Alert archive / Tennessee / Flash Flood Warnings in 2006

Flash Flood Warning 13, NWS Nashville, TN

May 21, 2006Giles County, Lawrence County, Tennessee

NWS Nashville, TN issued this flash flood warning at May 21, 2006, 7:58 PM CDT for Giles County, Lawrence County, Tennessee. It was in force for 92 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: May 21, 2006, 7:58 PM CDT (00:58 UTC)
Expired: May 21, 2006, 9:30 PM CDT
In force: 92 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Giles County, TN, Lawrence County, TN

The radar

The Northeast Alabama radar (KHTX), 100 km from the middle of the area, began a volume at 00:59 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 21, 8:05 PM CDT	FLASH FLOOD	1 E Lawrenceburg, TN	WATER OVER SEVERAL ROADS

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 00:00Z, 1.0 hours before the alert went out and 114 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: 540 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 752 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KOHX 220059
FFWOHX
TNC055-099-220230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
758 PM CDT SUN MAY 21 2006

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GILES COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF PULASKI
  LAWRENCE COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF LAWRENCEBURG

* UNTIL 930 PM CDT

* AT 751 PM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  FROM A THUNDERSTORM 6 MILES EAST OF LAWRENCEBURG...MOVING SOUTHEAST
  AT 35 MPH. WATER WAS REPORTED OVER HIGHWAY 43 BETWEEN ETHREIDGE    
  AND LAWRENCEBURG. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ELKTON.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3541 8726 3528 8745 3487 8693 3504 8674

$$

31

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 7:18 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	57 min
May 21, 7:52 PM CDT	Severe Thunderstorm Warning	OHX	Giles	53 min
May 21, 8:31 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	40 min
May 21, 8:54 PM CDT	Severe Thunderstorm Warning	OHX	Giles	26 min
May 21, 9:09 PM CDT	Severe Thunderstorm Warning	OHX	Maury	51 min
May 21, 9:19 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall	56 min

Nearby

Flash Flood Warnings in Tennessee, 2006 Every flash flood warning in 2006

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.