Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 30, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at May 3, 2021, 7:50 AM CDT for 6 counties in Tennessee. It was in force for 3 hr. 1 report 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
- May 3, 2021, 7:50 AM CDT (12:50 UTC)
- Expired
- May 3, 2021, 11:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hickman County, TN, Humphreys County, TN, Lewis County, TN, Maury County, TN, Perry County, TN, Williamson County, TN
The radar
The Nashville radar (KOHX), 108 km from the middle of the area, began a volume at 12:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 3, 9:00 AM CDT | FLASH FLOOD | Spring Hill, TN | FLOODING ON KEDRON ROAD IN SPRING HILL. SEVERAL REPORTS OF ROADS FLOODED AND CLOSED ACROSS WILLIAMSON COUNTY. |
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 12:00Z, 0.8 hours before the alert went out and 99 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
- 85 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 658 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 381 m²/s²
- 0-3 km storm-relative helicity
- 473 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
862
WGUS54 KOHX 031250
FFWOHX
TNC081-085-101-119-135-187-031600-
/O.NEW.KOHX.FF.W.0030.210503T1250Z-210503T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
750 AM CDT Mon May 3 2021
The National Weather Service in Nashville has issued a
* Flash Flood Warning for...
Hickman County in middle Tennessee...
South Central Humphreys County in middle Tennessee...
Northern Lewis County in middle Tennessee...
Northern Maury County in middle Tennessee...
Perry County in middle Tennessee...
Central Williamson County in middle Tennessee...
* Until 1100 AM CDT.
* At 750 AM 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...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...
Franklin, Columbia, Hohenwald, Centerville, Linden, Brentwood,
Spring Hill, Thompson's Station, Lobelville, Nunnelly, Primm
Springs, Lyles, Williamsport, Hampshire, Kimmins, Santa Fe,
Pleasantville, Bucksnort, Leipers Fork and I-65 East Of Columbia.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
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 3586 8794 3599 8675 3570 8674 3570 8681
3563 8689 3552 8797 3561 8804 3568 8802
3572 8803 3577 8799 3583 8797
FLASH FLOOD...RADAR INDICATED
$$
Schaper1 follow-up statement
816
WGUS74 KOHX 031557
FFSOHX
Flash Flood Statement
National Weather Service Nashville TN
1057 AM CDT Mon May 3 2021
TNC081-085-101-119-135-187-031607-
/O.EXP.KOHX.FF.W.0030.000000T0000Z-210503T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hickman TN-Humphreys TN-Lewis TN-Maury TN-Perry TN-Williamson TN-
1057 AM CDT Mon May 3 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 11 AM CDT THIS MORNING FOR
HICKMAN, SOUTH CENTRAL HUMPHREYS, NORTHERN LEWIS, NORTHERN MAURY,
PERRY AND CENTRAL WILLIAMSON COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 3586 8794 3599 8675 3570 8674 3570 8681
3563 8689 3552 8797 3561 8804 3568 8802
3572 8803 3577 8799 3583 8797
$$
13The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 4:25 AM CDT | Special Weather Statement | OHX | Lewis | 35 min |
| May 3, 4:41 AM CDT | Special Weather Statement | OHX | Williamson | 34 min |
| May 3, 4:57 AM CDT | Tornado Warning | OHX | Maury | 23 min |
| May 3, 5:12 AM CDT | Special Weather Statement | OHX | Wilson | 33 min |
| May 3, 5:18 AM CDT | Tornado Warning | OHX | Marshall, Maury | 16 min |
| May 3, 5:52 AM CDT | Areal Flood Advisory | OHX | Lawrence, Lewis, Maury, Wayne | 2 hr |
| May 3, 6:27 AM CDT | Tornado Warning | OHX | Cannon, Rutherford | 9 min |
| May 3, 6:31 AM CDT | Special Weather Statement | OHX | Maury | 29 min |
| May 3, 6:10 PM CDT | River Flood Advisory | OHX | Perry | 15 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.