Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 60, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at Sep 18, 2021, 3:25 PM CDT for Bedford County, Coffee County, Tennessee. It was in force for 4 hr. 4 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
- Sep 18, 2021, 3:25 PM CDT (20:25 UTC)
- Expired
- Sep 18, 2021, 7:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bedford County, TN, Coffee County, TN
The radar
The Northeast Alabama radar (KHTX), 57 km from the middle of the area, began a volume at 20:25 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 |
|---|---|---|---|
| Sep 18, 3:50 PM CDT | FLASH FLOOD | Normandy, TN | NORMAN CREEK IS OVERFLOWING ITS BANKS AND FLOWING OVER HWY 269 AND CASCADE HOLLOW ROAD IN NORMANDY |
| Sep 18, 3:50 PM CDT | FLASH FLOOD | Normandy, TN | NORMAN CREEK IS OVERFLOWING ITS BANKS AND FLOWING OVER HWY 269 AND CASCADE HOLLOW ROAD IN NORMANDY. DEMENT BRIDGE AREA AND COLLEGE STREET ALSO FLOODED. |
| Sep 18, 3:50 PM CDT | FLASH FLOOD | Normandy, TN | NORMAN CREEK IS OVERFLOWING ITS BANKS NEAR NORMANDY |
| Sep 18, 4:00 PM CDT | FLASH FLOOD | Tullahoma, TN | HEAVY RAIN CAUSED FLOODING ISSUES AROUND TULLAHOMA WITH AN ESTIMATED 2 TO 5 INCHES OF WATER FLOWING OVER SOME ROADS AND INTO YARDS. |
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, 8.4 hours before the alert went out and 85 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
- 1085 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
631
WGUS54 KOHX 182025
FFWOHX
TNC003-031-182230-
/O.NEW.KOHX.FF.W.0060.210918T2025Z-210918T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
325 PM CDT Sat Sep 18 2021
The National Weather Service in Nashville has issued a
* Flash Flood Warning for...
Southeastern Bedford County in middle Tennessee...
Southwestern Coffee County in middle Tennessee...
* Until 530 PM CDT.
* At 325 PM CDT, the public reported thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Public reported.
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...
Shelbyville, Manchester, Tullahoma, Wartrace, Normandy and Raus.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3558 8637 3552 8611 3538 8609 3533 8620
3533 8626 3534 8626 3536 8624 3537 8627
3538 8625 3539 8628 3541 8625 3541 8628
3537 8634 3536 8633 3532 8644 3536 8649
3535 8653 3539 8657 3552 8654
FLASH FLOOD...OBSERVED
$$
Whitehead1 follow-up statement
552
WGUS54 KOHX 182223
FFWOHX
TNC003-031-190000-
/O.EXT.KOHX.FF.W.0060.000000T0000Z-210919T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
523 PM CDT Sat Sep 18 2021
The National Weather Service in Nashville has extended the
* Flash Flood Warning for...
Southeastern Bedford County in middle Tennessee...
Southwestern Coffee County in middle Tennessee...
* Until 700 PM CDT.
* At 523 PM CDT, the public reported thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Public reported.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Shelbyville, Manchester, Tullahoma, Wartrace, Normandy and Raus.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3558 8637 3552 8611 3538 8609 3533 8620
3533 8626 3534 8626 3536 8624 3537 8627
3538 8625 3539 8628 3541 8625 3541 8628
3537 8634 3536 8633 3532 8644 3536 8649
3535 8653 3539 8657 3552 8654
FLASH FLOOD...OBSERVED
$$
07The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 7:04 PM CDT | Areal Flood Advisory | OHX | Perry, Wayne | 2 hr |
| Sep 17, 8:32 PM CDT | Areal Flood Advisory | OHX | Hickman | 58 min |
| Sep 18, 2:24 AM CDT | Flash Flood Watch | OHX | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more | 65 hr |
| Sep 18, 9:54 AM CDT | Areal Flood Advisory | OHX | Cheatham, Davidson, Dickson, Houston, Humphreys, Stewart and 1 more | 3 hr |
| Sep 18, 10:28 AM CDT | Areal Flood Advisory | OHX | Davidson, Rutherford, Sumner, Williamson, Wilson | 3 hr |
| Sep 18, 10:49 AM CDT | Areal Flood Advisory | OHX | Jackson, Smith, Trousdale, Wilson | 3 hr |
| Sep 18, 11:21 AM CDT | Areal Flood Advisory | OHX | Jackson, Overton, Putnam | 3 hr |
| Sep 18, 1:29 PM CDT | Areal Flood Advisory | OHX | Bedford, Coffee | 3 hr |
| Sep 18, 4:15 PM CDT | Areal Flood Advisory | OHX | Giles | 2 hr |
| Sep 18, 4:32 PM CDT | River Flood Advisory | OHX | Bedford | 4 hr |
| Sep 18, 5:21 PM CDT | Flash Flood Warning | OHX | Giles | 114 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.