Tornado Warning 45, NWS Wilmington, OH

033 
WWUS51 KILN 111341
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
941 AM EDT Tue Aug 11 2026

OHC021-023-097-111400-
/O.CON.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Champaign OH-Clark OH-Madison OH-
941 AM EDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR
SOUTHEASTERN CHAMPAIGN...NORTHEASTERN CLARK AND CENTRAL MADISON
COUNTIES...

At 941 AM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Choctaw Lake, moving southeast at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
London, Jefferson, West Jefferson, Mechanicsburg, Choctaw Lake, Lake
Darby, Brighton, Lafayette, South Vienna, Catawba, Newport,
Interstate 70 at US Route 42, Lilly Chapel, State Route 29 at State
Route 38, Interstate 70 at State Route 56, Madison Lake, and
Plumwood.

This includes I-70 in Ohio between mile markers 67 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3978 8352 4001 8366 4009 8352
TIME...MOT...LOC 1341Z 315DEG 46KT 3997 8354 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

KC

960 
WWUS51 KILN 111344
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
944 AM EDT Tue Aug 11 2026

OHC021-111354-
/O.CAN.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Champaign OH-
944 AM EDT Tue Aug 11 2026

...THE TORNADO WARNING FOR SOUTHEASTERN CHAMPAIGN COUNTY IS
CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 PM EDT for
central and west central Ohio.

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3979 8350 3999 8359 4001 8355 4001 8352
      4003 8352 4006 8346
TIME...MOT...LOC 1344Z 315DEG 46KT 3994 8350 

$$

OHC023-097-111400-
/O.CON.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Clark OH-Madison OH-
944 AM EDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR EAST
CENTRAL CLARK AND CENTRAL MADISON COUNTIES...

At 944 AM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Choctaw Lake, moving southeast at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
London, Jefferson, West Jefferson, Choctaw Lake, Lake Darby,
Brighton, Lafayette, Newport, Interstate 70 at US Route 42, Lilly
Chapel, State Route 29 at State Route 38, Interstate 70 at State
Route 56, Madison Lake, and Plumwood.

This includes I-70 in Ohio between mile markers 69 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3979 8350 3999 8359 4001 8355 4001 8352
      4003 8352 4006 8346
TIME...MOT...LOC 1344Z 315DEG 46KT 3994 8350 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

KC

328 
WWUS51 KILN 111349
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
949 AM EDT Tue Aug 11 2026

OHC023-111359-
/O.CAN.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Clark OH-
949 AM EDT Tue Aug 11 2026

...THE TORNADO WARNING FOR EAST CENTRAL CLARK COUNTY IS CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 PM EDT for
central and west central Ohio.

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3981 8344 3995 8353 4003 8339
TIME...MOT...LOC 1349Z 312DEG 46KT 3992 8341 

$$

OHC097-111400-
/O.CON.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Madison OH-
949 AM EDT Tue Aug 11 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR CENTRAL
MADISON COUNTY...

At 949 AM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
London, moving southeast at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
London, Jefferson, West Jefferson, Choctaw Lake, Lake Darby,
Lafayette, Interstate 70 at US Route 42, Interstate 70 at State Route
56, Madison Lake, Lilly Chapel, State Route 29 at State Route 38, and
Plumwood.

This includes I-70 in Ohio between mile markers 72 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3981 8344 3995 8353 4003 8339
TIME...MOT...LOC 1349Z 312DEG 46KT 3992 8341 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

KC

827 
WWUS51 KILN 111355
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
955 AM EDT Tue Aug 11 2026

OHC097-111404-
/O.EXP.KILN.TO.W.0045.000000T0000Z-260811T1400Z/
Madison OH-
955 AM EDT Tue Aug 11 2026

...THE TORNADO WARNING FOR CENTRAL MADISON COUNTY WILL EXPIRE AT 1000
AM EDT...

The storm which prompted the warning has weakened below severe limits
and no longer appears capable of producing a tornado. Therefore, the
warning will be allowed to expire.  However, gusty winds and heavy
rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 200 PM EDT for
central and west central Ohio.

Please report previous tornadoes, wind damage or hail to the National
Weather Service by going to our website at weather.gov/iln and
submitting your report via social media.

Remember, a Severe Thunderstorm Warning still remains in effect for
Madison County.

&&

LAT...LON 3996 8324 3992 8324 3992 8325 3988 8325
      3981 8344 3995 8353 4003 8339
TIME...MOT...LOC 1354Z 315DEG 46KT 3989 8337 

$$

KC

Area Forecast Discussion
National Weather Service Wilmington OH
649 AM EDT Tue Aug 11 2026

.WHAT HAS CHANGED...
Due to the higher potential for impacts, the damaging wind and flash
flood threat have been separated into sections.

&&

.KEY MESSAGES...
1) Increased threat for a significant damaging wind event across the
area this afternoon and evening.

2) Increased threat for flash flooding across the area today through
Wednesday morning.

3) Additional chances for thunderstorms and heavy rain are possible
through the end of the week with drier weather attempting to return
late Friday and into the weekend.

&&

.DISCUSSION...
Morning update...
Latest satellite data shows an expansive area of cooling cloud tops
across northern Indiana as robust thunderstorms develop. This is the
second feature noted below. The evolution of this feature ahead of
the main line will play an important role in the higher-end scenario
for today. If this complex survives into the local area, this would
nudge the higher wind threat farther south. Wherever the northern
boundary of the highest instability resides, that will be the
northern extent of the more significant wind threat. More
specifically, this would decrease the potential for the significant
winds later today for locations like west-central Ohio into central
and south- central Ohio. Depending on how far south it advances, the
threat could be limited to southeast Indiana, southwest Ohio, and
portions of northern Kentucky. Check for updates throughout the day!

Previous discussion (3:29 AM)...
KEY MESSAGE 1) Now that the late evening and early overnight
thunderstorm complex has shifted southeast of the region, the
northern half of the area is currently in a stable cold pool air
mass, while the southern half is still considerable unstable.
Thunderstorms are beginning to form along a stalled boundary
currently placed across northern Indiana. If these thunderstorms
attempt to move southeast, they will encounter the cold pool air mass
previously mentioned. These storms would struggle to organize as a
result. Trends will be monitored over the next few hours, but this is
first feature which could play an important role in today's
significant wind threat potential.

The second feature is across southern Wisconsin and northern
Illinois. Near the northern tip of the low-level jet, thunderstorms
are beginning to develop. To the east and south of these storms,
undisturbed energy remains. While this is ahead of the better forcing
associated with the shortwave, the available energy to the south
would give it a much better chance to evolve into a more organized
storm complex into the morning hours.

If these two features remain on the weaker side, confidence would
become very high that the local area would see a widespread,
significant damaging wind event later this afternoon and evening. The
second feature has the better chance of organizing, therefore it
would likely have the biggest role to play in altering local impacts
from the higher-end scenario. There is also the potential where this
feature and the main event combine as they approach the local area.

As SPC notes in their discussion, all environmental parameters are
in place for a widespread, potentially significant damaging wind
event across the area. The timing is also optimal for the local area,
moving through during the peak of the diurnal instability (afternoon
into evening). Damaging wind gusts of 75+ mph are likely if a well-
organized MCS can develop and then move through the area. The major
limiting factor would be any earlier development ahead of this main
event. Despite the focus being on the more widespread damaging wind
event, embedded tornadoes within the squall-line would also be
possible, especially on the northern segment of the MCS. Large hail
could also occur in the deepest thunderstorms.

KEY MESSAGE 2)
Morning update...Flash flood watch expanded for the entire area.

Previous discussion (3:29 AM)...
The best chance for flash flooding across the northern portion of
the area would be if multiple rounds of thunderstorms occur later
this morning and through the afternoon. Then, if an organized MCS
moves through, multiple inches would have accumulated over this
region.

Of more increasing concern, after the MCS moves through, moisture
will continue to move into the region from the southwest. Back
building of thunderstorms along the stretched outflow will focus a
flash flood threat over a portion of the area. This activity could
continue well into Wednesday as the front stalls over southern
portions of the area. SPC HREF LPMM does support this potential over
south-central and southern Ohio, but there is a growing signal for
southeast Indiana, southwest Ohio and northern Kentucky (some of
these counties are outside the flood watch). Because this threat may
not evolve until later tonight and into Wednesday, the flood watch
has not been extended to include these areas quite yet. However, it
may be needed later today as confidence increases. If a back-building
scenario can develop, localized amounts of 5-7" are plausible as seen
from earlier events in Perry County OH this evening.

KEY MESSAGE 3)
Thursday and through the weekend, long-range guidance continues to
suggest an active pattern will continue over the Ohio Valley, but
some breaks are possible. This is largely due to a ridge of high
pressure over the middle and lower Mississippi River Valley feeding
moisture northward. The trough over southeast Canada is supplying a
steady amount of northwesterly upper level flow, increasing wind
shear over the region. There are signs this may breakdown as the
ridge builds northward over the upper Midwest into the weekend. This
would bring a surge of lower PWATs southward reducing rainfall
chances Friday into Saturday. Chances for thunderstorms increase to
round out the weekend.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
A new round of thunderstorms is beginning to form across northern
Indiana. This will likely progress southeastward into area TAF sites
between 13Z and 16Z. This could be the first of several rounds of
thunderstorms today. If conditions allow, there is the potential
for a line of significant winds gusts (75+ mph) this afternoon and
evening. Because there this threat for earlier rounds of
thunderstorms, PROB30 groups begin late this morning and into the
early afternoon. Because of the higher confidence late this afternoon
and evening, TEMPO groups have been added. Expect timing adjustments
throughout the day.

Otherwise winds are out of the southwest around 10 knots before
thunderstorm activity potentially influences them. Winds become more
westerly after 00Z as a front slides through the area.

OUTLOOK...Thunderstorms are possible at times through Friday.

&&

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

&&

DISCUSSION...McGinnis
AVIATION...McGinnis

Hazardous Weather Outlook
National Weather Service Wilmington OH
514 AM EDT Tue Aug 11 2026

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-120915-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Delaware-Miami-Champaign-Clark-Madison-Licking-Preble-Montgomery-
Greene-Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-
Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto-
514 AM EDT Tue Aug 11 2026

...FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING...

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

.DAY ONE...Today 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.

Several rounds of thunderstorms are expected today. Damaging winds,
potentially significant, may result in widespread damage and power
outages. Isolated tornadoes cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

Preliminary Local Storm Report
National Weather Service Wilmington OH
533 AM EDT Tue Aug 11 2026

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

0520 AM     Flash Flood      2 SSE Downtown Columbus 39.93N 82.98W
08/11/2026                   Franklin           OH   911 Call Center

            Multiple vehicles stranded in one to two
            feet of water on Parsons Avenue south of
            Stewart Avenue.

&&

nm

Preliminary Local Storm Report
National Weather Service Wilmington OH
706 AM EDT Tue Aug 11 2026

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

0645 AM     Flash Flood      6 WNW Murray City       39.54N 82.28W
08/11/2026                   Hocking            OH   911 Call Center

            High water over State Route 595 near
            Gore-Greendale Road.

&&

nm

Special Weather Statement
National Weather Service Wilmington OH
834 AM EDT Tue Aug 11 2026

OHZ026-035-044-045-111300-
Logan OH-Auglaize OH-Hardin OH-Union OH-
834 AM EDT Tue Aug 11 2026

...A RAPIDLY DEVELOPING THUNDERSTORM WILL IMPACT PORTIONS OF LOGAN
COUNTY IN WEST CENTRAL OHIO...NORTHWESTERN UNION COUNTY IN CENTRAL
OHIO...HARDIN AND EAST CENTRAL AUGLAIZE COUNTIES IN WEST CENTRAL OHIO
THROUGH 900 AM EDT...

At 834 AM EDT, a rapidly developing thunderstorm was located near
Chippewa Park, moving east at 45 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Hail may cause minor damage to
         vegetation.

Locations impacted include...
Bellefontaine, Kenton, Richwood, Russells Point, Lakeview, Alger,
Belle Center, West Mansfield, Chippewa Park, Northwood, Blanchard,
Roundhead, Mount Victory, Rushsylvania, Mcguffey, Huntsville,
Ridgeway, Zanesfield, Raymond, and New Jerusalem.

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 4070 8350 4070 8344 4069 8344 4069 8342
      4051 8342 4050 8327 4028 8327 4037 8400
      4073 8385 4077 8350
TIME...MOT...LOC 1234Z 277DEG 37KT 4054 8382

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

JDR

Preliminary Local Storm Report
National Weather Service Wilmington OH
917 AM EDT Tue Aug 11 2026

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

0906 AM     Tstm Wnd Gst     2 NW Vandalia           39.91N 84.22W
08/11/2026  M46 MPH          Montgomery         OH   ASOS

            ASOS station KDAY Dayton International
            Airport.

&&

Preliminary Local Storm Report
National Weather Service Wilmington OH
922 AM EDT Tue Aug 11 2026

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

0950 PM     Tstm Wnd Dmg     1 W Rockford            40.69N 84.66W
08/10/2026                   Mercer             OH   911 Call Center

            Trees and poles down along Rockford West
            Road just west of Rockford. Time estimated
            from Radar.

&&

JDR

Special Weather Statement
National Weather Service Wilmington OH
928 AM EDT Tue Aug 11 2026

INZ050-058-059-066-OHZ060>062-070>072-111415-
Fayette IN-Wayne IN-Union IN-Franklin IN-Montgomery OH-Warren OH-
Clinton OH-Butler OH-Preble OH-Greene OH-
928 AM EDT Tue Aug 11 2026

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF FRANKLIN COUNTY IN
SOUTHEASTERN INDIANA...SOUTHERN WAYNE...UNION AND FAYETTE COUNTIES IN
EAST CENTRAL INDIANA...SOUTHERN PREBLE COUNTY IN WEST CENTRAL OHIO...
BUTLER...WARREN AND NORTHWESTERN CLINTON COUNTIES IN SOUTHWESTERN
OHIO...GREENE AND SOUTHERN MONTGOMERY COUNTIES IN WEST CENTRAL OHIO
THROUGH 1015 AM EDT...

At 928 AM EDT, strong thunderstorms were located along a line
extending from near Beavercreek to 8 miles north of Rushville, moving
southeast at 40 mph.

HAZARD...Wind gusts up to 40 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...
Dayton, Hamilton, Kettering, Middletown, Beavercreek, Fairfield,
Richmond, Fairborn, Mason, Xenia, Trotwood, Oxford, Miamisburg,
Lebanon, Springboro, Sharonville, Connersville, Wilmington, Monroe,
and Loveland.

This includes the following Interstates...
 I-70 in Indiana between mile markers 134 and 136.
 I-71 in Ohio between mile markers 20 and 61.
 I-74 in Indiana between mile markers 145 and 148.
 I-75 in Ohio between mile markers 18 and 55.

If outdoors, consider seeking shelter inside a sturdy building.

Motorists should slow down and use extra caution.

A Severe Thunderstorm Watch remains in effect until 200 PM EDT for
southeastern and east central Indiana...and southwestern and west
central Ohio.

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 3979 8530 3979 8522 3987 8522 3975 8477
      3977 8424 3982 8383 3980 8382 3978 8365
      3948 8368 3934 8396 3927 8424 3929 8427
      3931 8461 3931 8522 3928 8530
TIME...MOT...LOC 1328Z 316DEG 34KT 3975 8402 3973 8540

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

KC