Alert archive / Tennessee / Flash Flood Warnings in 2003

Flash Flood Warning 102, NWS Nashville, TN

August 11, 2003Cumberland County, Tennessee

NWS Nashville, TN issued this flash flood warning at Aug 11, 2003, 1:17 PM CDT for Cumberland County, Tennessee. It was in force for 118 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
Aug 11, 2003, 1:17 PM CDT (18:17 UTC)
Expired
Aug 11, 2003, 3:15 PM CDT
In force
118 min
Issued by
NWS Nashville, TN
Area
Counties, with a storm outline in the text

County Cumberland County, TN

The radar

The Knoxville radar (KMRX), 119 km from the middle of the area, began a volume at 18:16 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 12:00Z, 6.3 hours before the alert went out and 168 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 2003-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 414 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 12:00Z on 2003-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.1939Sfc1 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
414 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
21 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 111818
FFWBNA
TNC035-112015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
117 PM CDT MON AUG 11 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CUMBERLAND COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF CROSSVILLE

* UNTIL 315 PM CDT

* AT 115 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER CROSSVILLE...MOVING EAST AT 15 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE IN...   
  EASTERN CUMBERLAND COUNTY AT 145 PM CDT

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS OCCURRING OR
IMMINENT. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES, DIPS, OR OTHER LOW SPOTS IF WATER COVERS THE ROAD.
NEVER TRY TO CROSS A FLOWING STREAM, EVEN A SMALL ONE, ON FOOT. TO
ESCAPE RISING WATER, MOVE TO HIGHER GROUND.

LAT...LON 3598 8512 3585 8496 3645 8406 3670 8438

$$

07
1 follow-up statement
000 
WGUS74 KOHX 112108
FFSBNA
TNC035-112130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
407 PM CDT MON AUG 11 2003

...THE FLASH FLOOD WARNING FOR CUMBERLAND COUNTY HAS EXPIRED...

THE EARLIER STORMS...WHICH BROUGHT HEAVY RAIN AND SOME FLOODING TO
CUMBERLAND COUNTY...HAVE NOW DISSIPATED. THEREFORE...THE FLASH
FLOOD WARNING FOR CUMBERLAND COUNTY HAS BEEN ALLOWED TO EXPIRE.

$$

21

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 9:39 PM CDTSevere Thunderstorm WarningOHXJackson36 min
Aug 10, 10:17 PM CDTSevere Thunderstorm WarningOHXPutnam28 min
Aug 10, 10:18 PM CDTSevere Thunderstorm WarningOHXPutnam27 min
Aug 10, 10:45 PM CDTSevere Thunderstorm WarningOHXPutnam30 min
Aug 11, 3:53 PM CDTSevere Thunderstorm WarningOHXSumner37 min

Nearby

Flash Flood Warnings in Tennessee, 2003Every flash flood warning in 2003

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.