Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 83, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Aug 21, 2021, 6:49 AM CDT for Benton County, Henry County, 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
- Aug 21, 2021, 6:49 AM CDT (11:49 UTC)
- Expired
- Aug 21, 2021, 10:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Benton County, TN, Henry County, TN
The radar
The Ft Campbell radar (KHPX), 78 km from the middle of the area, began a volume at 11:49 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, 11.8 hours before the alert went out and 133 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
- 689 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1089 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.1
The text
As transmitted.
910
WGUS54 KMEG 211149
FFWMEG
TNC005-079-211445-
/O.NEW.KMEG.FF.W.0083.210821T1149Z-210821T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
649 AM CDT Sat Aug 21 2021
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Northeastern Benton County in western Tennessee...
Northeastern Henry County in western Tennessee...
* Until 945 AM CDT.
* At 649 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 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...
Paris Landing State Park, Pine Hill and Big Sandy Unit Tennessee
National Wildlife Refuge.
This includes the following streams and drainages...
Little Crooked Creek, McGehee Branch, Blood River, Trace Creek,
Ross Branch, Betsy Branch, Tennessee River and Eagle Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3636 8811 3650 8826 3650 8805 3649 8806
3647 8805 3644 8806 3642 8804 3637 8800
3634 8797 3629 8795 3625 8795
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
518
WGUS54 KMEG 211419
FFWMEG
TNC005-079-211545-
/O.EXT.KMEG.FF.W.0083.000000T0000Z-210821T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
919 AM CDT Sat Aug 21 2021
The National Weather Service in Memphis has extended the
* Flash Flood Warning for...
Northeastern Benton County in western Tennessee...
Northeastern Henry County in western Tennessee...
* Until 1045 AM CDT.
* At 919 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Paris Landing State Park, Pine Hill and Big Sandy Unit Tennessee
National Wildlife Refuge.
This includes the following streams and drainages...
Little Crooked Creek, McGehee Branch, Blood River, Trace Creek,
Ross Branch, Betsy Branch, Tennessee River and Eagle Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3636 8811 3650 8826 3650 8805 3649 8806
3647 8805 3644 8806 3642 8804 3637 8800
3634 8797 3629 8795 3625 8795
FLASH FLOOD...RADAR INDICATED
$$
SWB927
WGUS74 KMEG 211551
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
1051 AM CDT Sat Aug 21 2021
TNC005-079-211601-
/O.EXP.KMEG.FF.W.0083.000000T0000Z-210821T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benton TN-Henry TN-
1051 AM CDT Sat Aug 21 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR NORTHEASTERN BENTON AND
NORTHEASTERN HENRY COUNTIES...
The heavy rain has ended and the threat for flash flooding is
diminishing. Please continue to heed remaining road closures.
LAT...LON 3636 8811 3650 8826 3650 8805 3649 8806
3647 8805 3644 8806 3642 8804 3637 8800
3634 8797 3629 8795 3625 8795
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:17 PM CDT | Areal Flood Advisory | MEG | Obion | 3 hr |
| Aug 21, 6:16 PM CDT | Areal Flood Advisory | MEG | Hardin | 3 hr |
Nearby
Flash Flood Warnings in Tennessee, 2021Every 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.