Alert archive / Louisiana / Tornado Warnings in 1989

Tornado Warning 4, NWS Shreveport, LA

March 29, 1989Natchitoches Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Mar 29, 1989, 3:34 AM CST for Natchitoches Parish, Louisiana. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Mar 29, 1989, 3:34 AM CST (09:34 UTC)
Expired
Mar 29, 1989, 4:30 AM CST
In force
56 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Natchitoches Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 9.6 hours before the alert went out and 158 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, Longview/Gregg, TX at 00:00Z on 1989-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Longview/Gregg, TX at 00:00Z on 1989-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 405 square meters per square second.193958Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
596 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
405 m²/s²
0-3 km storm-relative helicity
567 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 290936
TORSHV
LAC069-291030-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
334 AM CST WED MAR 29 1989
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 AM CST
FOR PEOPLE IN THE FOLLOWING PARISH...
 
IN NORTHWEST LOUISIANA
          ...SOUTHERN HALF OF NATCHITOCHES
 
AT 330 AM CST THE NATIONAL WEATHER SERVICE RADAR IN LAKE CHARLES
INDICATED A POSSIBLE TORNADO NORTHEAST OF ANACOCO LOUISIANA
MOVING NORTHEAST NEAR 30 MPH.
 
THISSTORM WAS ALONG A SQUALL LINE THAT EXTENDED FROM NEAR PLAIN
DEALING LOUISIANA TO COUSHATTA TO NEAR FORT POLK LOUISIANA.
 
IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THE
INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR.  GET TO
A BASEMENT IF ONE IS AVAILABLE.  AVOID WINDOWS AND PROTECT YOUR
BODY FROM FLYING DEBRIS WITH CUSHIONS...BLANKETS...OR PILLOWS.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 10:40 PM CSTSevere Thunderstorm WarningSHVBossier, Caddo55 min
Mar 29, 2:59 AM CSTSevere Thunderstorm WarningSHVBossier, Caddo61 min
Mar 29, 4:10 AM CSTSevere Thunderstorm WarningSHVJackson, Lincoln, Ouachita, Winn65 min
Mar 29, 4:10 AM CSTSevere Thunderstorm WarningSHVUnion65 min
Mar 29, 2:41 PM CSTSevere Thunderstorm WarningSHVBienville64 min

Nearby

Tornado Warnings in Louisiana, 1989Every tornado warning in 1989Tornadoes in 1989

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.