Alert archive / Tennessee / Flash Flood Warnings in 2002

Flash Flood Warning 34, NWS Memphis, TN

July 12, 2002Decatur County, Hardin County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jul 12, 2002, 12:37 PM CDT for Decatur County, Hardin County, Tennessee. It was in force for 113 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
Jul 12, 2002, 12:37 PM CDT (17:37 UTC)
Expired
Jul 12, 2002, 2:30 PM CDT
In force
113 min
Issued by
NWS Memphis, TN
Area
Whole counties

Counties Decatur County, TN, Hardin County, TN

The radar

The Memphis radar (KNQA), 157 km from the middle of the area, began a volume at 17:37 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, 5.6 hours before the alert went out and 161 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 2002-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1179 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 2002-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
1179 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 121737
FFWMEM
TNC039-071-121930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
1236 PM CDT FRI JUL 12 2002

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DECATUR COUNTY IN TENNESSEE
  HARDIN COUNTY IN SOUTHWEST TENNESSEE

* UNTIL 230 PM CDT.

* AT 1232 PM CDT...WEATHER RADAR INDICATED VERY HEAVY RAIN OVER 
DECATUR AND NORTHERN HARDIN COUNTIES. BETWEEN TWO AND THREE INCHES 
OF RAIN HAS FALLEN OVER ABOUT THE PAST HOUR...AND AN ADDITIONAL ONE 
TO TWO INCHES OF RAIN IS POSSIBLE BY 200 PM.

* CITIES AFFECTED THROUGH 230 PM CDT INCLUDE...
  WALNUT GROVE...SAVANNAH...PICKWICK DAM...PARSONS...OLIVE HILL...
  MORRIS CHAPEL...DECATURVILLE...CRUMP

.A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS FLOODED
ROADWAYS.

.STAY TUNED TO THIS NATIONAL WEATHER SERVICE BROADCAST FOR THE LATEST
UPDATES AND INFORMATION. TO REPORT FLOODING ONLY...CALL 1 800 4 3 2 0
8 7 5.

Nearby

Flash Flood Warnings in Tennessee, 2002Every flash flood warning in 2002

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.