Alert archive / Tennessee / Flash Flood Warnings in 2004

Flash Flood Warning 65, NWS Nashville, TN

September 2, 2004Davidson County, Tennessee

NWS Nashville, TN issued this flash flood warning at Sep 2, 2004, 7:41 PM CDT for Davidson County, Tennessee. It was in force for 2 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
Sep 2, 2004, 7:41 PM CDT (00:41 UTC)
Expired
Sep 2, 2004, 9:45 PM CDT
In force
2 hr
Issued by
NWS Nashville, TN
Area
Counties, with a storm outline in the text

County Davidson County, TN

The radar

The Nashville radar (KOHX), 24 km from the middle of the area, began a volume at 00:44 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.7 hours before the alert went out and 17 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 2004-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1458 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 00:00Z on 2004-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.193958Sfc1 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
1458 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KOHX 030050
FFWBNA
TNC037-030245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
741 PM CDT THU SEP 2 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DAVIDSON COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF NASHVILLE

* UNTIL 945 PM CDT

* AT 731 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  AN AREA OF SHOWERS AND THUNDERSTORMS CONTINUING OVER CENTRAL AND EASTERN
  PARTS OF DAVIDSON COUNTY. THE SHOWERS AND STORMS WITH THE HEAVIEST
  RAIN WERE LOCATED IN THE NASHVILLE METRO AREA...AS WELL AS NEAR BELLE
  MEADE...OAK HILL...LAKEWOOD AND OLD HICKORY. RAINFALL RATES OVER 
  DAVIDSON COUNTY ARE ESTIMATED AT AROUND AN INCH AN HOUR...AND RAIN HAS
  BEEN FALLING AT THIS RATE FOR THE LAST TWO AND A HALF HOURS. RUN OFF
  FROM THESE SHOWERS AND STORMS WILL PRODUCE THE LIKELIHOOD OF FLASH
  FLOODING THROUGH 945 PM TONIGHT. THE SHOWERS AND STORMS WERE MOVING
  NORTH AT 10 TO 15 MPH. 

* THUNDERSTORMS WITH HEAVY RAINFALL WILL REMAIN OVER CENTRAL AND EASTERN
  PARTS OF DAVIDSON COUNTY THROUGH 945 PM.

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.

LAT...LON 3606 8690 3602 8672 3613 8673 3622 8660
      3632 8686

$$

19

Nearby

Flash Flood Warnings in Tennessee, 2004Every flash flood warning in 2004

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; radar from the NEXRAD Level II archive.