Alert archive / Tennessee / Flash Flood Warnings in 2026

Flash Flood Warning 50, NWS Nashville, TN

August 1, 20264 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Aug 1, 2026, 8:43 AM CDT for 4 counties in Tennessee. It was in force for 77 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 1, 2026, 8:43 AM CDT (13:43 UTC)
Expired
Aug 1, 2026, 10:00 AM CDT
In force
77 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

Counties Smith County, TN, Sumner County, TN, Trousdale County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 38 km from the middle of the area, began a volume at 13:46 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.

What was reported inside it

TimeReportWhereRemark
Aug 1, 8:50 AM CDTFLASH FLOOD3 N Lebanon, TNWater standing on road near the 4000 block of Coles Ferry Pike.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 7 minutes after it went out.

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 12:00Z, 1.7 hours before the alert went out and 46 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 12:00Z on 2026-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 259 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2026-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 219 square meters per square second.193958Sfc1 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
259 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
219 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

541 
WGUS54 KOHX 011343
FFWOHX
TNC159-165-169-189-011645-
/O.NEW.KOHX.FF.W.0050.260801T1343Z-260801T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
843 AM CDT Sat Aug 1 2026

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Smith County in Middle Tennessee...
  Southeastern Sumner County in Middle Tennessee...
  Trousdale County in Middle Tennessee...
  Central Wilson County in Middle Tennessee...

* Until 1145 AM CDT.

* At 843 AM CDT, Doppler radar and automated rain gauges indicated
  thunderstorms producing heavy rain across the warned area. Between
  2 and 3 inches of rain have fallen. Additional rainfall amounts of
  0.5 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 and automated gauges.

  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...
  Lebanon, Carthage, Hartsville, Watertown, Gordonsville, Hickman,
  South Carthage, Tuckers Crossroads, Dickerson Chapel Recreation
  Area, Dixon Springs, Pleasant Shade and Bledsoe Creek State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3633 8639 3644 8640 3644 8612 3643 8600
      3642 8595 3642 8591 3613 8582 3607 8636

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Baggett
1 follow-up statement
376 
WGUS74 KOHX 011500
FFSOHX

Flash Flood Statement
National Weather Service Nashville TN
1000 AM CDT Sat Aug 1 2026

TNC159-165-169-189-011510-
/O.CAN.KOHX.FF.W.0050.000000T0000Z-260801T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Smith TN-Sumner TN-Trousdale TN-Wilson TN-
1000 AM CDT Sat Aug 1 2026

...FLASH FLOOD WARNING IS CANCELLED FOR SMITH, SOUTHEASTERN SUMNER,
TROUSDALE AND CENTRAL WILSON COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

&&

LAT...LON 3633 8639 3644 8640 3644 8612 3643 8600
      3642 8595 3642 8591 3613 8582 3607 8636

$$

Baggett

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 1, 6:45 AM CDT, 1 hour 58 minutes earlier. Its key messages:

  • Updated at 635 AM CDT Sat Aug 1 2026
  • There are medium to high chances for showers and storms on Saturday with a low risk for strong winds and also some risk for flash-flooding.
  • There's at least a medium chance for showers on Sunday and Monday, but cooler than average temperatures will also stick around into early next week.
  • Expect low rain and storm chances for the remainder of next week with temperatures warming back above seasonal norms closer to the weekend.
Area forecast discussion, Aug 1, 6:45 AM CDT, 1 hour 58 minutes before
Area Forecast Discussion
National Weather Service Nashville TN
645 AM CDT Sat Aug 1 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 635 AM CDT Sat Aug 1 2026

- There are medium to high chances for showers and storms on
  Saturday with a low risk for strong winds and also some risk
  for flash-flooding.

- There's at least a medium chance for showers on Sunday and
  Monday, but cooler than average temperatures will also stick
  around into early next week.

- Expect low rain and storm chances for the remainder of next week
  with temperatures warming back above seasonal norms closer to
  the weekend.

&&

.SHORT TERM...
(Tonight through Sunday Night)
Issued at 1027 PM CDT Fri Jul 31 2026

Another incredible July day is just about in the books and come to
think of it, so is August and it looks like we're going to start the
month off wet. After some pre-frontal showers earlier this evening
west of I-65, we're already looking upstream at storms in southern
Missouri that are headed this way. No severe is expected with
anything overnight as CAPE values are sub-500 J/Kg and shear values
remain low. The earlier rain and the overnight stuff are all part of
a larger system that has really wrapped up over the mid-Mississippi
valley this evening and as the attendant upper low digs into the
Ohio and TN valleys tonight and tomorrow morning, you are going to
feel the difference in humidity. Heck, I would argue most are
already feeling it with dew points having jumped up into the low 70s
just within the last several hours. This increase in moisture will
help to fuel a few storms tonight into tomorrow morning and then
after a break in the action during the late morning and early
afternoon hours, the actual front will start to push through Middle
TN. CAMs are very consistent with the bulk of the thunderstorm
activity tomorrow being east of I-65 -- at least the stronger and
heavier stuff -- some time between 4 pm and 9 pm. If you haven't
seen, SPC did introduce a Slight Risk for our eastern counties in
this window tomorrow. I have been talking about a low wind risk
tomorrow and I really don't think it's much different after looking
at forecast soundings again tonight. Poor lapse rates throughout
this event should act to curb a more widespread wind event. Better
lapse rates are expected to be seen north of us, which is why
there's a better severe threat in KY and even a 2% tor risk. If for
some reason those better lapse rates leak southward, there could be
a low tornado risk here, too, but models have been very consistent
for the last 4 nights indicating that won't be the case. So, a low
wind risk and then the rainfall I've been talking about, too. I
really like the idea that any flooding concerns will be very
isolated, meaning we won't see any widespread flooding issues.
Chances for 2"+ anywhere east of I-65 remain at 20-30%, so I think
we're good there as 1-hr Flash Flood Guidance is still higher than
that in the areas where the rain is expected. In the end, be weather
aware tomorrow afternoon and evening and all should be well.

After the core of the storms exit into East TN tomorrow evening, I
don't think we're going to be completely done with the rain. Models
continue to show the upper low pushing towards the mid-state on
Sunday and this should keep rain chances in the forecast through the
afternoon on Sunday. Not everybody will see rain, but many will with
at least a medium chance for a shower or brief storm. In fact,
several models have this upper low slow to exit the region and we
could see showers from it into Monday now, as well. This would
explain the slightly cooler temperatures now being seen Monday to
start off the week.

&&

.LONG TERM...
(Monday through next Saturday)
Issued at 1027 PM CDT Fri Jul 31 2026

I'm not sold on the rest of the forecast, especially as we near the
middle of next week. One or two models have diurnal activity Tuesday
and Wednesday and others are dry, so we'll have to work out those
details over the next few days. Outside of that, we should see
temperatures revert back to something closer to normal around
Wednesday.

&&

.AVIATION...
(12Z TAFS)
Issued at 635 AM CDT Sat Aug 1 2026

Morning convection rolls across Middle Tennessee this morning,
with most of the terminals being impacted now or in the near
future. Also look for surface winds to increase from the south
this morning as a strong cold front approaches from the west, and
will remain gusty throughout the day. We do expect a second round
of convection to develop generally along and east of I-65 early
this afternoon, and then progress eastward throughout the p.m.
hours, with showers lingering on the Cumberland Plateau into the
evening. Look for areas of fog and also low ceilings to develop
later in the evening and especially overnight behind the fropa.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      90  65  83  62 /  70  10  70  30
Clarksville    86  69  80  69 /  50  20  70  30
Crossville     83  67  80  65 / 100  80  50  30
Columbia       90  68  83  68 /  50   0  70  20
Cookeville     85  68  80  67 /  90  60  60  40
Jamestown      84  67  81  66 / 100  80  60  30
Lawrenceburg   88  67  82  67 /  60  10  70  30
Murfreesboro   91  69  84  69 /  80  10  50  30
Waverly        86  68  79  67 /  40  10  80  30

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...Unger
LONG TERM....Unger
AVIATION.....Rose

In the hours before

Local storm report, Aug 1, 7:14 AM CDT, 1 hour 29 minutes before
Preliminary Local Storm Report
National Weather Service Nashville TN
714 AM CDT Sat Aug 1 2026

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

0657 AM     Flash Flood      1 NE Green Hill         36.24N 86.56W
08/01/2026                   Wilson             TN   NWS Employee

            Portion of Needmore Rd flooded with several
            inches of standing water.

&&

APB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 5:52 AM CDTFlash Flood WarningOHXDavidson, Smith, Sumner, Trousdale, Wilson3 hr
Aug 1, 3:51 PM CDTSpecial Weather StatementOHXVan Buren, Warren39 min
Aug 1, 4:03 PM CDTSpecial Weather StatementOHXGrundy42 min
Aug 1, 6:57 PM CDTSpecial Weather StatementOHXJackson, Putnam, Smith48 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.