Alert archive / Tennessee / Flash Flood Warnings in 2003

Flash Flood Warning 98, NWS Nashville, TN

August 6, 2003Clay County, Tennessee

NWS Nashville, TN issued this flash flood warning at Aug 6, 2003, 7:42 PM CDT for Clay 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
Aug 6, 2003, 7:42 PM CDT (00:42 UTC)
Expired
Aug 6, 2003, 9:45 PM CDT
In force
2 hr
Issued by
NWS Nashville, TN
Area
Counties, with a storm outline in the text

County Clay County, TN

The radar

The Nashville radar (KOHX), 108 km from the middle of the area, began a volume at 00:42 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 116 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 2003-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1001 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 2003-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
1001 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
852 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KOHX 070048
FFWBNA
TNC027-070245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
742 PM CDT WED AUG 6 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLAY COUNTY IN TENNESSEE

* UNTIL 945 PM CDT.

* AT 736 PM CDT...WEATHER RADAR INDICATED A SLOW MOVING THUNDERSTORM 
OVER CLAY COUNTY WHICH HAS ALREADY DROP OVER ONE AND ONE HALF INCHES 
OF RAIN.  THIS STORM WAS DRIFTING VERY SLOWLY TO THE SOUTH AND COULD 
PRODUCE ADDITIONAL HEAVY RAIN FALL TOTALS OVER CLAY COUNTY...

* CITIES AFFECTED THROUGH 945 PM CDT INCLUDE...
  CELINA

IF YOU ARE IN YOUR AUTOMOBILE DO NOT CROSS WATER OF UNKNOWN DEPTH.

STAY TUNED TO THIS NATIONAL WEATHER SERVICE BROADCAST FOR THE LATEST
UPDATES AND INFORMATION. TO REPORT FLOODING...CONTACT LOCAL LAW
ENFORCEMENT.

LAT...LON 3663 8531 3647 8530 3651 8554 3662 8569

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 5:50 PM CDTFlash Flood WarningOHXClay, Jackson115 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.