Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 33, NWS Shreveport, LA

February 15, 1990De Soto Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Feb 15, 1990, 1:43 PM CST for De Soto Parish, Louisiana. It was in force for 77 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 15, 1990, 1:43 PM CST (19:43 UTC)
Expired
Feb 15, 1990, 3:00 PM CST
In force
77 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County De Soto Parish, LA

The radar

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

What was reported inside it

TimeReportWhereRemark
Feb 15, 1:57 PM CSTHail 1De Soto, LA
Feb 15, 2:25 PM CSTTornado F1De Soto, LA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 12:00Z, 7.7 hours before the alert went out and 88 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 12:00Z on 1990-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 342 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, Longview/Gregg, TX at 12:00Z on 1990-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 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
342 J/kg
Mixed-layer CIN
-171 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 151945
SVRSHV
LAC015-017-031-119-152100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
143 PM CST THU FEB 15 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CST
 
FOR PEOPLE IN THE FOLLOWING PARISHES...
 
IN NORTHWEST LOUISIANA
          ...SOUTHERN BOSSIER...SOUTHEAST CADDO...DESOTO...WEBSTER
 
AT 140 PM CST...NATIONAL WEATHER SERVICE RADARIN SHREVEPORT INDICATED
A SEVERE THUNDERSTORM FORMING 10 MILES NORTHEAST OF STONEWALL AND NEAR
LOGANSPORT. THESE STORMS ARE MOVING NORTHEAST AT 40 MILES AN HOUR.
 
 
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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Feb 15, 7:59 AM CST, 5 hours 44 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-151530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
750 AM CST THU FEB 15 1990

...SHOWERS AND THUNDERSTORMS OVER NORTHEAST AND CENTRAL LOUISIANA
   PRODUCING HEAVY RAINFALL THIS MORNING...

AT 750 AM CST...NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
SHOWERS AND THUNDERSTORMS OVER LOUISIANA...GENERALLY SOUTHEAST OF A
LINE FROM OAK GROVE...TO WINNFIELD...TO THE TOLEDO BEND RESEVOIR.  THE
STRONGEST THUNDERSTORMS WERE LOCATED JUST NORTH OF LAKE PROVIDENCE AND
BETWEEN OBERLIN AND DE RIDDER.  ALONG WITH THE HEAVY RAINFALL THESE
THUNDERSTORMS ARE CAPABLE OF PRODUCING BRIEF GUSTY WINDS AND SMALL
HAIL.  MOVEMENT WAS NORTHEAST AT 35 TO 40 MILES AN HOUR.

ELSEWHERE SCATTERED SHOWERS WERE LOCATED FROM BENTON LOUISIANA TO RUSK
TEXAS.  SHOWERS AND THUNDERSTORMS WERE ALSO LOCATED ALONG THE SABINE
RIVER FROM THE TOLEDO BEND RESEVOIR SOUTHWARD TO BEAUMONT AND LAKE
CHARLES.  MOVEMENT WAS NORTHEAST AT 35 TO 40 MILES AN HOUR.

THE THREAT OF THUNDERSTORMS WILL CONTINUE TODAY ACROSS THE ARKLATEX
AS A COLD FRONT APPROACHES FROM THE WEST...SOME THUNDERSTORMS MAY
BECOME SEVERE.

STAY TUNEHD TO TV...RADIO...OR NOAA WEATHER WEATHER RADIO FOR THE
LATEST IN WEATHER INFORMATION.
Special weather statement, Feb 15, 12:30 PM CST, 1 hour 13 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-151930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1225 PM CST THU FEB 15 1990

A TORNADO WATCH IS IN EFFECT FOR A LARGE AREA INCLUDING MUCH OF NORTH
LOUISIANA...SOUTHEAST ARKANSAS AND THE ADJACENT AREA OF MISSISSIPPI.

SEVERE STORMS WERE OVER SOUTHEAST LOUISIANA AND THE ADJACENT AERA OF
SOUTHWEST MISSISSIPPI...MOVING AWAY FROM THE ARKLATEX.

HOWEVER...A BAND OF STRONG THUNDERSTORMS WILL DEVELOP OVER SOUTH-
CENTRAL ARKANSAS ACROSSS NRTHWEST LOUISIANA AND EAST CENTRAL TEXAS
AND SPREAD EAST.  ALSO ISOLATED STRONG THUNDERSTORMS WILL DEVELOP
AHEAD OF THE BAND OVER NORTH LOUISIANA AND SOUTHEAST ARKANSAS.

THE THREAT OF SEVERE STORMS WILL INCREASE RAPIDLY BY MID AFTERNOON
INTO THE EVENING HOURS AS THE SYSTEM SPREADS EAST.
.
PERSONS IN NORTH LOUISIANA AND THE ADJACENT AREA ARE ADVISED
TO REMAIN ALERT...AS STORM WARNINGS WILL LIKLEY BE NECESSARY BY
MID AFTERNOON. THE THREAT OF SEVERE STORMS WILL INCREASE AS THIS
SYSTEM MOVES EAST.

AT 1230 PM CST...NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT INDICATED
SCATTERED SHOWERS ACROSS SOUTHWEST AND CENTRAL ARKANSAS FROM ASHDOWN AND
TEXARKANA EAST TO LITTLE ROCK AND PINE BLUFF.  ISOLATED SHOWERS AND
THUNDERSTORMS WERE OVER EAST TEXAS BETWEEN CENTER AND NACOGDOCHES.
MOVEMENT WAS EAST AND NORTHEAST AT AROUND 30 MILES AN HOUR.

STAY TUNED TO TV...RADIO AND NOAA WEATHER RADIO FOR THE zLATEST IN
WEATHER INFORMATION.
Special weather statement, Feb 15, 1:33 PM CST, 10 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-152100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
130 PM CST THU FEB 15 1990

A TORNADO WATCH IS IN EFFECT FOR A LARGE AREA INCLUDING MUCH OF NORTH
LOUISIANA...SOUTHEAST ARKANSAS AND THE ADJACENT AREA OF MISSISSIPPI.

A BAND OF STRONG THUNDERSTORMS WERE DEVELOPIING AT 130 PM CST FROM NEAR
MAGNOLIA ARKANSAS TO NEAR SHREVEPORT TO NEAR NACOGDOCHES TEXAS.

THESE STORMS WERE INCREASING IN INTENSITY AND AREAL COVERAGE WHILE
MOVING NORTH NORTHEAST AT 40 MPH. THUS FAR...PEA SIZE HAIL AND HEAVY
RAINFALL AND STRONG GUSTY WINDS HAVE OCCURRED. STORMS WILL DEVELOP
AHEAD OF THE BAND OVER NORTH LOUISIANA AND SOUTHEAST ARKANSAS.

THE THREAT OF SEVERE STORMS WILL INCREASE RAPIDLY BY MID AFTERNOON
INTO THE EVENING HOURS AS THE SYSTEM SPREADS EAST.
.
PERSONS IN NORTH LOUISIANA AND THE ADJACENT AREA ARE ADVISED
TO REMAIN ALERT...AS STORM WARNINGS WILL LIKLEY BE NECESSARY BY
MID AFTERNOON. THE THREAT OF SEVERE STORMS WILL INCREASE AS THIS
SYSTEM MOVES EAST.

THE STORMS FROM SOUTH OF SHREVEPORT TO WEST OF CENTER TEXAS WILL LIKELY
PRODUCE HIGH WIND GUSTS AND HAIL SIZE MAY INCREASE WITHIN THE NEXT
HOUR AND SEVERE STORMS MAY DEVELOP.

NEW STORMS WERE DEVELOPING AHEAD OF THE BAND FROM 20 MILES SOUTHEAST OF
EL DORADO ARKANSAS TO NEAR HOMER LOUISIANA TO 20 MILES SOUTHWEST OF
RUSTON.

THESE STORMS WILL INCREASE RAPIDLY AND MAY REACH SEVERE INTENSITY
WITHIN THE NEXT HOUR OR SO.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 1:43 PM CSTSevere Thunderstorm WarningSHVBossier, Caddo, Webster77 min
Feb 15, 2:13 PM CSTTornado WarningSHVDe Soto62 min
Feb 15, 2:15 PM CSTSevere Thunderstorm WarningSHVClaiborne60 min
Feb 15, 2:38 PM CSTTornado WarningSHVBienville, Claiborne, Lincoln67 min
Feb 15, 3:00 PM CSTTornado WarningSHVUnion75 min
Feb 15, 3:00 PM CSTTornado WarningSHVWebster75 min
Feb 15, 4:15 PM CSTSevere Thunderstorm WarningSHVMorehouse, Union60 min
Feb 15, 4:15 PM CSTSevere Thunderstorm WarningSHVLincoln60 min
Feb 15, 5:35 PM CSTSevere Thunderstorm WarningSHVMorehouse, Ouachita, Richland70 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1990Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.