Alert archive / Mississippi / Tornado Warnings in 1999

Tornado Warning 113, NWS Memphis, TN

May 5, 1999Lafayette County, Mississippi

NWS Memphis, TN issued this tornado warning at May 5, 1999, 6:13 PM CDT for Lafayette County, Mississippi. It was in force for 32 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
May 5, 1999, 6:13 PM CDT (23:13 UTC)
Expired
May 5, 1999, 6:45 PM CDT
In force
32 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Lafayette County, MS

The radar

The Memphis radar (KNQA), 115 km from the middle of the area, began a volume at 23:15 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 watch it was issued in

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

IssuedProductOfficeLasted
May 5, 5:00 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.2 hours before the alert went out and 68 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 1999-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 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 12:00Z on 1999-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897Sfc1 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
72 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
1942 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

999 
WFUS1 KMEM 052312 RRA
TORMEM
MSC071-052345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
613 PM CDT WED MAY 5 1999


THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  LAFAYETTE COUNTY IN NORTHWESTERN MISSISSIPPI

* UNTIL 645 PM CDT

* AT 611 PM CDT... DOPPLER RADAR INDICATED A TORNADO JUST NORTH OF
  OXFORD.  MOVING NORTHEAST AT 45 MPH.

*   .

.A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 10:25 AM CDTSevere Thunderstorm WarningMEGCalhoun, Yalobusha50 min
May 5, 5:25 PM CDTSevere Thunderstorm WarningMEGDeSoto, Tunica45 min
May 5, 5:28 PM CDTSevere Thunderstorm WarningMEGTallahatchie47 min
May 5, 5:53 PM CDTTornado WarningMEGPanola, Tallahatchie32 min
May 5, 6:02 PM CDTTornado WarningMEGDeSoto33 min
May 5, 6:05 PM CDTSevere Thunderstorm WarningMEGYalobusha35 min
May 5, 6:39 PM CDTTornado WarningMEGMarshall36 min
May 5, 6:44 PM CDTSevere Thunderstorm WarningMEGLafayette46 min
May 5, 6:45 PM CDTSevere Thunderstorm WarningMEGBenton50 min

Nearby

Tornado Warnings in Mississippi, 1999Every tornado warning in 1999Tornadoes in 1999

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.