Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 42, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at Jul 25, 2021, 5:19 PM CDT for Montgomery County, Tennessee. It was in force for 116 min. 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
- Jul 25, 2021, 5:19 PM CDT (22:19 UTC)
- Expired
- Jul 25, 2021, 7:15 PM CDT
- In force
- 116 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
County Montgomery County, TN
The radar
The Ft Campbell radar (KHPX), 16 km from the middle of the area, began a volume at 22:21 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 |
|---|---|---|---|
| Jul 25, 5:45 PM CDT | FLASH FLOOD | 5 Nnw Red River Estates, TN | MULTIPLE TWITTER IMAGES OF FLASH FLOODING EAST OF CLARKSVILLE |
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, 10.3 hours before the alert went out and 76 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
- 961 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1017 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
655
WGUS54 KOHX 252219
FFWOHX
TNC125-260015-
/O.NEW.KOHX.FF.W.0042.210725T2219Z-210726T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
519 PM CDT Sun Jul 25 2021
The National Weather Service in Nashville has issued a
* Flash Flood Warning for...
Northeastern Montgomery County in middle Tennessee...
* Until 715 PM CDT.
* At 519 PM 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...
Clarksville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3663 8712 3663 8713 3662 8713 3658 8717
3654 8726 3651 8737 3659 8736 3664 8730
3664 8721 3664 8714 3664 8711
FLASH FLOOD...RADAR INDICATED
$$
WhiteheadThe office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 12:41 PM CDT | Heat Advisory | OHX | Dickson, Hickman, Houston, Humphreys, Lawrence, Lewis and 4 more | 6 hr |
| Jul 25, 3:59 PM CDT | Special Weather Statement | OHX | Robertson | 31 min |
| Jul 25, 4:56 PM CDT | Areal Flood Advisory | OHX | Davidson | 2 hr |
| Jul 25, 5:00 PM CDT | Areal Flood Advisory | OHX | Montgomery | 2 hr |
| Jul 25, 5:15 PM CDT | Flash Flood Warning | OHX | Davidson | 2 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.