Alert archive / Tennessee / Flash Flood Warnings in 2021

Flash Flood Warning 67, NWS Nashville, TN

October 5, 2021Lawrence County, Lewis County, Wayne County, Tennessee

NWS Nashville, TN issued this flash flood warning at Oct 5, 2021, 9:08 PM CDT for Lawrence County, Lewis County, Wayne County, Tennessee. It was in force for 3 hr. 4 reports 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: Oct 5, 2021, 9:08 PM CDT (02:08 UTC)
Expired: Oct 6, 2021, 12:00 AM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Lawrence County, TN, Lewis County, TN, Wayne County, TN

The radar

The Northeast Alabama radar (KHTX), 124 km from the middle of the area, began a volume at 02:10 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
Oct 5, 9:16 PM CDT	FLASH FLOOD	8 Nw Lawrenceburg, TN	ORTON ROAD IN DEERFIELD REPORTEDLY UNDER WATER
Oct 5, 9:18 PM CDT	FLASH FLOOD	2 Sw Loretto, TN	MOUNT NEBO ROAD REPORTEDLY UNDER WATER
Oct 5, 10:11 PM CDT	HEAVY RAIN 4.5	1 E Loretto, TN	COCORAHS STATION LORETTO 1.1 E REPORS 4.5 INCHES OF RAIN SINCE 415PM WITH RAIN STILL FALLING
Oct 5, 10:11 PM CDT	HEAVY RAIN 4.5	1 E Loretto, TN	COCORAHS STATION LORETTO 1.1 E REPORTS 4.5 INCHES OF RAIN SINCE 415PM WITH RAIN STILL FALLING

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.1 hours before the alert went out and 137 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: 334 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 725 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

663 
WGUS54 KOHX 060208
FFWOHX
TNC099-101-181-060500-
/O.NEW.KOHX.FF.W.0067.211006T0208Z-211006T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
908 PM CDT Tue Oct 5 2021

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Lawrence County in middle Tennessee...
  South Central Lewis County in middle Tennessee...
  East Central Wayne County in middle Tennessee...

* Until midnight CDT.

* At 908 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain moving back into Lawrence and Lewis Counties this 
  evening. Radar estimates between 1 and 4 inches of rain have 
  fallen over the past few hours. 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...
  Lawrenceburg, Loretto, St. Joseph, Leoma, Westpoint, Henryville 
  and Iron City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3553 8758 3553 8741 3501 8722 3500 8722
      3500 8726 3500 8728 3500 8737 3500 8739
      3500 8740 3500 8743 3500 8748 3500 8750
      3500 8752 3500 8756 3500 8759

FLASH FLOOD...RADAR INDICATED

$$

Shamburger

2 follow-up statements

506 
WGUS74 KOHX 060257
FFSOHX

Flash Flood Statement
National Weather Service Nashville TN
957 PM CDT Tue Oct 5 2021

TNC181-060307-
/O.CAN.KOHX.FF.W.0067.000000T0000Z-211006T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wayne TN-
957 PM CDT Tue Oct 5 2021

...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL WAYNE COUNTY...

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

LAT...LON 3553 8758 3553 8741 3500 8722 3500 8759
      3505 8758 3506 8759 3514 8759 3519 8757
      3519 8758

$$

TNC099-101-060500-
/O.CON.KOHX.FF.W.0067.000000T0000Z-211006T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence TN-Lewis TN-
957 PM CDT Tue Oct 5 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT 
FOR LAWRENCE AND SOUTH CENTRAL LEWIS COUNTIES...

At 957 PM CDT, Emergency management and the public reported flash 
flooding ongoing across the warned area with several roadways and 
creeks flooded. Between 1 and 4 inches of rain have fallen so far 
today, and moderate to heavy rain will continue this evening.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management and public 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...
  Lawrenceburg, Loretto, St. Joseph, Leoma, Westpoint, Henryville 
  and Iron City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3553 8758 3553 8741 3500 8722 3500 8759
      3505 8758 3506 8759 3514 8759 3519 8757
      3519 8758

FLASH FLOOD...OBSERVED

$$

Shamburger

581 
WGUS74 KOHX 060458
FFSOHX

Flash Flood Statement
National Weather Service Nashville TN
1158 PM CDT Tue Oct 5 2021

TNC099-101-060508-
/O.EXP.KOHX.FF.W.0067.000000T0000Z-211006T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence TN-Lewis TN-
1158 PM CDT Tue Oct 5 2021

...FLASH FLOOD WARNING WILL EXPIRE AT MIDNIGHT CDT TONIGHT FOR 
LAWRENCE AND SOUTH CENTRAL LEWIS COUNTIES...

Flooding is no longer expected to pose an immediate threat. 
Conditions will be monitored as light to moderate rain continues 
overnight. Please continue to heed remaining road closures.

LAT...LON 3553 8758 3553 8741 3500 8722 3500 8759
      3505 8758 3506 8759 3514 8759 3519 8757
      3519 8758

$$

Schaper

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 5, 7:11 PM CDT	Special Weather Statement	OHX	Lewis	34 min
Oct 5, 7:34 PM CDT	Areal Flood Advisory	OHX	Lawrence, Lewis	96 min
Oct 6, 12:11 AM CDT	River Flood Advisory	OHX	Lawrence	20 hr
Oct 6, 1:14 AM CDT	Areal Flood Advisory	OHX	Giles, Hickman, Maury	2 hr
Oct 6, 2:30 AM CDT	Flash Flood Warning	OHX	Hickman, Maury	2 hr
Oct 6, 2:48 AM CDT	Areal Flood Advisory	OHX	Dickson, Hickman	2 hr
Oct 6, 3:06 AM CDT	Flash Flood Watch	OHX	Bedford, Coffee, Cumberland, Giles, Grundy, Lawrence and 4 more	28 hr
Oct 6, 3:31 AM CDT	Flash Flood Warning	OHX	Dickson	119 min
Oct 6, 3:48 AM CDT	Areal Flood Advisory	OHX	Dickson, Montgomery	2 hr
Oct 6, 10:48 AM CDT	Special Weather Statement	OHX	Van Buren	27 min
Oct 6, 11:43 AM CDT	Special Weather Statement	OHX	White	32 min
Oct 6, 11:59 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Putnam, Van Buren, White	46 min
Oct 6, 2:49 PM CDT	Areal Flood Advisory	OHX	Cumberland, Overton, Putnam, Van Buren, White	4 hr
Oct 6, 3:41 PM CDT	Special Weather Statement	OHX	Fentress	34 min
Oct 6, 3:46 PM CDT	Special Weather Statement	OHX	Van Buren	29 min
Oct 6, 3:56 PM CDT	Flash Flood Warning	OHX	Van Buren	6 hr
Oct 6, 4:14 PM CDT	Special Weather Statement	OHX	Fentress	31 min
Oct 6, 4:22 PM CDT	Areal Flood Advisory	OHX	Fentress	113 min
Oct 6, 4:45 PM CDT	Special Weather Statement	OHX	Pickett	30 min
Oct 6, 5:01 PM CDT	Special Weather Statement	OHX	Rutherford	29 min
Oct 6, 5:05 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Rutherford	25 min
Oct 6, 5:09 PM CDT	Tornado Warning	OHX	Cumberland	36 min
Oct 6, 5:29 PM CDT	Special Weather Statement	OHX	Rutherford	31 min
Oct 6, 5:35 PM CDT	Areal Flood Advisory	OHX	Fentress, Pickett	115 min
Oct 6, 5:44 PM CDT	Tornado Warning	OHX	Cumberland	31 min
Oct 6, 6:14 PM CDT	Special Weather Statement	OHX	Cumberland	31 min
Oct 6, 6:20 PM CDT	Tornado Warning	OHX	Cumberland, Fentress	25 min
Oct 6, 6:43 PM CDT	Special Weather Statement	OHX	Fentress	32 min
Oct 6, 6:47 PM CDT	Special Weather Statement	OHX	Hickman	28 min
Oct 6, 6:53 PM CDT	Tornado Warning	OHX	Fentress	37 min

Nearby

Flash Flood Warnings in Tennessee, 2021 Every flash flood warning in 2021

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.