Alert archive / Tennessee / Flash Flood Warnings in 2017

Flash Flood Warning 23, NWS Nashville, TN

July 28, 2017Hickman County, Lewis County, Perry County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jul 28, 2017, 8:46 AM CDT for Hickman County, Lewis County, Perry County, Tennessee. It was in force for 89 min. 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: Jul 28, 2017, 8:46 AM CDT (13:46 UTC)
Expired: Jul 28, 2017, 10:15 AM CDT
In force: 89 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

Counties Hickman County, TN, Lewis County, TN, Perry County, TN

The radar

The Ft Campbell radar (KHPX), 133 km from the middle of the area, began a volume at 13:48 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 28, 9:00 AM CDT	FLASH FLOOD	3 E Linden, TN	SHORT CREEK ROAD WASHED OUT
Jul 28, 10:00 AM CDT	FLASH FLOOD	3 E Linden, TN	ONE HOME FLOODED IN SHORT CREEK AREA
Jul 28, 10:00 AM CDT	FLASH FLOOD	8 W Lobelville, TN	ONE HOME FLOODED IN PINEVIEW AREA
Jul 28, 10:07 AM CDT	HEAVY RAIN 6.25	1 Ne Hohenwald, TN	6.25 INCHES OF RAIN REPORTED BY COOP OBSERVER IN HOHENWALD.

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, 1.8 hours before the alert went out and 130 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 452 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

899 
WGUS54 KOHX 281346
FFWOHX
TNC081-101-135-281515-
/O.NEW.KOHX.FF.W.0023.170728T1346Z-170728T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Nashville TN
846 AM CDT FRI JUL 28 2017

The National Weather Service in Nashville has issued a

* Flash Flood Warning for...
  Lewis County in Middle Tennessee...
  Perry County in Middle Tennessee...
  Southwestern Hickman County in Middle Tennessee...

* Until 1015 AM CDT

* At 841 AM CDT, rainfall reports indicated more than 5 inches of 
  rain in many areas early this morning. Radar estimates showed over 
  7 inches in some spots. Although rain was moving out of the area 
  as of 841 AM CDT, flash flooding was occurring, and water levels 
  will remain dangerously high through mid morning. The Linden area 
  has had the greatest impact with water flowing over roads and 
  water rescues. Therefore, the flash flood warning has been 
  extended until 1015 AM CDT. 

* Some locations that will experience flooding include...
  Hohenwald, Linden, Lobelville, Gordonsburg, Kimmins, Mousetail
  Landing State Park and Pleasantville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3563 8803 3566 8802 3568 8802 3571 8804
      3573 8803 3577 8799 3580 8798 3582 8796
      3563 8736 3546 8738 3552 8797 3555 8800
      3561 8804

$$

13

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 5:10 AM CDT	Areal Flood Advisory	OHX	Hickman, Lewis, Perry	2 hr
Jul 28, 6:07 AM CDT	Flash Flood Warning	OHX	Hickman, Lewis, Perry	3 hr
Jul 28, 7:00 AM CDT	Flash Flood Warning	OHX	Lawrence, Lewis, Perry, Wayne	2 hr
Jul 28, 8:21 AM CDT	Areal Flood Advisory	OHX	Giles, Lawrence, Marshall	3 hr
Jul 28, 2:42 PM CDT	Areal Flood Advisory	OHX	Giles, Hickman, Lawrence, Lewis, Maury, Perry and 1 more	5 hr
Jul 28, 2:53 PM CDT	Special Weather Statement	OHX	Giles	37 min
Jul 28, 4:02 PM CDT	Special Weather Statement	OHX	Marshall, Maury	43 min
Jul 28, 4:20 PM CDT	Flash Flood Warning	OHX	Cannon, Rutherford	3 hr
Jul 28, 4:29 PM CDT	River Flood Advisory	OHX	Perry	16 hr
Jul 28, 4:29 PM CDT	River Flood Advisory	OHX	Giles	32 hr
Jul 28, 5:10 PM CDT	River Flood Advisory	OHX	Lawrence	15 hr

Nearby

Flash Flood Warnings in Tennessee, 2017 Every flash flood warning in 2017

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.