Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 166, NWS Shreveport, LA

April 4, 1999Gregg County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 4, 1999, 3:55 PM CDT for Gregg County, Texas. It was in force for 35 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: Apr 4, 1999, 3:55 PM CDT (20:55 UTC)
Expired: Apr 4, 1999, 4:30 PM CDT
In force: 35 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Gregg County, TX

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 4, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.9 hours before the alert went out and 100 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 285 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 592 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 4, 2:00 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Apr 4, 2:00 PM CDT, 1 hour 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
200 PM CDT SUN APR 4 1999

ALTHOUGH A FEW THUNDERSTORMS HAVE FORMED IN THE UNSTABLE AIR OVER
CENTRAL AND EAST TEXAS THIS AFTERNOON...THESE SHOULD ONLY BE
MARGINALLY SEVERE...WITH LARGE HAIL THE MAIN THREAT THIS EVENING.
EXPECT THE NEXT MAIN EVENT TO BE MONDAY MORNING IN NORTHEAST TEXAS
AND MOVING EAST INTO LOUISIANA AND SOUTHWEST AR BY AFTERNOON. ETA AND
AVN ARE SHOWING ANOTHER COUPLED JET STREAK SCENARIO ON MONDAY...
SIMILAR TO WHAT OCCURRED ON SATURDAY OVER THE CWA.  THUS WILL GO WITH
INCREASING POPS OVER THE AREA TONIGHT AND MONDAY...WITH POPS FALLING
OFF MONDAY NIGHT AND TUESDAY FROM WEST TO EAST.  WOULD LIKE TO
MENTION SEVERE THUNDERSTORMS MAINLY ON MONDAY OVER THE NORTHERN TWO
THIRDS OF THE AREA...SIMILAR TO SPC DAY TWO OUTLOOK. TEMPS AGAIN LOOK
TOO COOL ON THE MINS...BUT NOT TOO BAD ON THE MAXES. PRELIMS
BELOW...

SHV 65/78/59/76 4631    MLU 65/78/58/75 3651
TXK 64/77/54/73 4621    TYR 64/77/57/76 4511
LFK 67/80/58/78 4411

03

In the hours before

Special weather statement, Apr 4, 9:55 AM CDT, 6 hours before

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Special weather statement, Apr 4, 9:55 AM CDT, 6 hours before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Apr 4, 11:46 AM CDT, 4 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1146 AM CDT SUN APR 04 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0503 PM    3 E ATHENS                LA   TORNADO
04/03/99   CLAIBORNE                      POSSIBLE TORNADO.  SEVERAL
                                          TRAILERS DESTROYED.  NWS
                                          SURVEY PENDING.

21

Local storm report, Apr 4, 11:46 AM CDT, 4 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1146 AM CDT SUN APR 04 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0503 PM    3 E ATHENS                LA   TORNADO
04/03/99   CLAIBORNE                      POSSIBLE TORNADO.  SEVERAL
                                          TRAILERS DESTROYED.  NWS
                                          SURVEY PENDING.

21

Local storm report, Apr 4, 3:50 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
350 PM CDT SUN APR 04 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0320 PM    BULLARD                   TX   .5 INCH HAIL ON COUNTY
04/04/99   CHEROKEE                       ROAD 118 SOUTHEAST OF
                                          BULLARD.  REPORTED BY
                                          STORM SPOTTERS.

0325 PM    WHITEHOUSE                TX   1 INCH HAIL EAST OF
04/04/99   SMITH                          DOWNTOWN WHITEHOUSE.
                                          REPORTED BY STORM SPOTTERS.

0330 PM    BOSSIER CITY              LA   .5 INCH HAIL AT AIRLINE
04/04/99   BOSSIER                        DRIVE AND I-220.  REPORTED
                                          BY OFF-DUTY NWS EMPLOYEE.

21

Local storm report, Apr 4, 3:50 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
350 PM CDT SUN APR 04 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0320 PM    BULLARD                   TX   .5 INCH HAIL ON COUNTY
04/04/99   CHEROKEE                       ROAD 118 SOUTHEAST OF
                                          BULLARD.  REPORTED BY
                                          STORM SPOTTERS.

0325 PM    WHITEHOUSE                TX   1 INCH HAIL EAST OF
04/04/99   SMITH                          DOWNTOWN WHITEHOUSE.
                                          REPORTED BY STORM SPOTTERS.

0330 PM    BOSSIER CITY              LA   .5 INCH HAIL AT AIRLINE
04/04/99   BOSSIER                        DRIVE AND I-220.  REPORTED
                                          BY OFF-DUTY NWS EMPLOYEE.

21

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 5:35 PM CDT	Tornado Warning	SHV	Cherokee	45 min
Apr 4, 5:52 PM CDT	Flash Flood Warning	SHV	Cherokee	3 hr
Apr 4, 6:43 PM CDT	Severe Thunderstorm Warning	SHV	Rusk	47 min
Apr 3, 6:02 PM CST	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Lincoln	58 min
Apr 3, 6:02 PM CST	Severe Thunderstorm Warning	SHV	Union	58 min
Apr 3, 6:58 PM CST	Severe Thunderstorm Warning	SHV	Lincoln, Union	47 min
Apr 4, 4:49 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln	36 min
Apr 4, 4:52 PM CDT	Severe Thunderstorm Warning	SHV	Caddo, De Soto	63 min
Apr 4, 6:04 PM CDT	Tornado Warning	SHV	Bossier	31 min
Apr 4, 6:15 PM CDT	Severe Thunderstorm Warning	SHV	Grant	60 min
Apr 4, 6:40 PM CDT	Severe Thunderstorm Warning	SHV	Webster	50 min
Apr 4, 4:42 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Nevada	43 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm warning 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.