Alert archive / Tennessee / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Memphis, TN

March 27, 20214 counties in Tennessee

NWS Memphis, TN issued this flash flood warning at Mar 27, 2021, 10:03 PM CDT for 4 counties in Tennessee. It was in force for 4 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: Mar 27, 2021, 10:03 PM CDT (03:03 UTC)
Expired: Mar 28, 2021, 2:08 AM CDT
In force: 4 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Benton County, TN, Carroll County, TN, Decatur County, TN, Henderson County, TN

The radar

The Ft Campbell radar (KHPX), 118 km from the middle of the area, began a volume at 03:03 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 00:00Z, 3.1 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: 200 J/kg
Mixed-layer CIN: -290 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 458 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

557 
WGUS54 KMEG 280303
FFWMEG
TNC005-017-039-077-280615-
/O.NEW.KMEG.FF.W.0024.210328T0303Z-210328T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
1003 PM CDT Sat Mar 27 2021

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Southern Benton County in western Tennessee...
  Southeastern Carroll County in western Tennessee...
  Northeastern Decatur County in western Tennessee...
  Northern Henderson County in western Tennessee...

* Until 115 AM CDT.

* At 1003 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. 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...
  Huntingdon, Natchez Trace State Park, Wildersville, Parkers 
  Crossroads, Bargerton, Clarksburg, Dollar, Westport, Garretsburg, 
  Yuma, Buena Vista, Jeannette, Parker's Cross Roads, Sugar Tree, 
  Hillard, Palmer Shelter, Scott Hill, Union Cross and Jumbo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3584 8850 3595 8846 3603 8800 3601 8800
      3600 8800 3597 8802 3595 8801 3594 8799
      3594 8797 3594 8793 3590 8793 3588 8794
      3586 8794 3583 8797 3578 8798 3572 8853

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 2 HOURS 

$$

2 follow-up statements

190 
WGUS54 KMEG 280558
FFWMEG
TNC005-017-039-077-280715-
/O.EXT.KMEG.FF.W.0024.000000T0000Z-210328T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
1258 AM CDT Sun Mar 28 2021

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Southern Benton County in western Tennessee...
  Southeastern Carroll County in western Tennessee...
  Northeastern Decatur County in western Tennessee...
  Northern Henderson County in western Tennessee...

* Until 215 AM CDT.

* At 1258 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area.

  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...
  Huntingdon, Natchez Trace State Park, Wildersville, Parkers 
  Crossroads, Bargerton, Clarksburg, Dollar, Westport, Garretsburg, 
  Yuma, Buena Vista, Jeannette, Parker's Cross Roads, Sugar Tree, 
  Hillard, Palmer Shelter, Scott Hill, Union Cross and Jumbo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3584 8850 3595 8846 3603 8800 3601 8800
      3600 8800 3597 8802 3595 8801 3594 8799
      3594 8797 3594 8793 3590 8793 3588 8794
      3586 8794 3583 8797 3578 8798 3572 8853

FLASH FLOOD...RADAR INDICATED

$$

867 
WGUS74 KMEG 280708
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
208 AM CDT Sun Mar 28 2021

TNC005-017-039-077-280718-
/O.CAN.KMEG.FF.W.0024.000000T0000Z-210328T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benton TN-Carroll TN-Decatur TN-Henderson TN-
208 AM CDT Sun Mar 28 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN BENTON, 
SOUTHEASTERN CARROLL, NORTHEASTERN DECATUR AND NORTHERN HENDERSON 
COUNTIES...

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

A Flash Flood Watch remains in effect until 700 AM CDT for portions 
of East Arkansas...North Mississippi...Southeast Missouri and West 
Tennessee.

LAT...LON 3584 8850 3595 8846 3603 8800 3601 8800
      3600 8800 3597 8802 3595 8801 3594 8799
      3594 8797 3594 8793 3590 8793 3588 8794
      3586 8794 3583 8797 3578 8798 3572 8853

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 7:02 PM CDT	Tornado Warning	MEG	Dyer, Lauderdale	43 min
Mar 27, 7:03 PM CDT	Tornado Warning	MEG	Lauderdale, Tipton	42 min
Mar 27, 7:22 PM CDT	Special Weather Statement	MEG	Haywood	23 min
Mar 27, 7:35 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Gibson, Haywood, Madison	40 min
Mar 27, 7:41 PM CDT	Special Weather Statement	MEG	Chester	34 min
Mar 27, 7:44 PM CDT	Special Weather Statement	MEG	Dyer	31 min
Mar 27, 7:52 PM CDT	Special Weather Statement	MEG	Lauderdale	23 min
Mar 27, 7:54 PM CDT	Special Weather Statement	MEG	Shelby	21 min
Mar 27, 8:04 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Henderson	41 min
Mar 27, 8:07 PM CDT	Tornado Warning	MEG	Shelby, Tipton	38 min
Mar 27, 8:18 PM CDT	Severe Thunderstorm Warning	MEG	Henderson, Madison	42 min
Mar 27, 8:20 PM CDT	Special Weather Statement	MEG	Dyer	25 min
Mar 27, 8:23 PM CDT	Flash Flood Warning	MEG	Chester, Henderson, Madison	6 hr
Mar 27, 8:26 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	11 min
Mar 27, 8:37 PM CDT	Tornado Warning	MEG	Decatur	23 min
Mar 27, 8:39 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale, Tipton	34 min
Mar 27, 8:43 PM CDT	Areal Flood Advisory	MEG	Decatur	19 min
Mar 27, 8:43 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Henderson, Madison	47 min
Mar 27, 9:02 PM CDT	Flash Flood Warning	MEG	Decatur	7 hr
Mar 27, 9:09 PM CDT	Areal Flood Advisory	MEG	Shelby	3 hr
Mar 27, 9:20 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Haywood, Madison	40 min
Mar 27, 9:29 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Decatur, Henderson	31 min
Mar 27, 9:32 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman, Haywood, Madison, Shelby, Tipton	43 min
Mar 27, 9:37 PM CDT	Areal Flood Advisory	MEG	Carroll, Gibson, Henry, Weakley	3 hr
Mar 27, 9:53 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby, Tipton	52 min
Mar 27, 9:58 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Crockett, Fayette, Gibson, Hardeman and 3 more	47 min
Mar 27, 10:17 PM CDT	Flash Flood Warning	MEG	Fayette, Shelby	3 hr
Mar 27, 10:28 PM CDT	River Flood Warning	MEG	Decatur, Perry	11 days
Mar 27, 10:35 PM CDT	Flash Flood Warning	MEG	Haywood, Madison, Tipton	3 hr
Mar 27, 10:39 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman, Haywood, Lauderdale, Shelby, Tipton	36 min
Mar 27, 10:42 PM CDT	Tornado Warning	MEG	Chester, Decatur, Hardeman, Henderson, Madison	29 min
Mar 27, 10:49 PM CDT	Flash Flood Warning	MEG	Shelby	3 hr
Mar 27, 11:09 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Haywood, McNairy, Madison	51 min
Mar 27, 11:11 PM CDT	Flash Flood Warning	MEG	Fayette, Hardeman	3 hr
Mar 27, 11:25 PM CDT	Tornado Warning	MEG	Chester, Hardeman, McNairy	14 min
Mar 27, 11:54 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson, McNairy	51 min
Mar 27, 11:58 PM CDT	Tornado Warning	MEG	McNairy	17 min
Mar 28, 12:12 AM CDT	Tornado Warning	MEG	Hardin	33 min
Mar 28, 2:30 PM CDT	River Flood Warning	MEG	Benton, Henry, Houston, Humphreys, Stewart	10 days

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.