northern Kentucky...
  East Central Owen County in northern Kentucky...
  Southwestern Pendleton County in northern Kentucky...

* Until 1015 PM EDT.

* At 718 PM EDT, radar indicated thunderstorms producing heavy rain
  across the warned area. Between 1.5 and 2.5 inches of rain have
  fallen. Additional rainfall amounts of 0.5 to 1 inch are possible.
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that may experience flash flooding include...
  Williamstown, Corinth, Cherry Grove, Keefer, Lawrenceville, Camp
  Northward, Cordova, Stewartsville and Marcus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

To report flash flooding, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3857 8470 3861 8470 3866 8460 3861 8449
      3856 8445 3854 8447 3854 8448 3853 8449
      3849 8457 3852 8469

FLASH FLOOD...RADAR INDICATED

$$

Campbell

2 follow-up statements

399 
WGUS71 KILN 140105
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
905 PM EDT Thu Aug 13 2026

KYC081-187-191-140215-
/O.CON.KILN.FF.W.0069.000000T0000Z-260814T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant KY-Owen KY-Pendleton KY-
905 PM EDT Thu Aug 13 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT THIS
EVENING FOR SOUTHEASTERN GRANT, EAST CENTRAL OWEN AND SOUTHWESTERN
PENDLETON COUNTIES...

At 905 PM EDT, radar indicated thunderstorms producing heavy rain
across the warned area. Between 1.5 and 3 inches of rain have fallen.
Flooding impacts will continue, but no additional rainfall is
expected. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that may experience flash flooding include...
  Williamstown, Corinth, Cherry Grove, Keefer, Lawrenceville, Camp
  Northward, Cordova, Stewartsville and Marcus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

To report flash flooding, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3857 8470 3861 8470 3866 8460 3861 8449
      3856 8445 3854 8447 3854 8448 3853 8449
      3849 8457 3852 8469

FLASH FLOOD...RADAR INDICATED

$$

Clark

586 
WGUS71 KILN 140208
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
1008 PM EDT Thu Aug 13 2026

KYC081-187-191-140218-
/O.EXP.KILN.FF.W.0069.000000T0000Z-260814T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant KY-Owen KY-Pendleton KY-
1008 PM EDT Thu Aug 13 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 1015 PM EDT THIS EVENING FOR
SOUTHEASTERN GRANT, EAST CENTRAL OWEN AND SOUTHWESTERN PENDLETON
COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures. Keep in mind
that additional storms are possible later tonight into Friday.

A Flood Watch remains in effect until 1100 AM EDT Friday for portions
of Indiana, Kentucky, and Ohio.

&&

LAT...LON 3857 8470 3861 8470 3866 8460 3861 8449
      3856 8445 3854 8447 3854 8448 3853 8449
      3849 8457 3852 8469

$$

Clark

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Aug 13, 3:11 PM EDT, 4 hours 7 minutes earlier. Its key messages:

1) Additional rounds of showers and storms are expected from this afternoon into Friday. Locally heavy rainfall and flooding will continue to be a concern. 2) Warmer temperatures will develop over the weekend with lesser coverage of showers and storms until a cold front moves through the region Sunday night.

Area forecast discussion, Aug 13, 3:11 PM EDT, 4 hours 7 minutes before

Area Forecast Discussion
National Weather Service Wilmington OH
311 PM EDT Thu Aug 13 2026

.WHAT HAS CHANGED...
Adjusted pops a little quicker and QPF higher.

&&

.KEY MESSAGES...
1) Additional rounds of showers and storms are expected from this
afternoon into Friday. Locally heavy rainfall and flooding will
continue to be a concern.

2) Warmer temperatures will develop over the weekend with lesser
coverage of showers and storms until a cold front moves through the
region Sunday night.

&&

.DISCUSSION...

KEY MESSAGE 1)

Active weather pattern to continue overnight into Friday.  Another
MCS moving thru east-southeast thru northern Illinois. This system
will likely dive more southeast closer to the instability gradient
into portions of eastern Indiana and western Ohio this evening. CAM
solutions show a favorable overlap of shear/instability with some of
the storms on the leading edge of this cluster having potential to
become severe. Damaging wind gusts will be the primary severe hazard,
although a brief tornado and marginally severe hail are also
possible. CAM solutions differ on the exact placement and timing
with the 00Z HRRR having the placement of the current storms.
Following this solution - the most favorable location and time for
severe weather is across eastern Indiana, southwest Ohio, and
northern KY - this evening into the early overnight hours.

Additional storm development is expected where favorable 8H moisture
convergence will setup. Storms oriented from northwest to southeast
to track into ILN/s FA thru the overnight hours and slowly sag south
thru the area Friday morning. Environment is primed for heavy rain
with PWAT values expected to be near 2 inches. The potential for
stripes of 2 to 4 inch rainfall and locally 5 plus in repeated storms
overnight. This heavy rain will potentially affect areas already
hard hit by flooding.

In the wake of this activity, there is not much of a signal for additional
storms the rest of Friday. The flood watch continues tonight into
Friday morning.

KEY MESSAGE 2)

Mid level ridge will build a bit northward over the weekend. This
will push the active pattern of storms north of the area. It will
also allow for temperatures to warm substantially. There will be the
potential for heat indices reaching advisory criteria on Saturday and
Sunday. Convection will be much more limited until a cold front
slides southeast across the region on Sunday night.

&&

.AVIATION /13Z THURSDAY THROUGH MONDAY/...

A storm complex will likely dive more southeast closer to the
instability gradient into portions of eastern Indiana and western
Ohio this evening. The potential exists for a few of the storms to
become strong to severe this evening into the overnight hours.
Damaging wind gusts will be the primary severe hazard, although a
brief tornado and marginally severe hail are also possible.

Additional storm development is expected behind these storms and will
sag slowly south thru the area into Friday morning.

Have prob30 mention for initial more scattered storms and then
widespread showers and tempo groups for the storms overnight. VFR
conditions will drop to MVFR to brief IFR in storms. Expect
conditions to become widespread MVFR to IFR area wide overnight.
Conditions will slowly improve to MVFR by late morning

OUTLOOK...MVFR/IFR visibilities possible Friday night in fog.
Thunderstorms are possible on Sunday night.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...Flood Watch through Friday morning for OHZ026-034-035-042>046-
     051>056-060>065-070>074-077>082-088.
KY...Flood Watch through Friday morning for KYZ089>100.
IN...Flood Watch through Friday morning for INZ050-058-059-066-073>075-
     080.

&&

DISCUSSION...AR
AVIATION...AR

Hazardous weather outlook, Aug 13, 3:22 PM EDT, 3 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
322 PM EDT Thu Aug 13 2026

KYZ099-100-OHZ026-034-035-042>046-051>056-062>065-072>074-079>082-
088-141930-
Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union-Delaware-
Miami-Champaign-Clark-Madison-Franklin-Licking-Greene-Fayette-
Pickaway-Fairfield-Clinton-Ross-Hocking-Brown-Highland-Adams-Pike-
Scioto-
322 PM EDT Thu Aug 13 2026

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for northeast Kentucky, northern
Kentucky, central Ohio, south central Ohio, southwest Ohio and west
central Ohio.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

In addition, the heat index will be around 100 Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

INZ050-058-059-066-073>075-080-KYZ089>098-OHZ060-061-070-071-077-078-
141930-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Preble-Montgomery-Butler-Warren-Hamilton-Clermont-
322 PM EDT Thu Aug 13 2026

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for east central Indiana,
southeast Indiana, northern Kentucky, southwest Ohio and west
central Ohio.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

Strong to severe thunderstorms will be possible late this afternoon
and this evening. Damaging wind is the primary threat. Isolated
tornadoes and large hail are also possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

The heat index may approach 100 on Saturday and be at or above
100 on Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Local storm report, Aug 13, 3:26 PM EDT, 3 hours 52 minutes before

Preliminary Local Storm Report
National Weather Service Wilmington OH
326 PM EDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1008 AM     Tstm Wnd Dmg     3 E Upper Arlington     40.02N 82.99W
08/11/2026                   Franklin           OH   Dept of Highways

            Video shows car blown over by wind gusts on
            I-71 and Weber camera. Possible tornado.

&&

Local storm report, Aug 13, 3:28 PM EDT, 3 hours 50 minutes before

Preliminary Local Storm Report
National Weather Service Wilmington OH
328 PM EDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1008 AM     Tstm Wnd Dmg     3 E Upper Arlington     40.02N 82.99W
08/11/2026                   Franklin           OH   Public

            Windows blown out of home on Homecroft
            Drive. Possible tornado.

&&

Local storm report, Aug 13, 3:33 PM EDT, 3 hours 45 minutes before

Preliminary Local Storm Report
National Weather Service Wilmington OH
333 PM EDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1008 AM     Tstm Wnd Dmg     3 E Upper Arlington     40.02N 83.00W
08/11/2026                   Franklin           OH   Dept of Highways

            Corrects previous tstm wnd dmg report from 3
            E Upper Arlington. Video from ODOT shows car
            being flipped over by winds on I-71 near
            Weber Road.

&&

Local storm report, Aug 13, 3:34 PM EDT, 3 hours 44 minutes before

Preliminary Local Storm Report
National Weather Service Wilmington OH
334 PM EDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1008 AM     Tstm Wnd Dmg     3 E Upper Arlington     40.02N 82.99W
08/11/2026                   Franklin           OH   Public

            Corrects previous tstm wnd dmg report from 3
            E Upper Arlington. Windows blown out of home
            on Homecroft Drive.

&&

Special weather statement, Aug 13, 6:04 PM EDT, 1 hour 14 minutes before

Special Weather Statement
National Weather Service Wilmington OH
604 PM EDT Thu Aug 13 2026

INZ073-075-080-KYZ089-090-094-095-132245-
Switzerland IN-Ripley IN-Ohio IN-Carroll KY-Owen KY-Gallatin KY-
Grant KY-
604 PM EDT Thu Aug 13 2026

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF OHIO...SOUTHWESTERN
RIPLEY...SWITZERLAND...CARROLL...SOUTHWESTERN GRANT...OWEN AND
GALLATIN COUNTIES THROUGH 645 PM EDT...

At 604 PM EDT, a strong thunderstorm was located near Bedford, moving
east at 40 mph.

HAZARD...Wind gusts up to 45 mph and very heavy rain.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Visibility will be poor and hydroplaning
         is possible.

Locations impacted include...
Carrollton, Vevay, Warsaw, Owenton, Florence, Kentucky Speedway,
Pleasant, Glencoe, Fairview, Ghent, Sanders, Sparta, Worthville,
Prestonville, Monterey, Gratz, Elk Lake, Aberdeen, Rexville, and
Wheatley.

This includes I-71 in Kentucky between mile markers 39 and 63.

If outdoors, consider seeking shelter inside a sturdy building.

Motorists should slow down and use extra caution.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 3900 8544 3894 8512 3893 8492 3845 8461
      3836 8487 3846 8491 3843 8494 3852 8498
      3851 8503 3856 8501 3856 8506 3860 8509
      3858 8521 3874 8533 3874 8526 3869 8520
      3891 8520 3891 8544
TIME...MOT...LOC 2204Z 268DEG 37KT 3856 8524

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...45 MPH

Campbell

Special weather statement, Aug 13, 7:07 PM EDT, 11 minutes before

Special Weather Statement
National Weather Service Wilmington OH
707 PM EDT Thu Aug 13 2026

INZ080-KYZ089>096-132345-
Switzerland IN-Boone KY-Pendleton KY-Carroll KY-Owen KY-Kenton KY-
Campbell KY-Gallatin KY-Grant KY-
707 PM EDT Thu Aug 13 2026

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SWITZERLAND...
EASTERN CARROLL...SOUTHERN KENTON...SOUTHERN CAMPBELL...SOUTHERN
BOONE...GRANT...OWEN...PENDLETON AND GALLATIN COUNTIES THROUGH 745 PM
EDT...

At 706 PM EDT, a strong thunderstorm was located near Florence,
moving southeast at 30 mph.

HAZARD...Wind gusts up to 45 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Williamstown, Walton, Falmouth, Crittenden, Dry Ridge, Vevay, Warsaw,
Owenton, Butler, Florence, Kentucky Speedway, Morgan, Glencoe,
Fairview, Ghent, Sanders, Corinth, Sparta, Patriot, and
Stewartsville.

This includes the following Interstates...
 I-71 in Kentucky between mile markers 50 and 76.
 I-75 in Kentucky between mile markers 144 and 172.

If outdoors, consider seeking shelter inside a sturdy building.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 3850 8493 3889 8518 3890 8491 3884 8426
      3858 8423 3856 8439 3856 8442 3854 8442
      3853 8444 3853 8446 3854 8447 3851 8449
      3851 8452 3849 8456 3843 8463 3842 8470
TIME...MOT...LOC 2306Z 306DEG 24KT 3884 8500

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...45 MPH

Clark

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 13, 6:04 PM EDT	Special Weather Statement	ILN	Carroll, Gallatin, Owen	41 min
Aug 13, 6:54 PM EDT	Areal Flood Advisory	ILN	Carroll, Gallatin, Owen	3 hr
Aug 13, 7:07 PM EDT	Special Weather Statement	ILN	Gallatin, Grant, Owen, Pendleton	38 min
Aug 13, 7:11 PM EDT	Areal Flood Advisory	ILN	Grant, Owen, Pendleton	7 min
Aug 13, 7:21 PM EDT	Special Weather Statement	ILN	Bracken, Mason, Robertson	39 min

Nearby

Flash Flood Warnings in Kentucky, 2026 Every flash flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.