Alert archive / Tennessee / Flash Flood Warnings in 2011

Flash Flood Warning 28, NWS Nashville, TN

May 2, 20115 counties in Tennessee

NWS Nashville, TN issued this flash flood warning at May 2, 2011, 10:17 PM CDT for 5 counties in Tennessee. It was in force for 12 hr. 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 2, 2011, 10:17 PM CDT (03:17 UTC)
Expired
May 3, 2011, 10:15 AM CDT
In force
12 hr
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

Counties Benton County, TN, Houston County, TN, Humphreys County, TN, Montgomery County, TN, Stewart County, TN

What was reported inside it

TimeReportWhereRemark
May 2, 10:32 PM CDTFLASH FLOOD12 Ne Dover, TNFLASH FLOODING REPORTED ON ROADWAYS ON HIGHWAY 120 NEAR BIG ROCK AND HIGHWAY 49 NEAR CARLISLE.

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, 3.3 hours before the alert went out and 112 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 00:00Z on 2011-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 53 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2011-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 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
53 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
491 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
462 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.9

Open this sounding in Storm Lab

The text

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

467 
WGUS54 KOHX 030317
FFWOHX
TNC005-083-085-125-161-030915-
/O.NEW.KOHX.FF.W.0028.110503T0317Z-110503T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1017 PM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF CAMDEN...
  HOUSTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF ERIN...
  HUMPHREYS COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF WAVERLY...
  WESTERN MONTGOMERY COUNTY IN MIDDLE TENNESSEE...
  STEWART COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF DOVER...

* UNTIL 415 AM CDT TUESDAY

* AT 1012 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH   
  FLOODING ACROSS NORTHWEST MIDDLE TENNESSEE FROM THUNDERSTORMS THAT HAVE
  MOVED ACROSS THE WARNED AREA THIS EVENING. WATER IS COVERING THE ROADS
  AT SEVERAL LOCATIONS. THE HEAVY RAINFALL WILL CONTINUE FOR THE NEXT
  SEVERAL HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TENNESSEE
  RIDGE...CAMDEN...AND DOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3665 8742 3634 8746 3634 8752 3619 8756
      3597 8754 3592 8771 3585 8772 3584 8781
      3581 8784 3585 8795 3581 8798 3581 8802
      3585 8803 3584 8821 3613 8821 3625 8810
      3636 8810 3637 8800 3643 8805 3667 8808

$$

BOYD
2 follow-up statements
528 
WGUS54 KOHX 030842
FFWOHX
TNC005-083-085-125-161-031515-
/O.EXT.KOHX.FF.W.0028.000000T0000Z-110503T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
342 AM CDT TUE MAY 3 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF CAMDEN...
  HOUSTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF ERIN...
  HUMPHREYS COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF WAVERLY...
  WESTERN MONTGOMERY COUNTY IN MIDDLE TENNESSEE...
  STEWART COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF DOVER...

* UNTIL 1015 AM CDT

* MODERATE TO HEAVY RAINFALL WILL CONTINUE TO MOVE ACROSS THE AREA   
  FOR SEVERAL HOURS ON TUESDAY MORNING, WITH FLOODING CONDITIONS     
  HAVING ALREADY BEEN REPORTED IN SOME LOCATIONS AS OF MONDAY        
  EVENING. 

* LOCATIONS IN THE WARNING INCLUDE, BUT ARE NOT LIMITED TO TENNESSEE 
  RIDGE, BIG SANDY, HURRICANE MILLS, CARLISLE, AND WOODLAWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 3665 8742 3634 8746 3634 8752 3619 8756
      3597 8754 3592 8771 3585 8772 3584 8781
      3581 8784 3585 8795 3581 8798 3581 8802
      3585 8803 3584 8821 3613 8821 3625 8810
      3636 8810 3637 8800 3643 8805 3667 8808

$$

ROSE
225 
WGUS54 KOHX 030933 CCA
FFWOHX
TNC005-083-085-125-161-031515-
/O.EXT.KOHX.FF.W.0028.000000T0000Z-110503T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
433 AM CDT TUE MAY 3 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF CAMDEN...
  HOUSTON COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF ERIN...
  HUMPHREYS COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF WAVERLY...
  WESTERN MONTGOMERY COUNTY IN MIDDLE TENNESSEE...
  STEWART COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF DOVER...

* UNTIL 1015 AM CDT

* MODERATE TO HEAVY RAINFALL WILL CONTINUE TO MOVE ACROSS THE AREA   
  FOR SEVERAL HOURS ON TUESDAY MORNING, WITH FLOODING CONDITIONS     
  HAVING ALREADY BEEN REPORTED IN SOME LOCATIONS AS OF MONDAY        
  EVENING. 

* LOCATIONS IN THE WARNING INCLUDE, BUT ARE NOT LIMITED TO TENNESSEE 
  RIDGE, BIG SANDY, CARLISLE, AND WOODLAWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 3665 8742 3634 8746 3634 8752 3619 8756
      3597 8754 3592 8771 3585 8772 3584 8781
      3581 8784 3585 8795 3581 8798 3581 8802
      3585 8803 3584 8821 3613 8821 3625 8810
      3636 8810 3637 8800 3643 8805 3667 8808

$$

ROSE

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 7:24 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Williamson36 min
May 3, 6:56 AM CDTAreal Flood WarningOHXDavidson, Robertson, Sumner3 hr
May 3, 8:40 AM CDTRiver Flood AdvisoryOHXMontgomery, Robertson3 hr
May 3, 10:50 AM CDTAreal Flood WarningOHXBenton, Houston, Humphreys, Montgomery, Stewart48 hr
May 3, 11:16 AM CDTRiver Flood WarningOHXMontgomery23 hr
May 3, 11:16 AM CDTRiver Flood WarningOHXMontgomery, Robertson33 hr
May 3, 11:25 AM CDTRiver Flood AdvisoryOHXPerry68 hr
May 3, 12:42 PM CDTRiver Flood WarningOHXBedford8 hr

Nearby

Flash Flood Warnings in Tennessee, 2011Every flash flood warning in 2011

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.