Alert archive / Tennessee / Flash Flood Warnings in 2005

Flash Flood Warning 9, NWS Nashville, TN

April 7, 2005Montgomery County, Tennessee

NWS Nashville, TN issued this flash flood warning at Apr 7, 2005, 7:16 PM CDT for Montgomery County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 7, 2005, 7:16 PM CDT (00:16 UTC)
Expired: Apr 7, 2005, 10:15 PM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Montgomery County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.3 hours before the alert went out and 81 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: 398 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KOHX 080016
FFWOHX
TNC125-080315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
716 PM CDT THU APR 7 2005

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MONTGOMERY COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF CLARKSVILLE

* UNTIL 1015 PM CDT

* AT 712 PM CDT...A CLUSTER OF HEAVY SHOWERS AND THUNDERSTORMS       
  CONTINUED OVER MOST OF WESTERN AND NORTHERN MONTGOMERY COUNTY,     
  WITH STILL MORE ACTIVITY UPSTREAM.

* LOCATIONS IN THE WARNED AREA INCLUDE CLARKSVILLE, OAKWOOD, AND     
  PALMYRA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3635 8760 3632 8727 3646 8712 3667 8711
      3667 8767
$$
ROSE

1 follow-up statement

000 
WGUS74 KOHX 080225
FFSOHX
TNC055-125-080330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
924 PM CDT THU APR 7 2005

...FLASH FLOOD WARNING FOR MONTGOMERY COUNTY WILL EXPIRE AT 1015
PM...
...FLASH FLOOD WARNING FOR GILES COUNTY WILL EXPIRE AT 1030 PM...

AT 919 PM, RADAR INDICATED THAT EARLIER HEAVY RAINS THAT PROMPTED THE
WARNINGS HAD DECREASED SIGNIFICANTLY. LIGHT TO MODERATE RAINFALL WILL
CONTINUE ACROSS PORTIONS OF THE WARNED AREAS AT LEAST UNTIL 1030 PM.
ALTHOUGH THE THREAT OF NEW FLOODING HAS DIMINISHED, RUNOFF FROM THIS
EVENINGS RAIN MAY STILL CAUSE HAZARDOUS DRIVING CONDITIONS. REMEMBER
TO NEVER DRIVE YOUR CAR ACROSS A FLOODED ROADWAY. FLOODING IS THE
NUMBER ONE WEATHER KILLER IN THE UNITED STATES, AND MOST FLASH FLOOD
DEATHS OCCUR IN AUTOMOBILES. IF YOU ENCOUNTER A FLOODED STRETCH OF
ROAD, TURN AROUND. DONT DROWN.
$$
ROSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:28 PM CDT	Flash Flood Warning	OHX	Giles	3 hr

Nearby

Flash Flood Warnings in Tennessee, 2005 Every flash flood warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.