Alert archive / Tennessee / Flash Flood Warnings in 2026

Flash Flood Warning 21, NWS Nashville, TN

July 17, 20264 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Jul 17, 2026, 4:40 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: Jul 17, 2026, 4:40 PM CDT (21:40 UTC)
Expired: Jul 17, 2026, 7:45 PM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Cheatham County, TN, Dickson County, TN, Montgomery County, TN, Robertson County, TN

The radar

The Ft Campbell radar (KHPX), 33 km from the middle of the area, began a volume at 21:39 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.7 hours before the alert went out and 61 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: 742 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

850 
WGUS54 KOHX 172140
FFWOHX
TNC021-043-125-147-180045-
/O.NEW.KOHX.FF.W.0021.260717T2140Z-260718T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
440 PM CDT Fri Jul 17 2026

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Cheatham County in middle Tennessee...
  Northeastern Dickson County in middle Tennessee...
  Eastern Montgomery County in middle Tennessee...
  Western Robertson County in middle Tennessee...

* Until 745 PM CDT.

* At 440 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. 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...
  Ashland City, Coopertown, White Bluff, Pleasant View, Adams, Cedar 
  Hill and Cheatham Dam.

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 3664 8733 3664 8721 3664 8714 3664 8711
      3664 8710 3664 8704 3662 8703 3655 8698
      3643 8703 3635 8703 3626 8697 3613 8709
      3612 8719 3612 8725 3639 8734

FLASH FLOOD...RADAR INDICATED

$$

Cahill

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:17 PM CDT	Flash Flood Warning	OHX	Overton	118 min
Jul 16, 8:29 PM CDT	Flash Flood Warning	OHX	Rutherford	2 hr
Jul 17, 2:09 PM CDT	Flash Flood Warning	OHX	Lawrence	3 hr
Jul 17, 3:33 PM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Maury, Williamson	3 hr
Jul 17, 4:05 PM CDT	Special Weather Statement	OHX	Davidson	40 min
Jul 17, 4:05 PM CDT	Special Weather Statement	OHX	Coffee	40 min
Jul 17, 4:17 PM CDT	Special Weather Statement	OHX	Cumberland	43 min
Jul 17, 5:34 PM CDT	Flash Flood Warning	OHX	Cumberland, Fentress, Overton, Putnam	2 hr
Jul 17, 6:43 PM CDT	Flash Flood Warning	OHX	DeKalb, Jackson, Putnam, Van Buren, White	3 hr

Nearby

Flash Flood Warnings in Tennessee, 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.