Alert archive / Tennessee / Flash Flood Warnings in 1998

Flash Flood Warning 39, NWS Nashville, TN

April 30, 1998Van Buren County, Tennessee

NWS Nashville, TN issued this flash flood warning at Apr 30, 1998, 6:20 PM CDT for Van Buren County, Tennessee. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 30, 1998, 6:20 PM CDT (23:20 UTC)
Expired
Apr 30, 1998, 7:50 PM CDT
In force
90 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Van Buren County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.3 hours before the alert went out and 114 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 1998-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 313 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 1998-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 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
313 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
286 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 
TTAA00 KBNA 302321
FFWBNA
TNC051-061-175-177-010050-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
620 PM CDT THU APR 30 1998

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN FRANKLIN COUNTY IN MIDDLE TENNESSEE
  GRUNDY COUNTY IN SOUTHEASTERN TENNESSEE
  VAN BUREN COUNTY IN SOUTHEASTERN TENNESSEE
  WARREN COUNTY IN MIDDLE TENNESSEE

* UNTIL 750 PM CDT

* AT 615 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN MOVING ACROSS
SECTIONS OF FRNAKLIN...GRUNDY...WARREN AND VAN BUREN COUNTIES.
RAINFALL AMOUNTS OF 1 TO 1.5 INCHES HAS LIKELY FALLEN SINCE
515 PM CAUSING RAPID RISES ALONG CREEKS AND STREAMS AS WELL AS
DRAINAGE DITCHES ALONG ROADWAYS. ADDITONAL RAINFALL AMOUNTS OF A
HALF TO ONE INCH ARE POSSIBLE THROUGH 7 PM WHICH WILL LIKELY MAKE
MATTERS WORSE WHERE HIGH WATER IS NOW OCCURRING.

* DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 4:07 PM CDTSevere Thunderstorm WarningOHXCoffee63 min
Apr 30, 4:35 PM CDTSevere Thunderstorm WarningOHXWarren50 min
Apr 30, 5:48 PM CDTSevere Thunderstorm WarningOHXGrundy32 min
Apr 30, 6:20 PM CDTFlash Flood WarningOHXFranklin, Grundy, Warren90 min
Apr 30, 6:26 PM CDTSevere Thunderstorm WarningOHXVan Buren34 min
Apr 30, 6:46 PM CDTFlash Flood WarningOHXOverton, Pickett, Putnam119 min
Apr 30, 6:46 PM CDTFlash Flood WarningOHXWhite119 min

Nearby

Flash Flood Warnings in Tennessee, 1998Every flash flood warning in 1998

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.