Alert archive / Tennessee / Flash Flood Warnings in 2009

Flash Flood Warning 13, NWS Nashville, TN

April 29, 2009Perry County, Tennessee

NWS Nashville, TN issued this flash flood warning at Apr 29, 2009, 4:29 PM CDT for Perry County, Tennessee. It was in force for 49 min. 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 29, 2009, 4:29 PM CDT (21:29 UTC)
Expired
Apr 29, 2009, 5:18 PM CDT
In force
49 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

County Perry County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.5 hours before the alert went out and 120 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2009-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2009-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
148 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
10 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 292129
FFWOHX
TNC135-292330-
/O.NEW.KOHX.FF.W.0013.090429T2129Z-090429T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
429 PM CDT WED APR 29 2009

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PERRY COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF LINDEN...

* UNTIL 630 PM CDT

* AT 427 PM CDT...DOPPLER WEATHER RADAR INDICATES INTENSE RAINFALL
  FROM THUNDERSTORMS MOVING NORTHWARD THROUGH PERRY COUNTY. FLOODING
  OF CREEKS AND STREAMS AND ROADWAYS IS LIKELY WITH THESE STORMS.
  
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LOBELVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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. MOVE TO HIGHER GROUND.

&&

LAT...LON 3583 8796 3583 8790 3581 8784 3584 8781
      3584 8772 3574 8773 3572 8771 3569 8774
      3567 8774 3565 8771 3552 8773 3551 8791
      3559 8800 3574 8802

$$

BOYD
2 follow-up statements
000 
WGUS74 KOHX 292156
FFSOHX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
456 PM CDT WED APR 29 2009

TNC135-292330-
/O.CON.KOHX.FF.W.0013.000000T0000Z-090429T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERRY TN-
456 PM CDT WED APR 29 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR PERRY
COUNTY...

AT 453 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A CLUSTER OF THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE 
WARNED AREA. TWO INCHES OF RAIN HAS FALLEN IN THE LAST HOUR ACROSS 
PART OF PERRY COUNTY...WITH AN ADDITIONAL INCH OF RAIN POSSIBLE AS
STORMS WORK NORTHWARD THROUGH THE COUNTY.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ARE LINDEN 
AND LOBELVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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. MOVE TO HIGHER GROUND.

&&

LAT...LON 3583 8796 3583 8790 3581 8784 3584 8781
      3584 8772 3574 8773 3572 8771 3569 8774
      3567 8774 3565 8771 3552 8773 3551 8791
      3559 8800 3574 8802

$$

BOYD
000 
WGUS74 KOHX 292218
FFSOHX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
518 PM CDT WED APR 29 2009

TNC135-292229-
/O.CAN.KOHX.FF.W.0013.000000T0000Z-090429T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERRY TN-
518 PM CDT WED APR 29 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR PERRY COUNTY...

LAT...LON 3583 8796 3583 8790 3581 8784 3584 8781
      3584 8772 3574 8773 3572 8771 3569 8774
      3567 8774 3565 8771 3552 8773 3551 8791
      3559 8800 3574 8802

$$

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 2:21 PM CDTFlash Flood WarningOHXWayne3 hr

Nearby

Flash Flood Warnings in Tennessee, 2009Every flash flood warning in 2009

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.