Alert archive / Tennessee / Tornado Warnings in 2003

Tornado Warning 4, NWS Memphis, TN

April 20, 2003Lauderdale County, Tennessee

NWS Memphis, TN issued this tornado warning at Apr 20, 2003, 6:47 PM CDT for Lauderdale County, Tennessee. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 20, 2003, 6:47 PM CDT (23:47 UTC)
Expired
Apr 20, 2003, 7:15 PM CDT
In force
28 min
Issued by
NWS Memphis, TN
Area
Counties, with a storm outline in the text

County Lauderdale County, TN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 20, 1:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.8 hours before the alert went out and 109 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 12:00Z on 2003-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 339 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2003-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.19395878Sfc1 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
339 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

874 
WFUS54 KMEG 202347
TORMEM
TNC097-210015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
647 PM CDT SUN APR 20 2003

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  LAUDERDALE COUNTY IN SOUTHWEST TENNESSEE

* UNTIL 715 PM CDT.

* AT 644 PM CDT...WEATHER RADAR INDICATED A TORNADO 7 MILES WEST OF
  RIPLEY...MOVING NORTHEAST AT 40 MPH.

* CITIES IN THE PATH OF THIS TORNADO THROUGH 715 PM CDT INCLUDE...
  RIPLEY...
  EDITH...

.IF YOU ARE NEAR THE PATH OF THIS TORNADO...TAKE COVER IN AN INTERIOR
ROOM ON THE LOWEST FLOOR. PROTECT YOUR BODY FROM FLYING DEBRIS.

.IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT.

.HAIL UP TO THE SIZE OF GOLFBALLS IS ALSO POSSIBLE WITH THIS STORM.

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

LAT...LON 3575 8980 3562 8965 3581 8940 3595 8957

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 3:05 PM CDTSevere Thunderstorm WarningMEGShelby40 min
Apr 20, 3:26 PM CDTSevere Thunderstorm WarningMEGFayette49 min
Apr 20, 3:38 PM CDTTornado WarningMEGFayette52 min
Apr 20, 3:43 PM CDTSevere Thunderstorm WarningMEGHaywood, Lauderdale62 min
Apr 20, 4:18 PM CDTSevere Thunderstorm WarningMEGHardeman42 min
Apr 20, 4:22 PM CDTSevere Thunderstorm WarningMEGCrockett, Gibson38 min
Apr 20, 4:44 PM CDTSevere Thunderstorm WarningMEGFayette16 min
Apr 20, 4:52 PM CDTSevere Thunderstorm WarningMEGHaywood38 min
Apr 20, 4:53 PM CDTSevere Thunderstorm WarningMEGMcNairy52 min
Apr 20, 5:00 PM CDTTornado WarningMEGCarroll, Weakley30 min
Apr 20, 5:22 PM CDTSevere Thunderstorm WarningMEGHardin38 min
Apr 20, 5:34 PM CDTTornado WarningMEGHenry26 min
Apr 20, 5:38 PM CDTSevere Thunderstorm WarningMEGCarroll37 min
Apr 20, 5:57 PM CDTSevere Thunderstorm WarningMEGTipton48 min
Apr 20, 6:37 PM CDTSevere Thunderstorm WarningMEGLauderdale23 min

Nearby

Tornado Warnings in Tennessee, 2003Every tornado warning in 2003Tornadoes 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.