Alert archive / Tennessee / Flash Flood Warnings in 1998

Flash Flood Warning 17, NWS Memphis, TN

July 27, 1998Lauderdale County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jul 27, 1998, 4:29 AM CDT for Lauderdale County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 27, 1998, 4:29 AM CDT (09:29 UTC)
Expired
Jul 27, 1998, 7:00 AM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Whole counties

County Lauderdale County, TN

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 9.5 hours before the alert went out and 107 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, Little Rock, AR at 00:00Z on 1998-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 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, Little Rock, AR at 00:00Z on 1998-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
269 J/kg
Mixed-layer CIN
-257 J/kg
Mixed-layer LCL
1575 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMEM 270930
FFWMEM
TNC097-271200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
429 AM CDT MON JUL 27 1998

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAUDERDALE COUNTY IN WESTERN TENNESSEE

* UNTIL 700 AM CDT

* AT 425 AM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN
ACROSS LAUDERDALE COUNTY. OVER 2 INCHES OF RAIN HAS FALLEN SINCE 3
AM CDT. LAW ENFORCEMENT OFFICIALS REPORTED STREET FLOODING
IN THE RIPLEY AREA..WITH SOME COUNTY ROADS ALSO CLOSED. THE
RAIN WAS MOVING SOUTHEAST AT 20 MPH..AND SHOULD END BY 6 AM.

.MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT
TO CROSS BRIDGES...DIPS...OR$ LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 4:22 AM CDTSevere Thunderstorm WarningMEGMadison33 min
Jul 27, 8:21 AM CDTFlash Flood WarningMEGHardeman, Madison3 hr

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.