Alert archive / Tennessee / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS Memphis, TN

March 17, 20025 counties in Tennessee

NWS Memphis, TN issued this flash flood warning at Mar 17, 2002, 1:29 AM CST for 5 counties in 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
Mar 17, 2002, 1:29 AM CST (07:29 UTC)
Expired
Mar 17, 2002, 3:30 AM CST
In force
2 hr
Issued by
NWS Memphis, TN
Area
Counties, with a storm outline in the text

Counties Fayette County, TN, Hardeman County, TN, Haywood County, TN, Madison County, TN, Shelby County, TN

The radar

The Memphis radar (KNQA), 49 km from the middle of the area, began a volume at 07:29 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

Little Rock, AR (KLZK), launched 00:00Z, 7.5 hours before the alert went out and 80 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 2002-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 2002-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.1939587897117Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
401 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 170729
FFWMEM
TNC047-069-075-113-157-170930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
127 AM CST SUN MAR 17 2002

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAYETTE COUNTY IN SOUTHWEST TENNESSEE
  NORTHERN HARDEMAN COUNTY IN SOUTHWEST TENNESSEE
  SOUTHERN HAYWOOD COUNTY IN SOUTHWEST TENNESSEE
  SOUTHERN MADISON COUNTY IN SOUTHWEST TENNESSEE
  SOUTHERN SHELBY COUNTY IN SOUTHWEST TENNESSEE

* UNTIL 330 AM CST.

* AT 117 AM CST...WEATHER RADAR INDICATED WIDESPREAD SHOWERS AND     
  THUNDERSTORMS ACROSS THE WARNED AREA. RAINFALL RATES OF ONE   
  TO LOCALLY TWO INCHES PER HOUR IS POSSIBLE THROUGH 300 AM.         
  RADAR ESTIMATES INDICATE THAT 2 TO 3 INCHES OF RAIN HAS ALREADY    
  FALLEN ACROSS THE AREA SINCE LATE FRIDAY.

.BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY.

.STAY TUNED TO THIS NATIONAL WEATHER SERVICE BROADCAST FOR THE LATEST
UPDATES AND INFORMATION.

LAT...LON 3564 8877 3527 8882 3527 8919 3500 8920
          3499 9020 3533 9009 3541 8948 3557 8946

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 3:35 PM CSTFlash Flood WarningMEGFayette, Haywood, Shelby, Tipton3 hr
Mar 17, 4:41 PM CSTFlash Flood WarningMEGHenderson, Madison109 min

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.