Alert archive / Tennessee / Flash Flood Warnings in 2026

Flash Flood Warning 67, NWS Nashville, TN

August 11, 20264 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Aug 11, 2026, 10:52 PM CDT for 4 counties in Tennessee. 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 11, 2026, 10:52 PM CDT (03:52 UTC)
Expired
Aug 12, 2026, 1:45 AM CDT
In force
3 hr
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

Counties Davidson County, TN, Rutherford County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 27 km from the middle of the area, began a volume at 03:52 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

Nashville Metro, TN (KBNA), launched 00:00Z, 3.9 hours before the alert went out and 14 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2026-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3410 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2026-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3410 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1244 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

811 
WGUS54 KOHX 120352
FFWOHX
TNC037-149-187-189-120645-
/O.NEW.KOHX.FF.W.0067.260812T0352Z-260812T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
1052 PM CDT Tue Aug 11 2026

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Southeastern Davidson County in Middle Tennessee...
  Northern Rutherford County in Middle Tennessee...
  Northeastern Williamson County in Middle Tennessee...
  Southwestern Wilson County in Middle Tennessee...

* Until 145 AM CDT.

* At 1052 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 1.5 inches of rain
  have fallen. The expected rainfall rate is 2 inches in 1 hour.
  Additional rainfall amounts up to 1 inch are possible in the warned
  area. 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 will experience flash flooding include...
  Murfreesboro, Smyrna, La Vergne, Nolensville, Walterhill, Rural
  Hill, Antioch, Gladeville, Cedars Of Lebanon State Park, Lascassas
  and Percy Priest Lake.

This includes the following highways...
Interstate 840 between mile markers 52 and 73. Interstate 24 between
mile markers 54 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3601 8673 3613 8672 3615 8616 3583 8622
      3591 8674

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2 INCHES IN 1 HOUR

$$

Dirkes
1 follow-up statement
310 
WGUS74 KOHX 120432
FFSOHX

Flash Flood Statement
National Weather Service Nashville TN
1132 PM CDT Tue Aug 11 2026

TNC187-189-120442-
/O.CAN.KOHX.FF.W.0067.000000T0000Z-260812T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Williamson TN-Wilson TN-
1132 PM CDT Tue Aug 11 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN WILLIAMSON AND
SOUTHWESTERN WILSON COUNTIES...

Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.

&&

LAT...LON 3613 8672 3613 8654 3612 8653 3611 8654
      3605 8644 3603 8640 3604 8638 3603 8639
      3601 8638 3602 8637 3599 8633 3597 8625
      3594 8620 3584 8622 3599 8665 3605 8672

$$

TNC037-149-120645-
/O.CON.KOHX.FF.W.0067.000000T0000Z-260812T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Davidson TN-Rutherford TN-
1132 PM CDT Tue Aug 11 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT WEDNESDAY
FOR SOUTHEASTERN DAVIDSON AND NORTHERN RUTHERFORD COUNTIES...

At 1132 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 1.5 inches of rain have
fallen. The expected rainfall rate is 2 inches in 1 hour. Additional
rainfall amounts up to 1 inch are possible in the warned area. 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 will experience flash flooding include...
  Smyrna, La Vergne, Walterhill, Antioch, Percy Priest Lake and
  Lascassas.

This includes the following highways...
Interstate 840 between mile markers 56 and 65. Interstate 24 between
mile markers 54 and 67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3613 8672 3613 8654 3612 8653 3611 8654
      3605 8644 3603 8640 3604 8638 3603 8639
      3601 8638 3602 8637 3599 8633 3597 8625
      3594 8620 3584 8622 3599 8665 3605 8672

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2 INCHES IN 1 HOUR

$$

Cravens

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 Nashville, TN wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 7:31 PM CDT, 3 hours 21 minutes earlier. Its key messages:

  • Updated at 723 PM CDT Tue Aug 11 2026
  • Dangerous heat expected through the weekend with triple digit heat indices west of the Cumberland Plateau.
  • Low to medium thunderstorm chances primarily east of I-65 each afternoon and evening through Thursday. Stronger storms will be capable of damaging winds and heavy rain.
Area forecast discussion, Aug 11, 7:31 PM CDT, 3 hours 21 minutes before
Area Forecast Discussion
National Weather Service Nashville TN
731 PM CDT Tue Aug 11 2026

...New UPDATE...

.KEY MESSAGES...
Updated at 723 PM CDT Tue Aug 11 2026

- Dangerous heat expected through the weekend with triple digit
  heat indices west of the Cumberland Plateau.

- Low to medium thunderstorm chances primarily east of I-65 each
  afternoon and evening through Thursday. Stronger storms will be
  capable of damaging winds and heavy rain.

&&

.UPDATE...
Issued at 723 PM CDT Tue Aug 11 2026

Convection has been mostly limited to SE KY and NE TN this
evening. Storms continue to surge S, but are weakening (seen by
latest satellite trends). Activity is expected to continue to move
into E TN, where some storms could develop E of I-65 and across
the Plateau. Given current trends and latest ACARS soundings,
there is a low chance for any severe storms. Great risk for any
severe storms will be across our far NE counties (Pickett/Fentress
over the next few hours). Otherwise, activity should continue to
diminish through the late evening and into the overnight.
Wednesday brings another hot and humid day with medium chances for
scattered showers and storms through the day.

&&

.SHORT TERM...
(Rest of today through Wednesday)
Issued at 1034 AM CDT Tue Aug 11 2026

High pressure will be building over the southeast US through the
remainder of the week, allowing for temperatures to soar. Highs this
afternoon and again Wednesday will reach into the mid-90s for areas
west of the Cumberland Plateau. With dewpoints in the 70s, it'll
feel humid which means that heat index values will get into the low
triple digits both afternoons. This high pressure won't completely
suppress thunderstorms as it remains too far south through
Wednesday, leaving us in northwest flow. Northwest flow typically
means that the door is open for MCSs to track south/southeast into
Middle TN. Models do suggest this with CAMs showing the potential
for an MCS this afternoon and evening and another Wednesday
afternoon and evening. CAMs do struggle tremendously in this type of
pattern with runs this morning waffling on if we'll see any storms
today. If the do happen, plenty of instability, DCAPE, and
moisture will be available to them, giving any storms the
opportunity to produce damaging winds and heavy rain. Primary
threat will be for areas east of I-65. Marginal risks are in
place for both today and tomorrow to highlight this conditional
threat.

&&

.LONG TERM...
(Wednesday Night through next Tuesday)
Issued at 1034 AM CDT Tue Aug 11 2026

During the latter half of the week, high pressure will continue
to build north, and temperatures will only get hotter. High
temperatures will get into the upper-90s for many locations west
of the Plateau Thursday into Saturday, and then we may even be
talking about triple digit heat by Sunday. At Nashville, the NBM
gives an 80% chance of hitting 100 degrees Sunday. Even if we
don't hit triple digits, this heat wave will still be dangerous.
This prolonged stretch of hot temperatures will make for major to
extreme heat risk for all. So be sure to take care of yourself and
check on others who may be more sensitive to heat. Unfortunately,
overnight won't offer much relief with lows in the mid to
upper-70s with high humidity.

As far as rain goes, the more this high pressure builds overhead,
the more rain chances go down. There are low rain chances Thursday &
Friday, but the weekend looks to be dry which coincides with the
hottest temperatures. The heat should break early next week as
the high moves west and a boundary comes down from the north.

&&

.AVIATION...
(00Z TAFS)
Issued at 631 PM CDT Tue Aug 11 2026

A very active convective scheme is ongoing over eastern Kentucky,
soon-to-be eastern Tennessee. Given the lack of verification with
the short term models and the stout eastward motion, opted to
leave all but SRB and CSV dry in the near term through tonight.
Will monitor for amendments later tonight if needed, especially
with the outflow boundary racing toward the TN/KY state lines. For
tomorrow afternoon, CAMs show a series of shortwaves pushing
through the airspace at multiple increments. As such, included
more PROB30s just to account for the uncertainty in intensity and
convective coverage at that time. VFR conditions prevail with
light S/SW winds.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      75  95  76  96 /  40  30  30  10
Clarksville    75  94  76  95 /  30  20  30   0
Crossville     70  86  71  87 /  60  40  30  30
Columbia       74  95  75  96 /  30  20  10  10
Cookeville     71  88  72  90 /  60  50  20  20
Jamestown      70  87  71  88 /  60  40  30  20
Lawrenceburg   73  92  74  93 /  30  30  20  10
Murfreesboro   74  94  75  95 /  40  30  30  10
Waverly        74  94  75  95 /  30  10  20   0

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 9 PM CDT Friday for TNZ005>009-023>030-
056>063-075-077-093>095.

&&

UPDATE.......Cravens
SHORT TERM...Clements
LONG TERM....Clements
AVIATION.....Dirkes

In the hours before

Special weather statement, Aug 11, 9:04 PM CDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Nashville TN
904 PM CDT Tue Aug 11 2026

TNZ008>011-029>034-120300-
Putnam TN-Fentress TN-Overton TN-Pickett TN-Trousdale TN-Sumner TN-
Clay TN-Jackson TN-Macon TN-Smith TN-
904 PM CDT Tue Aug 11 2026

...STRONG THUNDERSTORMS WILL IMPACT OVERTON...PICKETT...NORTHERN
SMITH...JACKSON...SUMNER...CLAY...MACON...TROUSDALE...NORTHWESTERN
PUTNAM AND FENTRESS COUNTIES THROUGH 1000 PM CDT...

At 903 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from 8 miles west of Albany to
12 miles north of Red Boiling Springs to near Memphis Junction.
Movement was south at 30 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Gallatin, Lafayette, Livingston, Carthage, Jamestown, Celina,
Gainesboro, Byrdstown, Hartsville, Hendersonville, White House,
Algood, Westmoreland, Cross Plains, Red Boiling Springs, Portland,
South Carthage, Allardt, Mitchellville, and Moss.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3630 8480 3628 8488 3618 8491 3623 8585
      3630 8614 3635 8623 3632 8625 3635 8627
      3633 8630 3636 8636 3634 8639 3636 8667
      3653 8664 3663 8656 3665 8651 3660 8479
      3640 8466 3639 8467
TIME...MOT...LOC 0203Z 352DEG 28KT 3667 8527 3670 8593 3690 8649

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

Dirkes

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 9:04 PM CDTSpecial Weather StatementOHXClay, Fentress, Jackson, Macon, Overton, Pickett and 3 more56 min
Aug 11, 11:24 PM CDTSpecial Weather StatementOHXCannon, Coffee, Grundy, Rutherford, Warren51 min
Aug 11, 11:40 PM CDTFlash Flood WarningOHXCannon, Coffee, Rutherford, Warren2 hr
Aug 12, 6:29 PM CDTSpecial Weather StatementOHXLawrence46 min
Aug 12, 6:40 PM CDTFlash Flood WarningOHXLawrence65 min

Nearby

Flash Flood Warnings in Tennessee, 2026Every 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.