Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 39, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at Jul 19, 2021, 10:41 PM CDT for Humphreys County, Perry County, Tennessee. It was in force for 2 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 19, 2021, 10:41 PM CDT (03:41 UTC)
- Expired
- Jul 20, 2021, 12:45 AM CDT
- In force
- 2 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Humphreys County, TN, Perry County, TN
The radar
The Ft Campbell radar (KHPX), 120 km from the middle of the area, began a volume at 03:44 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, 3.7 hours before the alert went out and 127 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
- 304 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1435 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
983
WGUS54 KOHX 200341
FFWOHX
TNC085-135-200545-
/O.NEW.KOHX.FF.W.0039.210720T0341Z-210720T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
1041 PM CDT Mon Jul 19 2021
The National Weather Service in Nashville has issued a
* Flash Flood Warning for...
South Central Humphreys County in middle Tennessee...
Northwestern Perry County in middle Tennessee...
* Until 1245 AM CDT.
* At 1041 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2.5 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...
Lobelville and I-40 Near The Tennessee River.
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.
&&
LAT...LON 3587 8794 3590 8779 3579 8777 3570 8803
3572 8803 3573 8803 3577 8799 3580 8797
3583 8797
FLASH FLOOD...RADAR INDICATED
$$
Barnwell1 follow-up statement
029
WGUS74 KOHX 200437
FFSOHX
Flash Flood Statement
National Weather Service Nashville TN
1137 PM CDT Mon Jul 19 2021
TNC085-135-200545-
/O.CON.KOHX.FF.W.0039.000000T0000Z-210720T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Humphreys TN-Perry TN-
1137 PM CDT Mon Jul 19 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT TUESDAY
FOR SOUTH CENTRAL HUMPHREYS AND NORTHWESTERN PERRY COUNTIES...
At 1137 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2.5 inches of rain
have fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Lobelville and I-40 Near The Tennessee River.
The heaviest rain has moved south of the warned area...but an
additional quarter to half inch of rain will be possible before the
heavy rains recede.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3587 8794 3590 8779 3579 8777 3570 8803
3572 8803 3573 8803 3577 8799 3580 8797
3583 8797
FLASH FLOOD...RADAR INDICATED
$$
FBThe office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 10:13 PM CDT | Areal Flood Advisory | OHX | Hickman, Humphreys, Perry | 2 hr |
| Jul 20, 6:49 PM CDT | Flash Flood Warning | OHX | Wayne | 116 min |
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.