Alert archive / Tennessee / Flash Flood Warnings in 2021

Flash Flood Warning 6, NWS Nashville, TN

February 28, 20218 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at Feb 28, 2021, 6:42 PM CST for 8 counties in Tennessee. It was in force for 5 hr. 7 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: Feb 28, 2021, 6:42 PM CST (00:42 UTC)
Expired: Mar 1, 2021, 12:00 AM CST
In force: 5 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Cheatham County, TN, Davidson County, TN, Dickson County, TN, Houston County, TN, Humphreys County, TN, Montgomery County, TN, Robertson County, TN, Sumner County, TN

The radar

The Ft Campbell radar (KHPX), 72 km from the middle of the area, began a volume at 00:43 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
Feb 28, 7:00 PM CST	FLASH FLOOD	Mcewen, TN	SEVERAL ROADS FLOODED ACROSS THE COUNTY INCLUDING HARGIS ROAD.
Feb 28, 7:24 PM CST	FLASH FLOOD	Springfield, TN	MULTIPLE ROADS FLOODED ACROSS THE COUNTY
Feb 28, 7:39 PM CST	FLASH FLOOD	Springfield, TN	NUMEROUS ROADS FLOODED ACROSS THE COUNTY INCLUDING SMITH STREET AT 5TH STREET...SAGE ROAD AT HWY 76...7428 HWY 49 EAST...OLD COOPERTOWN ROAD AT WOODS ROAD...CROSS PLAINS ROAD...BETHLEHEM ROAD...DIXON ROAD...AND HWY 25 EAST.
Feb 28, 8:25 PM CST	FLASH FLOOD	Fredonia, TN	FLOODING REPORTED ON BUDDS CREEK ROAD...VERNON CREEK ROAD AT LOCUST GROVE CHURCH ROAD...AND SALEM ROAD AT HWY 48
Feb 28, 8:39 PM CST	FLASH FLOOD	3 Ene Chapmansboro, TN	TSPOTTER REPORT OF WATER OVER THE ROAD AT LOCKERTSVILLE RD AND HARRISTOWN RD IN NW ASHLAND CITY. ROAD CLOSED.
Feb 28, 8:50 PM CST	FLASH FLOOD	4 Nnw Ashland City, TN	LOCKERTSVILLE ROAD AT HARRISTOWN ROAD IS FLOODED
Feb 28, 10:30 PM CST	FLASH FLOOD	1 Ne Pleasant View, TN	SEVERAL SWIFT WATER RESCUES IN PROGRESS ACROSS ROBERTSON COUNTY INCLUDING ONE NEAR PLEASANT VIEW

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, 0.7 hours before the alert went out and 87 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: 419 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted.

460 
WGUS54 KOHX 010042
FFWOHX
TNC021-037-043-083-085-125-147-165-010400-
/O.NEW.KOHX.FF.W.0006.210301T0042Z-210301T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
642 PM CST Sun Feb 28 2021

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Cheatham County in middle Tennessee...
  Northwestern Davidson County in middle Tennessee...
  Dickson County in middle Tennessee...
  Southeastern Houston County in middle Tennessee...
  Humphreys County in middle Tennessee...
  Southeastern Montgomery County in middle Tennessee...
  Robertson County in middle Tennessee...
  Northern Sumner County in middle Tennessee...

* Until 1000 PM CST.

* At 642 PM CST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Springfield, Dickson, Ashland City, Waverly, Joelton, White House, 
  Millersville, Greenbrier, Coopertown, New Johnsonville, Ridgetop, 
  McEwen, Cross Plains, Portland, Hurricane Mills, Pleasant View, 
  Charlotte, Orlinda, Adams, Vanleer and Cedar Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3609 8795 3665 8691 3664 8621 3600 8754
      3592 8765 3592 8793 3594 8793 3596 8802

FLASH FLOOD...RADAR INDICATED

$$

Shamburger

2 follow-up statements

006 
WGUS74 KOHX 010105
FFSOHX

Flash Flood Statement
National Weather Service Nashville TN
705 PM CST Sun Feb 28 2021

TNC021-037-043-083-085-125-147-165-010400-
/O.CON.KOHX.FF.W.0006.000000T0000Z-210301T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cheatham TN-Davidson TN-Dickson TN-Houston TN-Humphreys TN-
Montgomery TN-Robertson TN-Sumner TN-
705 PM CST Sun Feb 28 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS 
EVENING FOR CHEATHAM, NORTHWESTERN DAVIDSON, DICKSON, SOUTHEASTERN 
HOUSTON, HUMPHREYS, SOUTHEASTERN MONTGOMERY, ROBERTSON AND NORTHERN 
SUMNER COUNTIES...

At 705 PM CST, Doppler radar indicated thunderstorms producing very 
heavy rain across the warned area. Between 1 and 3 inches of rain 
has fallen in the past 1 to 2 hours. Flash flooding is ongoing or 
expected to begin shortly.

HAZARD...Life threatening flash flooding.

SOURCE...Doppler radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Springfield, Dickson, Ashland City, Waverly, White House, 
  Millersville, Greenbrier, Coopertown, New Johnsonville, Ridgetop, 
  McEwen, Cross Plains, Portland, Hurricane Mills, Pleasant View, 
  Charlotte, Orlinda, Adams, Vanleer and Cedar Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3609 8795 3665 8691 3664 8621 3600 8754
      3592 8765 3592 8793 3594 8793 3596 8802

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Shamburger

867 
WGUS54 KOHX 010344
FFWOHX
TNC021-037-043-083-085-125-147-165-010600-
/O.EXT.KOHX.FF.W.0006.000000T0000Z-210301T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
944 PM CST Sun Feb 28 2021

The National Weather Service in Nashville has extended the

* Flash Flood Warning for...
  Cheatham County in middle Tennessee...
  Northwestern Davidson County in middle Tennessee...
  Dickson County in middle Tennessee...
  Southeastern Houston County in middle Tennessee...
  Humphreys County in middle Tennessee...
  Southeastern Montgomery County in middle Tennessee...
  Robertson County in middle Tennessee...
  Northern Sumner County in middle Tennessee...

* Until midnight CST.

* At 944 PM CST, social media reports indicate that flash flooding 
  continues across the area with numerous roads flooded and closed. 
  Between 1 and 3 inches of rain have fallen so far this evening.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Public.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Springfield, Dickson, Ashland City, Waverly, White House, 
  Millersville, Greenbrier, Coopertown, New Johnsonville, Ridgetop, 
  McEwen, Cross Plains, Portland, Hurricane Mills, Pleasant View, 
  Charlotte, Orlinda, Adams, Vanleer and Cedar Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3609 8795 3665 8691 3664 8621 3600 8754
      3592 8765 3592 8793 3594 8793 3596 8802

FLASH FLOOD...OBSERVED

$$

Shamburger

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:01 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Houston, Montgomery	29 min
Feb 28, 6:23 PM CST	Special Weather Statement	OHX	Cheatham	37 min
Feb 28, 6:25 PM CST	Special Weather Statement	OHX	Houston, Humphreys	35 min
Feb 28, 6:30 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Montgomery, Robertson	30 min
Feb 28, 6:40 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery	35 min
Feb 28, 6:47 PM CST	Tornado Warning	OHX	Dickson, Humphreys	13 min
Feb 28, 6:48 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner	42 min
Feb 28, 7:06 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Robertson	24 min
Feb 28, 7:15 PM CST	Severe Thunderstorm Warning	OHX	Macon, Robertson, Sumner, Trousdale	30 min
Feb 28, 7:24 PM CST	Flash Flood Warning	OHX	Dickson, Hickman, Humphreys, Perry	3 hr
Feb 28, 7:26 PM CST	Flash Flood Warning	OHX	Cheatham, Davidson, Macon, Smith, Sumner, Trousdale and 2 more	4 hr
Feb 28, 7:32 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Williamson, Wilson	43 min
Feb 28, 7:39 PM CST	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon	36 min
Feb 28, 8:05 PM CST	Severe Thunderstorm Warning	OHX	Smith, Sumner, Trousdale, Wilson	25 min
Feb 28, 8:16 PM CST	Flash Flood Warning	OHX	Clay, Jackson, Overton, Pickett	3 hr
Feb 28, 8:22 PM CST	Special Weather Statement	OHX	Rutherford, Wilson	23 min
Feb 28, 8:23 PM CST	Flash Flood Warning	OHX	Davidson, Maury, Rutherford, Smith, Williamson, Wilson	3 hr
Feb 28, 8:39 PM CST	Special Weather Statement	OHX	Fentress, Overton, Pickett, Putnam	36 min
Feb 28, 8:44 PM CST	River Flood Advisory	OHX	Cheatham, Montgomery	3 days
Feb 28, 9:35 PM CST	River Flood Advisory	OHX	Davidson, Sumner, Wilson	22 days
Feb 28, 9:38 PM CST	River Flood Advisory	OHX	Houston, Montgomery, Stewart	8 hr
Feb 28, 9:54 PM CST	Special Weather Statement	OHX	Bedford, Coffee	66 min
Feb 28, 11:05 PM CST	River Flood Advisory	OHX	Cheatham	3 hr
Feb 28, 11:09 PM CST	Areal Flood Advisory	OHX	Houston, Humphreys, Montgomery, Robertson, Stewart	3 hr
Feb 28, 11:55 PM CST	Areal Flood Advisory	OHX	Cheatham, Davidson, Dickson, Houston, Humphreys, Montgomery and 2 more	3 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Hickman	26 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Humphreys	4 days
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Perry	44 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Montgomery, Robertson	4 hr
Mar 1, 12:43 AM CST	River Flood Advisory	OHX	Davidson	115 min
Mar 1, 2:13 AM CST	River Flood Advisory	OHX	Cheatham	7 hr
Mar 1, 2:15 AM CST	River Flood Advisory	OHX	Sumner, Trousdale, Wilson	42 hr
Mar 1, 2:15 AM CST	River Flood Advisory	OHX	Davidson	18 hr
Mar 1, 2:40 AM CST	River Flood Advisory	OHX	Hickman	12 hr
Mar 1, 3:44 AM CST	River Flood Advisory	OHX	Bedford	6 hr
Mar 1, 4:14 AM CST	River Flood Warning	OHX	Montgomery, Robertson	38 hr
Mar 1, 5:27 AM CST	River Flood Warning	OHX	Stewart	32 hr
Mar 1, 9:44 AM CST	River Flood Advisory	OHX	Giles	26 hr
Mar 1, 10:06 AM CST	River Flood Advisory	OHX	Lawrence	20 hr
Mar 1, 10:28 AM CST	River Flood Warning	OHX	Montgomery	32 hr
Mar 1, 3:08 PM CST	River Flood Advisory	OHX	Cheatham, Davidson, Williamson	21 hr

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.