Alert archive / Tennessee / Flash Flood Warnings in 2026
Flash Flood Warning 35, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at Jul 21, 2026, 7:30 PM CDT for Sumner County, Trousdale County, Tennessee. It was in force for 6 hr. 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
- Jul 21, 2026, 7:30 PM CDT (00:30 UTC)
- Expired
- Jul 22, 2026, 1:15 AM CDT
- In force
- 6 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Sumner County, TN, Trousdale County, TN
The radar
The Nashville radar (KOHX), 21 km from the middle of the area, began a volume at 00:33 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 9:44 PM CDT | FLASH FLOOD | 1 Wnw Hendersonville, TN | Flooding in Walton Trace neighborhood. |
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 134 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 00:00Z, 0.5 hours before the alert went out and 32 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.
- Mixed-layer CAPE
- 2403 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 13.1
The text
As transmitted.
120
WGUS54 KOHX 220030
FFWOHX
TNC165-169-220330-
/O.NEW.KOHX.FF.W.0035.260722T0030Z-260722T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
730 PM CDT Tue Jul 21 2026
The National Weather Service in Nashville has issued a
* Flash Flood Warning for...
Southern Sumner County in middle Tennessee...
Trousdale County in middle Tennessee...
* Until 1030 PM CDT.
* At 730 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Rainfall amounts of 1 to 3
inches are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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...
Gallatin, Hartsville, Hendersonville, Goodlettsville, White House,
Millersville, Bledsoe Creek State Park, Cottontown, Green Hill and
Dixon Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3650 8624 3644 8617 3642 8597 3629 8613
3635 8623 3630 8626 3635 8628 3631 8630
3631 8636 3636 8636 3631 8639 3634 8644
3628 8652 3632 8655 3626 8657 3624 8661
3640 8675 3641 8669 3646 8667 3645 8629
FLASH FLOOD...RADAR INDICATED
$$
Mueller3 follow-up statements
115
WGUS54 KOHX 220248 RRA
FFWOHX
TNC165-169-220415-
/O.EXT.KOHX.FF.W.0035.000000T0000Z-260722T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
948 PM CDT Tue Jul 21 2026
The National Weather Service in Nashville has extended the
* Flash Flood Warning for...
Southern Sumner County in middle Tennessee...
Trousdale County in middle Tennessee...
* Until 1115 PM CDT.
* At 948 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Additional rainfall amounts of
1 to 3 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Gallatin, Hartsville, Hendersonville, Goodlettsville, White House,
Millersville, Bledsoe Creek State Park, Cottontown, Green Hill and
Dixon Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3650 8624 3644 8617 3642 8597 3629 8613
3635 8623 3630 8626 3635 8628 3631 8630
3631 8636 3636 8636 3631 8639 3634 8644
3628 8652 3632 8655 3626 8657 3624 8661
3640 8675 3641 8669 3646 8667 3645 8629
FLASH FLOOD...RADAR INDICATED
$$
Dirkes999
WGUS54 KOHX 220348
FFWOHX
TNC165-169-220615-
/O.EXT.KOHX.FF.W.0035.000000T0000Z-260722T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
1048 PM CDT Tue Jul 21 2026
The National Weather Service in Nashville has extended the
* Flash Flood Warning for...
Southern Sumner County in middle Tennessee...
Trousdale County in middle Tennessee...
* Until 115 AM CDT.
* At 1048 PM CDT, emergency management reported flash flooding from
thunderstorms producing heavy rain across the warned area. Between
1 and 3 inches of rain have fallen. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
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...
Gallatin, Hartsville, Hendersonville, Goodlettsville, White House,
Millersville, Bledsoe Creek State Park, Cottontown, Green Hill and
Dixon Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3650 8624 3644 8617 3642 8597 3629 8613
3635 8623 3630 8626 3635 8628 3631 8630
3631 8636 3636 8636 3631 8639 3634 8644
3628 8652 3632 8655 3626 8657 3624 8661
3640 8675 3641 8669 3646 8667 3645 8629
FLASH FLOOD...OBSERVED
$$
Mueller390
WGUS74 KOHX 220606
FFSOHX
Flash Flood Statement
National Weather Service Nashville TN
106 AM CDT Wed Jul 22 2026
TNC165-169-220616-
/O.EXP.KOHX.FF.W.0035.000000T0000Z-260722T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sumner TN-Trousdale TN-
106 AM CDT Wed Jul 22 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 115 AM CDT EARLY THIS MORNING
FOR SOUTHERN SUMNER AND TROUSDALE COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
A Flood Watch remains in effect until 700 AM CDT for a portion of
Middle Tennessee.
&&
LAT...LON 3650 8624 3644 8617 3642 8597 3629 8613
3635 8623 3630 8626 3635 8628 3631 8630
3631 8636 3636 8636 3631 8639 3634 8644
3628 8652 3632 8655 3626 8657 3624 8661
3640 8675 3641 8669 3646 8667 3645 8629
$$
DirkesWhat 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 Jul 21, 6:24 PM CDT, 1 hour 6 minutes earlier. Its key messages:
- Updated at 618 PM CDT Tue Jul 21 2026
- A Heat Advisory is in place until 8 pm this evening with heat index temperatures reaching 105+ degrees.
- There is a slight risk (level 2/5) for severe weather now through tonight. Main impacts are damaging winds and flash flooding.
- Cooler and drier conditions arrive Wednesday and continue through the end of the week.
Area forecast discussion, Jul 21, 6:24 PM CDT, 1 hour 6 minutes before
Area Forecast Discussion National Weather Service Nashville TN 624 PM CDT Tue Jul 21 2026 ...New AVIATION... .KEY MESSAGES... Updated at 618 PM CDT Tue Jul 21 2026 - A Heat Advisory is in place until 8 pm this evening with heat index temperatures reaching 105+ degrees. - There is a slight risk (level 2/5) for severe weather now through tonight. Main impacts are damaging winds and flash flooding. - Cooler and drier conditions arrive Wednesday and continue through the end of the week. && .SHORT TERM... (Rest of today through Wednesday Night) Issued at 1113 AM CDT Tue Jul 21 2026 Hot and humid conditions are in place across the region with temperatures approaching 90 degrees and dew points in the mid and upper 70s. Highs will top out in the low to mid 90s which will make it feel oppressive this afternoon with heat index values up to 110 to even 115 degrees. A Heat Advisory is in place until 8 PM. The heat is the first course of hazardous weather today. A surface front is moving south through Missouri into central Illinois this morning ahead of a shortwave in the northwest upper flow. The combination of lift and the ample instability and moisture at the surface will allow storms to fire across southern Indiana and Ohio over the next couple of hours. Some activity is already bubbling across our northeastern counties and some heavy downpours can't be ruled out this afternoon, but the main severe concern will be with the activity coming out of Kentucky this evening as bulk shear increases. Damaging winds will be the main severe storm threat this evening and into early Wednesday along with a very low risk of a tornado along the TN/KY state line. Instability and storm organization will decrease the further storms move south and the deeper we get into the overnight hours. The window of greatest severe potential looks like 7 PM to around 1 AM. In addition to the severe threat, some instances of flash flooding will be a threat. PWAT values are around 1.9-2" across Middle Tennessee, so very high rain rates can be expected with storms today and tonight. HREF and associated CAMs show pockets of 2" of rain with 90th percentile values showing the potential for over 4" in isolated areas. With the wet July we've had so far, this would be sufficient for flash flooding in those areas. The HREF shows the higher probabilities of over 2" and higher 90th percentile values along and east of I-65. A Flood Watch is in effect through 12z Wednesday. By 12z Wednesday, the surface front will be draped across the area from SW to NE. South of the surface front, additional showers and storms will be possible Wednesday afternoon along the plateau. Shear will be lower than tonight, so I don't expect any severe activity Wednesday afternoon. Behind the front, lower dew points will filter in from the northwest through the day and into Wednesday night. The surface front will be through the entire area by Wednesday night which will usher in a very pleasant night with low dropping into the low to mid 60s. && .LONG TERM... (Thursday through next Tuesday) Issued at 1113 AM CDT Tue Jul 21 2026 To start the long term period, we will be in the nicest airmass we've had so far this summer. Dew points on Thursday will be in the low to mid 60s with highs in the low to mid 80s. Friday will be similar but a couple degrees warmer. A shortwave will ride northwest upper flow and approach the area Friday night into Saturday which will reintroduce some low to medium rain chances. Temperatures will creep up over the weekend with the possibility of a couple more shortwaves bringing additional storm storms chances going into early next week. There is some uncertainty of how far east ridging influences pushes which will affect our rain chances and temperatures next week. && .AVIATION... (00Z TAFS) Issued at 618 PM CDT Tue Jul 21 2026 The first 6 hours of this TAF cycle will be riddled with TS and gusty winds as a broken line of thunderstorms moves into TN from the north. These should come to an end for all terminals by 05-06Z this evening and while cats will improve after the storms for CKV/BNA/MQY, MVFR cigs will return around sunrise Wednesday at BNA/MQY. CSV/SRB will bear the brunt of longer MVFR cigs through the night and sticking around after storms until lunchtime on Wednesday. Winds outside of storms will be light and we will see a shift to the northwest/north after storms pass. With storms, winds may be gusty at times with northwest to north gusts of 30 to 40 kts. && .PRELIMINARY POINT TEMPS/POPS... Nashville 73 87 65 83 / 80 10 0 0 Clarksville 70 86 62 83 / 50 0 0 0 Crossville 69 82 60 80 / 80 60 30 20 Columbia 73 88 65 84 / 80 20 0 0 Cookeville 71 84 63 81 / 80 30 10 0 Jamestown 69 82 60 80 / 90 40 10 0 Lawrenceburg 73 86 65 83 / 70 30 10 10 Murfreesboro 73 88 65 84 / 70 20 0 0 Waverly 71 86 63 83 / 70 0 0 0 && .OHX WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for TNZ005>011-023>034- 056>066-075-077>080-093>095. Flood Watch through Wednesday morning for TNZ008>011-024>034- 056>066-075-077-078-080-093>095. && SHORT TERM...Reagan LONG TERM....Reagan AVIATION.....Unger
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:04 PM CDT | Severe Thunderstorm Warning | OHX | Clay, Fentress, Jackson, Overton, Pickett | 41 min |
| Jul 21, 7:08 PM CDT | Flash Flood Warning | OHX | Macon, Sumner | 4 hr |
| Jul 21, 7:10 PM CDT | Severe Thunderstorm Warning | OHX | Montgomery, Robertson, Sumner | 50 min |
| Jul 21, 7:14 PM CDT | Flash Flood Warning | OHX | Clay, Fentress, Jackson, Overton, Pickett | 118 min |
| Jul 21, 7:16 PM CDT | Flash Flood Warning | OHX | Robertson | 6 hr |
| Jul 21, 7:21 PM CDT | Severe Thunderstorm Warning | OHX | Houston, Montgomery, Stewart | 39 min |
| Jul 21, 7:37 PM CDT | Flash Flood Warning | OHX | Montgomery | 3 hr |
| Jul 21, 7:38 PM CDT | Severe Thunderstorm Warning | OHX | Macon, Robertson, Sumner, Trousdale, Wilson | 52 min |
| Jul 21, 7:46 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Robertson, Sumner, Wilson | 44 min |
| Jul 21, 7:58 PM CDT | Severe Thunderstorm Warning | OHX | Robertson, Sumner | 32 min |
| Jul 21, 8:01 PM CDT | Flash Flood Warning | OHX | Davidson, Smith, Wilson | 7 hr |
| Jul 21, 8:01 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Dickson, Montgomery | 29 min |
| Jul 21, 8:15 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Rutherford, Williamson, Wilson | 60 min |
| Jul 21, 8:17 PM CDT | Severe Thunderstorm Warning | OHX | Jackson, Macon, Putnam, Smith, Trousdale | 43 min |
| Jul 21, 8:30 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Dickson, Hickman, Houston, Montgomery and 1 more | 45 min |
| Jul 21, 8:33 PM CDT | Flash Flood Warning | OHX | Cannon, Rutherford, Williamson | 6 hr |
| Jul 21, 8:43 PM CDT | Tornado Warning | OHX | Dickson | 47 min |
| Jul 21, 8:45 PM CDT | Flash Flood Warning | OHX | Davidson, Robertson, Sumner, Wilson | 4 hr |
| Jul 21, 9:06 PM CDT | Flash Flood Warning | OHX | Cheatham | 5 hr |
| Jul 21, 9:18 PM CDT | Severe Thunderstorm Warning | OHX | Dickson, Hickman, Humphreys | 34 min |
| Jul 21, 9:26 PM CDT | Flash Flood Warning | OHX | Dickson, Hickman | 6 hr |
| Jul 21, 9:30 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Dickson, Hickman, Williamson | 22 min |
| Jul 21, 10:43 PM CDT | Flash Flood Warning | OHX | Lewis, Maury, Perry | 5 hr |
| Jul 21, 11:55 PM CDT | Flash Flood Warning | OHX | Maury | 3 hr |
| Jul 22, 12:24 AM CDT | Flash Flood Warning | OHX | Giles, Lawrence, Wayne | 4 hr |
| Jul 22, 12:49 AM CDT | Flash Flood Warning | OHX | Lewis, Perry | 3 hr |
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.